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Free, in-depth guides on the financial models and strategies behind Summitward. Evidence-based, no-fluff, with interactive calculators in every major guide.
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All calculatorsStrategy8 min readCalculator
Money Path: The Interactive Personal Finance Flowchart for 2026
Answer 7 questions and see where you are on the 7-camp climb from budget to summit. A modern, personalized take on the r/personalfinance flowchart with 2026 IRS limits and Summitward tool deep-links.
Concept20 min read
The Complete Guide to Financial Independence (FIRE Movement 2026)
Everything you need to know about FIRE: how to calculate your number, types of FIRE, the five pillars of financial independence, and how to build a plan that actually works.
Concept18 min readCalculator
How to Start Investing: A Beginner's Guide to Personal Finance and Index Funds
Your first 90 days as an investor. Prioritize spending, open the right account, pick two index funds, and let compounding work. Evidence-based, no jargon, with an interactive compound interest calculator.
Concept14 min read
How to Track Your Net Worth (Step-by-Step Guide)
Net worth is the single most important measure of financial health. Learn what to include, how to calculate it, which tracking method fits your style, and how to turn raw numbers into a plan for financial independence.
Concept12 min readCalculator
How to Determine Your Financial Independence Number
Your FI number is the portfolio size that lets you stop working. Learn how to calculate it from your spending and safe withdrawal rate, and explore Lean, Comfortable, and Fat FI tiers.
Concept15 min readCalculator
The Engineer's Guide to Systematic Investing
Most people expect investing to be about having an opinion. Systematic investing is about having a process. The evidence, the levels ladder, and the friction calculator that quantifies how small mistakes compound.
Browse by topic
Getting Started
Foundations of personal finance: net worth, FI numbers, debt payoff, and the first few moves every new investor should make.
- School Stock Market Games Reward the Luckiest Bet
- Fidelity Cash Management Account: Can SPAXX Replace Your Checking Account?
- Schwab Bank Sweep vs. SWVXX: What Idle Cash Costs You at Schwab
Retirement Planning
Safe withdrawal rates, Monte Carlo simulation, Roth conversions, sequence-of-returns risk, and Social Security timing for the years when your portfolio replaces your paycheck.
- Roth Conversion Calculator: How Much to Convert Each Year
- RMD Calculator: Your Required Minimum Distribution and What It Costs in Tax
- Which Account Should Pay? Spend Taxable Dollars, Keep Roth and HSA Dollars Invested
Investing & Portfolio
Asset allocation, factor investing, global diversification, and the research behind how to actually build a portfolio that works over decades.
- VTSAX vs FSKAX: Should You Switch to the Cheaper Index Fund?
- School Stock Market Games Reward the Luckiest Bet
- Fidelity Cash Management Account: Can SPAXX Replace Your Checking Account?
Tax Strategy
Roth vs. Traditional, tax-loss harvesting, the tax-advantaged trifecta, HSA investing, and how to pay less tax across a full lifetime of earning and spending.
- Roth Conversion Calculator: How Much to Convert Each Year
- VTSAX vs FSKAX: Should You Switch to the Cheaper Index Fund?
- RMD Calculator: Your Required Minimum Distribution and What It Costs in Tax
Equity Compensation
RSU taxation, withholding elections, concentration risk, and how to think about tech-industry equity comp alongside the rest of your financial picture.
- Borrow or Sell for the Down Payment? Box Spreads, Pledged-Asset Lines and the Vest Bridge
- One Employer, Four Exposures: Salary, Unvested Equity, Vested Stock, and Your Home
- Your Company Stock Has to Beat the Market by 3 Points a Year to Be Worth Holding
Home & Big Purchases
Rent-vs-buy math, the real cost of owning a house or a car, down-payment strategy, and mortgage points: the decisions that shape your cash flow for decades.
- Borrow or Sell for the Down Payment? Box Spreads, Pledged-Asset Lines and the Vest Bridge
- The Beach Rental That Cut Taxes and Lost Money: A 15-Year Case Study
- Do Higher Interest Rates Cause Inflation? What the Evidence Says About the Fed's September Hike
Risk & Protection
Emergency funds, where to park cash, inflation hedges, life insurance, and the other defensive building blocks that protect the wealth you've worked to build.
- Schwab Bank Sweep vs. SWVXX: What Idle Cash Costs You at Schwab
- SNSXX vs. SWVXX: Which Schwab Money Market Fund Keeps More After Tax?
- Volatility Targeting: Does Scaling Risk Improve Returns?
Short videos
More on YouTubePure Randomness Drew This "Valuation Predicts Returns" Chart
Read the guideThe 4% Rule Isn't a Rule
Read the guideMost Stocks Lose to T-Bills. The Market Still Wins.
Read the guideBrowse all 294 guides
StrategyRetirement Planning14 min readCalculator
Roth Conversion Calculator: How Much to Convert Each Year
For one modeled couple with $1.5M pre-tax, converting to the top of the 12% bracket before RMDs beat filling 22% or 24%. Model your own conversions to age 95.
StrategyInvesting & Portfolio13 min readCalculator
VTSAX vs FSKAX: Should You Switch to the Cheaper Index Fund?
Should you sell VTSAX to buy FSKAX? Their 10-year returns are 0.01 points apart. Why switching appreciated shares rarely pays, and when a fund switch does.
StrategyRetirement Planning17 min readCalculator
RMD Calculator: Your Required Minimum Distribution and What It Costs in Tax
Calculate your 2026 RMD, then see what it costs: the tax bracket, the Social Security it makes taxable, Medicare IRMAA, and the jump after a spouse dies.
ConceptGetting Started13 min readCalculator
School Stock Market Games Reward the Luckiest Bet
In our 30-team, 13-week simulated class contest, leveraged one-stock teams won 69% of games. What school stock market games reward, and what to teach kids.
StrategyGetting Started12 min readCalculator
Fidelity Cash Management Account: Can SPAXX Replace Your Checking Account?
Interest checking averaged 0.07% in Sep 2026; SPAXX in a Fidelity CMA yielded 3.49% on Oct 6. It trailed 3-month bills by 0.47% over the past year.
StrategyTax Strategy10 min readCalculator
SGOV vs. T-Bills: Is the 0.09% Fee Worth It Over Buying Bills Yourself?
A modeled 4-week T-bill roll returned 3.87% in the year to Aug 2026 vs 3.78% for SGOV, about its fee: ~$45 a year on $50k before tax. When bills win.
StrategyTax Strategy9 min readCalculator
SWVXX vs. SGOV: Should Schwab Cash Go in a Money Fund or a T-Bill ETF?
SGOV returned 3.78% in the year to Aug 2026 vs 3.68% for SWVXX, and 95% of its income is state-exempt. For one modeled CA saver, ~$200/yr more on $50k.
StrategyGetting Started9 min readCalculator
Schwab Bank Sweep vs. SWVXX: What Idle Cash Costs You at Schwab
Schwab listed uninvested brokerage cash at 0.01% APY on Oct 7, 2026; its money funds yielded 3.55-3.70%. At those rates, $50k in the sweep gave up ~$1,800/yr.
StrategyTax Strategy10 min readCalculator
SNSXX vs. SWVXX: Which Schwab Money Market Fund Keeps More After Tax?
SWVXX out-yielded SNSXX every month for a year, but SNSXX was 99.99% state-exempt. For one modeled California saver, SNSXX kept $90-$130 more a year on $50k.
StrategyTax Strategy18 min readCalculator
Which Account Should Pay? Spend Taxable Dollars, Keep Roth and HSA Dollars Invested
For one modeled $10,000 at 7% over 30 years, a tax-free account ends 19% ahead of a taxable index fund. When to spend taxable money first, and four cases that flip it.
ConceptInvesting & Portfolio17 min readCalculator
Why Stocks Can Rise When Interest Rates Rise
Higher rates lower present value, all else equal. Yet from 1963 to 2025, U.S. stocks rose in 24 of the 33 years the 10-year yield rose. Why both are true.
StrategyInvesting & Portfolio22 min readCalculator
Volatility Targeting: Does Scaling Risk Improve Returns?
On US stocks, 1927-2026, a 12% volatility target lifted the Sharpe ratio from 0.46 to 0.56 but caught a third of the 2020 rebound. Research, risks, simulator.
StrategyHome & Big Purchases11 min readCalculator
Borrow or Sell for the Down Payment? Box Spreads, Pledged-Asset Lines and the Vest Bridge
For one modeled $100,000, three-month bridge, a box spread cost about $700 after tax; selling appreciated shares cost $7,400 or more. When borrowing wins.
ConceptInvesting & Portfolio17 min readCalculator
Who Moves the Stock Market? Return Chasers, 60/40 Funds, and Inelastic Prices
In one market simulation, return chasers earned about half a 60/40-style fund's Sharpe ratio and momentum traders beat both. Who moves prices, and what to do.
StrategyGetting Started17 min readCalculator
0% APR Arbitrage: What Borrowing at 0% to Buy T-Bills Pays After Fees and Tax
In our model, $20,000 moved at the 4.3% average transfer fee and parked in T-bills for 12 months loses about $220. A no-fee purchase promo nets about $640.
ConceptInvesting & Portfolio24 min read
Cliff Asness's 10 Investing Pet Peeves, Revisited: What the Evidence Says
Cliff Asness's 2014 list of investing pet peeves, graded against the research since. All ten hold up in substance; four need caveats, from HFT to bond funds.
ConceptInvesting & Portfolio16 min readCalculator
Do T-Bills Beat Inflation? Barely Before Tax, Usually Not After
From 1928 to 2025, T-bills beat inflation by 0.33% a year. A flat 10% federal tax on the interest erased that. Decades, rolling windows, and when cash fits.
ConceptInvesting & Portfolio18 min readCalculator
ROIC Explained: What Return on Invested Capital Says About a Business and Its Stock
ROIC shows whether a business earns more than its capital costs. What factor research says about it, and why MOAT showed no profitability tilt in 2012-2026.
ConceptInvesting & Portfolio16 min read
Beyond Fama-French: q-Factors, AQR's Factors, and Why Your Alpha Depends on the Model
Over 2014-2025, VBR's alpha was -4.7%/yr under CAPM and -0.1% under the q5 model. How Fama-French, q-factor and AQR factor models differ, and which to use.
ConceptInvesting & Portfolio16 min read
Cheap for a Reason: Value Traps, the Value Premium, and Why Bad Companies Can Be Good Investments
From 1963 to 2026, the cheapest, least profitable US stocks beat the market as a group. Why value traps sink stock pickers but rarely diversified value funds.
ConceptInvesting & Portfolio16 min read
Quality Minus Junk (QMJ): What the Quality Factor Adds to Small-Cap Value
US QMJ beat a four-factor model by 0.60%/mo in 1957-2016, then went flat. We regressed AVUV, DFSV, IWN and QUAL on it to see which funds already hold quality.
StrategyInvesting & Portfolio21 min read
Minimum Volatility and Betting Against Beta: What 15 Years of USMV Show
Nov 2011-Aug 2026: a 78% stock, 22% T-bill mix set to USMV's volatility matched its return and drawdown. The low-beta anomaly, BAB, and when min vol fits.
StrategyInvesting & Portfolio11 min read
Small-Cap Value vs. Small-Cap Growth: 99 Years of Data
Fama-French data, 1927-2025: small value 14.2% a year, small growth 8.8%. Since 2004 index funds tied. The tiny growth stocks behind most of the gap.
ConceptTax Strategy7 min read
What Percent of SGOV Is State Tax Exempt? 2025 Figures for SGOV, VBIL, USFR, SPAXX and More
SGOV was 95.14% state-tax-exempt for 2025. Issuer figures for 15 cash funds, and why SPAXX's 50.90% counts for nothing in California, New York and Connecticut.
ConceptInvesting & Portfolio15 min read
Loans Create Deposits: How Banks Create Money, and Why They Still Compete for Your Deposits
When a bank makes a loan, it creates a brand-new deposit. Why banks still fight for your deposits, what limits lending, and what SVB's run showed investors.
StrategyHome & Big Purchases14 min read
The Beach Rental That Cut Taxes and Lost Money: A 15-Year Case Study
A real beach rental held 2005 to 2020, with modeled costs: the sale cut one year's tax by $44,000, and the owners still finished $148,000 behind in cash.
ConceptTax Strategy15 min read
Tax Losses Can Be Valuable. Losing Money Isn't.
For one modeled investor in the 37% bracket with no gains, a $100,000 loss cut taxes by $18,725 in present value. Why a write-off consoles less than it seems.
ConceptInvesting & Portfolio20 min read
Do Higher Interest Rates Cause Inflation? What the Evidence Says About the Fed's September Hike
Ackman says the Fed's September hike will raise inflation. Sixty years of identified-shock evidence says tightening lowers it. The live exception is rents.
ConceptInvesting & Portfolio14 min readCalculator
The Ten-Year Rose 392 Basis Points Since 2021. The Real Yield Rose 395.
On September 23, 2026 the ten-year Treasury yields 5.11% because the real yield is 2.76%, its highest since 2008. What that composition means for stocks.
MethodologyHome & Big Purchases17 min readCalculator
Is a 7% Mortgage High? What Fifty-Five Years of Data Can and Cannot Tell You
On September 17, 2026, a 6.95% mortgage sat at the 45.5th percentile of Freddie Mac's weekly record since 1971. Start the sample in 2000 and it is the 91st.
ConceptInvesting & Portfolio23 min readCalculator
Who Pays for the Probability?
Across 1.6 million Polymarket accounts, 0.1% captured 67% of profits. What a prediction market price is worth, who pays to produce it, and who bears the cost.
MethodologyInvesting & Portfolio19 min readCalculator
Inflation Beta Is Not One Number
Stocks' inflation beta is an insignificant -1.3 against headline CPI and -5.6 against core. What the number measures, why it moves, and how to read one.
StrategyInvesting & Portfolio17 min readCalculator
How Often Should You Invest? Daily, Weekly, or Monthly
Daily fractional investing spreads a paycheck you already received. For one monthly payee that delay costs about $142 per $100k, plus 21x the tax lots.
ConceptInvesting & Portfolio14 min readCalculator
Why Macroeconomic Forecasts Are Not an Investment Strategy
Across 63 countries, forecasters saw 5 of 153 recessions a year ahead. And US stocks beat cash two years in three, so a timer's hurdle starts near 70%.
StrategyRisk & Protection16 min readCalculator
Umbrella Insurance for High Earners: Why Net Worth Is the Wrong Number
Sizing umbrella coverage to net worth counts a protected 401(k) and ignores wages most states let a creditor garnish for years. What high earners should buy.
MethodologyInvesting & Portfolio18 min readCalculator
Which Inflation Are You Hedging?
AQR's own data gives a TIPS fund an inflation-news correlation of +0.05 and breakevens +0.61. A critical read of Inflation Redux, and what hedges what.
ConceptTax Strategy16 min readCalculator
Are Property Taxes Regressive? Why the Denominator Changes the Answer
A viral chart says the median family pays 29x more property tax than the top 0.1%, relative to net worth. What that ratio measures, and what it misses.
ConceptTax Strategy22 min readCalculator
What a $16,364 Rental Write-Off Is Actually Worth
For one modeled $600,000 rental owned by a couple earning $200,000, ten years of depreciation totaled $156,136 and cut their federal tax by $0.
ConceptGetting Started14 min read
Good Heuristics, Bad Theorems
We graded thirteen claims from six popular finance writers against primary sources. One fails on its own arithmetic. Three criticisms of them also failed.
StrategyHome & Big Purchases11 min readCalculator
A 9% Mortgage Does Not Lose to 10% Stocks
On US stock returns 1928 to 2025, a guaranteed 9% beat the S&P 500 in 44% of ten-year windows and 4% of thirty-year ones. The threshold sits far below 10%.
ConceptInvesting & Portfolio11 min read
Investing at All-Time Highs: Better for Five Years, Worse for Twenty
Barry Ritholtz calls the data unequivocal. Vanguard's own numbers show higher returns after all-time highs at 1, 3 and 5 years, and lower at 10 and 20.
ConceptRetirement Planning12 min readCalculator
What Discount Rate Belongs on Social Security?
Social Security is an inflation-indexed lifetime annuity. On SSA's factors, waiting to 70 beats 62 only below 2.3% real for a man, 3.4% for a woman. TIPS pay 2.9%.
ConceptRetirement Planning16 min read
Fact-Checking Mr. Money Mustache
We checked nine claims against IRS rules, SSA formulas and the original research. Most hold up. The April 2026 Social Security post is the one that does not.
StrategyTax Strategy13 min readCalculator
What $121,281 of Harvested Losses Was Worth
Mr. Money Mustache reports $121,281 of losses harvested and $48,000 saved. The $3,000 annual limit caps how much of that could reach ordinary income at 40%.
StrategyGetting Started17 min readCalculator
What Wealthfront's 9.8% Return Actually Measures
Wealthfront reports 9.80% a year since 2012 at risk score 9. Its own page also reports 4.80% at the most conservative score, which is what the headline measures.
ConceptRetirement Planning11 min read
Is Locking In Today's TIPS Yields Market Timing?
The cost of a 30-year inflation-adjusted income floor fell 42% since 2021. Acting on a price you can see is a different decision from forecasting one.
ConceptInvesting & Portfolio13 min readCalculator
Is VT the Most Diversified ETF?
VT holds about 10,000 stocks. From 2010 to 2026 its realized volatility ran within 0.2 points of a 500-stock S&P 500 fund. Diversified against which risk?
StrategyGetting Started13 min readCalculator
The Latte Factor, Recalculated
The million-dollar coffee figures assume 10% to 12% returns. Here is the real-return math, and the option the argument skips: brewing the same cup at home.
ConceptInvesting & Portfolio15 min read
Morningstar Bought CRSP: Did VTI Change?
Morningstar bought CRSP; VTI and VTSAX were renamed July 29, 2026. What changed, what didn't, and why Morningstar now rates a fund tracking its own index.
StrategyInvesting & Portfolio12 min readCalculator
QQQ vs. QQQM: Which Is Better for Long-Term Investors in 2026?
QQQM costs 0.15% to QQQ's 0.18% and tracked closer through Aug 2026. Why the Dec 2025 conversion makes older comparisons stale, and when not to switch.
ConceptInvesting & Portfolio11 min read
TQQQ vs. QQQ: How 3x Daily Leverage Compounds Over Time
TQQQ seeks 3x the Nasdaq-100 for one day, then resets. In 2022 it fell 79.03% to QQQ's 32.51%. What daily reset does over longer periods, per the prospectus.
StrategyTax Strategy8 min readCalculator
VUSXX vs. VMFXX: Which Vanguard Money Market Fund Keeps More After State Tax?
VUSXX was 100% Treasury income for 2025 and VMFXX 66.61%; both pass the CA/CT/NY test. For one modeled California saver the gap was about $80 a year on $50k.
StrategyTax Strategy9 min readCalculator
FDLXX vs. SPAXX: Which Fidelity Money Market Fund Keeps More After State Tax?
SPAXX gets no state-tax break in CA, CT or NY; FDLXX was 98.67% Treasury income and passes. For one modeled California saver that was about $173 a year on $50k.
StrategyRisk & Protection10 min readCalculator
SGOV vs. HYSA: Is a Treasury ETF Better Than a High-Yield Savings Account?
SGOV yielded 3.63% in Sept 2026 with 95% of income state-tax exempt. For one modeled California saver a bank needs about 4.18% APY to match it after tax.
StrategyRisk & Protection9 min readCalculator
SPAXX vs. HYSA: Should Your Cash Leave Fidelity for a Bank?
SPAXX failed the CA/CT/NY test, so its income is fully state-taxable there, like a bank's. On one modeled $50k the gap ran about $20 a year either way.
StrategyTax Strategy9 min readCalculator
SGOV vs. VBIL: What Vanguard's Cheaper T-Bill ETF Is Worth
VBIL charges 0.06% to SGOV's 0.09% and was 100% Treasury income to SGOV's 95.14%. For one modeled California holder that gap is worth about $36 a year on $100k.
ConceptInvesting & Portfolio22 min readCalculator
What It Actually Costs to Launch an ETF
Published white-label pricing puts an ETF launch near $50k and $200k+ a year to run. The marginal platform fee also sets a floor below which no fee breaks even.
ConceptTax Strategy21 min readCalculator
Should Charitable Donations Be Tax Deductible? The Case for Ending the Deduction
The US charitable deduction costs about $69B a year and 63% of its 2019 benefit went to the top 1%. What the research says, and why I would end it anyway.
ConceptHome & Big Purchases16 min readCalculator
Will the AI Boom Push Up Mortgage Rates?
A podcast pegs AI borrowing at $5T through 2029 and rates 250 bp higher. At a published deficit elasticity the same borrowing is worth about 0.7 pp on a mortgage.
MethodologyTax Strategy24 min readCalculator
We Open-Sourced a TALS Simulator: Why More Harvested Losses Don't Mean More Wealth
In one synthetic zero-alpha simulation, a 250/150 book harvested 7.2x the losses of long-only and ended $427k behind it in median after-tax wealth. Here is why.
StrategyTax Strategy13 min readCalculator
SPAXX vs. SGOV: Which Is Better for Cash at Fidelity?
SPAXX pays your bills automatically; SGOV yielded more after tax at Aug 2026 rates, up to ~$484/yr on a modeled $100k in California. Which cash goes where?
StrategyInvesting & Portfolio12 min readCalculator
Best Fidelity Core Position: SPAXX vs. FZFXX vs. FCASH vs. FDIC Sweep
On Aug 31, 2026, SPAXX paid 3.33% while Fidelity's FDIC sweep paid 1.84% and FCASH 1.82%. Which core position to pick, by account type and state tax.
StrategyGetting Started14 min readCalculator
Who Teaches You About Money? Duke, Edward Jones, and the Case for Independent Financial Education
Edward Jones' logo is on Coach K Court. Its disclosures call revenue sharing a potential conflict of interest. How to read a sponsored financial education deal.
ConceptInvesting & Portfolio21 min readCalculator
How Much of a Ten-Year Treasury Yield Is Risk Compensation?
The NY Fed split a 4.77% ten-year in Aug 2026 into 3.98% expected short rates and 0.79% term premium. What the 0.79 pays for, and what it costs a homebuyer.
StrategyInvesting & Portfolio17 min read
Does Trend Following Work on Crypto? The Evidence, the Traps, and How to Test It Yourself
In one 2017 to 2025 test, a crypto trend rule cut the deepest loss from 84% to 15%, while plain volatility targeting captured most of the improvement.
StrategyGetting Started18 min readCalculator
How Much Should a Fantasy Football League Cost?
Across 56,000 leagues on one escrow platform in 2023, the most common entry fee was $50. What that does and does not tell you about your league's buy-in.
ConceptInvesting & Portfolio22 min readCalculator
What a 60/40 Portfolio Really Owns
Two portfolios can both be 60/40 and hold very different risk. What sits inside the 40, why 2008 and 2022 ranked it differently, and who gains from the label.
ConceptGetting Started22 min readCalculator
Personal Finance Gurus vs. Economists: When Simple Rules Beat Textbook Models
A Yale professor checked 50 popular finance books against economic models. One scorecard row agrees outright, and one benchmark row contradicts its own source.
StrategyTax Strategy19 min readCalculator
Where to Hold International Stocks: Taxable or Tax-Advantaged?
Only 58.5% of VXUS's 2025 dividends were qualified, but sheltering it forfeits the foreign tax credit. How to decide at the household level, with a calculator.
StrategyRisk & Protection21 min readCalculator
Tail-Risk Hedging: Puts, CAOS, HIDE, and the Managed-Futures Alternative
Rolling put protection returned 7.7% vs 10.8% for the S&P 500 from July 1986 to May 2025. What tail hedges cost, which tail each covers, what to use instead.
StrategyInvesting & Portfolio23 min readCalculator
Alpha Architect ETFs: QVAL, QMOM, and the Case for Concentrated Factors
How QVAL, QMOM, IVAL and IMOM stack up against Avantis, DFA and Vanguard, and what six-factor regressions show each fund's tilt actually delivered.
StrategyTax Strategy13 min readCalculator
BOXX After IRS Notice 2026-62: What Changed and Who Should Still Buy
The IRS named the box-spread ETF tax mechanism and warned rules could be retroactive. What changed for BOXX holders, and when Treasury bills win instead.
StrategyTax Strategy26 min readCalculator
BOXX ETF Explained: Box Spreads, Tax Advantages, and the Tradeoffs
BOXX turns T-bill interest into deferred capital gains. The federal case is real, state taxes cut the other way, and the Section 1258 question is unresolved.
StrategyInvesting & Portfolio24 min readCalculator
Box Spread Loans: What They Save Depends on the Rate You're Escaping
A short SPX box spread borrows near wholesale rates. Against double-digit retail margin the gap is over five points. Against a cheap broker's margin, tiny.
StrategyEquity Compensation17 min readCalculator
One Employer, Four Exposures: Salary, Unvested Equity, Vested Stock, and Your Home
Four household exposures can move with one employer: salary, unvested grants, vested stock, and a mortgaged home. Only one of the four has a market price.
StrategyInvesting & Portfolio18 min readCalculator
Boomer Candy: The High-Yield Investments That Turn Your Portfolio Into an Options Trade
Goldman bought both sides in five months. What buffered and covered-call ETFs actually sell, and why an advertised buffer isn't what a mid-period buyer gets.
ConceptRisk & Protection21 min readCalculator
Sports Betting vs. Investing: Where the Expected Return Comes From
Sportsbooks held 10.2% of the $166.94B wagered in 2025. What the 2026 household research says about where betting money comes from, and where it belongs.
StrategyRetirement Planning15 min read
How Much of Your Retirement Should Be a Guaranteed Income Floor?
Your funded ratio decides. For one modeled 65-year-old, a partial floor helped above 0.65x funded and hurt below it. How to size a guaranteed income floor.
StrategyTax Strategy18 min readCalculator
Your ZIP Code Is Part of Your Financial Plan: How State Taxes Affect Retirement
For one modeled couple, leaving New York five years earlier was worth $279,000 more than moving at retirement. Why timing matters more than the headline rate.
ConceptInvesting & Portfolio18 min readCalculator
The Rise of Avantis: How Two DFA Veterans Built a $150 Billion Factor Shop in Seven Years
Avantis went from launch to $150 billion in under seven years, and AVUV overtook VBR as the largest small-cap value ETF. What actually drove the rise.
ConceptInvesting & Portfolio16 min readCalculator
Yes, an Unrealized Loss Is Still a Loss
The S&P 500 reclaimed its 1972 real high in 1984. A retiree drawing 4% was at 39 cents on the dollar and never recovered, without ever panic selling.
MethodologyInvesting & Portfolio21 min readCalculator
Dividend Growth vs. Small-Cap Value: What the Factor Regressions Show
We regressed VIG, SCHD, VYM, NOBL and AVUV on the five Fama-French factors. Dividend growth's value loading is 0.002. That changes the comparison.
ConceptInvesting & Portfolio18 min readCalculator
Where 155 Years of Stock Returns Actually Came From
We ran the decomposition on Shiller's 1871-2026 data. Dividends supplied 4.3% of the 7.1% real return, earnings growth 2.1%, and multiples 0.6%.
StrategyTax Strategy16 min readCalculator
What If You Just Paid the 10% Early-Withdrawal Penalty?
Skip the Rule of 55 and the Roth ladder. Eat the full 10% penalty at 45. With a bracket drop the traditional 401(k) still wins from year one.
StrategyInvesting & Portfolio22 min readCalculator
Structured Notes: Who Is on the Other Side of Your 15% Coupon?
Citi valued its own 15.25% NVIDIA note at $987.60 per $1,000. We rebuilt that number from the prospectus, and found the note keeps a quarter of the gain.
StrategyGetting Started17 min readCalculator
How to Write a Household Financial Plan (One Page, Then the Appendices)
Only 36% of Americans have a written plan, and the survey behind that stat measured confidence. What the evidence supports, plus a builder for your one page.
ConceptInvesting & Portfolio20 min readCalculator
The ABCs of Systematic and Factor Investing
Alpha to zoo: a plain-English A-to-Z of factor investing. Why 65% of 452 anomalies failed replication, and which exposures survive costs, taxes, and you.
ConceptTax Strategy16 min readCalculator
There Are Only Four Things You Can Do With a Capital Gain
Pay it, give it away, exclude it, or defer it. Discounted at 5%, waiting 20 years turns a 23.8% tax bill into about 9% today. Only two of the four reach zero.
StrategyRetirement Planning16 min readCalculator
The ACA Subsidy Cliff Is Back: Health Insurance for Early Retirees in 2026
The enhanced premium tax credits expired and the 400% poverty-line cliff returned. One dollar over $62,600 single or $84,600 married can cost more than $8,000. Calculate your own edge.
StrategyGetting Started18 min readCalculator
Should Married Couples Have Joint Accounts?
Marital property, legal title, who can withdraw today, and who inherits are four different questions. What the law says, what the pooling research actually found, and a calculator for splitting the bills.
ConceptInvesting & Portfolio20 min readCalculator
Did Stocks Double During the Civil War? The Index Rose 129%. Purchasing Power Rose 24%.
Northern share prices rose 129% while consumer prices rose 85%. Vietnam repeated it: +81% nominal, +0.9% real. What war-return tables leave out, and what to do instead.
ConceptInvesting & Portfolio20 min readCalculator
Korea Listed 2x Samsung ETFs in May. Ten Weeks Later They Were Down 39% While Samsung Fell 12%.
South Korea's 2026 crash shows three ways to lose while being right about a business: a concentrated index, a daily-reset product, and a margin call one day before the rebound.
ConceptInvesting & Portfolio24 min readCalculator
Perpetual Futures: At 10x on Bitcoin, More Than a Third of Correct Calls Get Liquidated First
Funding is quoted on notional and paid out of your margin: 0.01% per 8 hours is 109.5% a year at 10x. What that costs, and why direction is not enough.
MethodologyInvesting & Portfolio14 min readCalculator
The AI Hedge Fund Everyone Was Copying Last Filed a Book That Was 62% Puts
Situational Awareness's last 13F reported $13.7B, and 62% of it was put options. What the form leaves out, and what the copycat research actually finds.
StrategyEquity Compensation16 min readCalculator
Your Company Stock Has to Beat the Market by 3 Points a Year to Be Worth Holding
On a low-basis $1M position, deferring tax is worth about 1.2 points a year while the added volatility costs 4.1. That gap is what your stock must beat.
ConceptInvesting & Portfolio17 min readCalculator
Is the S&P 500 a Momentum Trade? I Measured It.
Momentum funds load +0.42 on the momentum factor. Measured over the same window, the S&P 500 loads zero. What 425 rolling windows say about the claim.
StrategyHome & Big Purchases18 min readCalculator
BOAT: Break Out Another Thousand, and the Number That Tells You If It's Worth It
Run five boats through the full cost math and the loan payment is 27% to 31% of the total on conventional financing. Plus the break-even, in days per year.
ConceptInvesting & Portfolio22 min readCalculator
HEDGEFUNDIE's Excellent Adventure: The Whole Strategy Is a Bet on One Number
TMF has compounded at -6.34% a year since 2009. The 55/45 UPRO/TMF strategy works until stock-bond correlation crosses about +0.4, and nobody can tell you in advance where that line sits.
ConceptInvesting & Portfolio19 min readCalculator
Austria's 100-Year Bond: What Actually Happens If You Hold It to Maturity
The famous 75% loss is measured from the 2020 peak. What the math says about duration, convexity, and actually holding a century bond through to 2120.
ConceptRisk & Protection21 min read
Give Your Children a Floor, Not a Throne: A Better Way to Think About Generational Wealth
When researchers randomized wealth to parents, their children's skills were unaffected. Inheritance does cut paid work, by 4.4 points at the retirement margin. What the evidence says to leave.
ConceptTax Strategy14 min readCalculator
What "Tax Alpha" Actually Means, and Why 1% a Year Is the Wrong Number
The headline 1.08% is before costs and falls to 0.82% with the wash-sale rule. The same harvested loss can be worth $238 or $12,630 depending only on the exit.
ConceptInvesting & Portfolio22 min readCalculator
The Black-Scholes Equation: What It Does, What It Assumes, and Where It Breaks
The model removes forecasting from option pricing, which is why expected return vanishes from it. How it works, what implied volatility means, and where it fails.
ConceptInvesting & Portfolio20 min readCalculator
A 1,000% Upside and a 100% Downside Does Not Make It a Good Bet
The viral claim needs a 9.1% win rate just to break even. What a real option must do to pay, what retail traders actually earn, and when options make sense.
ConceptGetting Started22 min readCalculator
Ten Investing Numbers You Should Not Memorize
One is genuinely useful. Two fail arithmetic you can check on a phone. Two have no source at all. We graded all ten viral numbers against the research.
ConceptInvesting & Portfolio16 min readCalculator
Every Portfolio Is Long/Short, Even If You Never Short a Stock
Your weights and the benchmark's both sum to 100%, so every overweight is financed by an underweight. What that means, what Active Share can and cannot tell you.
ConceptInvesting & Portfolio17 min readCalculator
Profits Without Cash? What Cash-Based Operating Profitability Really Tells Investors
A famous 2016 paper shows the profit backed by cash predicted stock returns and the accrual part did not. What that means for DIY investors, Avantis, and DFA.
ConceptInvesting & Portfolio19 min readCalculator
Five Stocks Are Not Safer Than an Index Fund, Even If You Know Them
Just 4% of stocks created all US market wealth above T-bills. Why five researched picks widen outcomes instead of shrinking risk, and when concentration works.
ConceptGetting Started17 min readCalculator
The $408,000 Paycheck-to-Paycheck Illusion
The viral budget saves $46,000, pays $90,000 tuition, and calls $1 left over broke. A line-by-line audit of where the $408k figure comes from.
ConceptTax Strategy18 min readCalculator
403(b) vs. 457(b) vs. 401(k): Contribution Limits, Hidden Risks, and When to Use Both
There are two different 457(b)s, and one is an unsecured promise. The $49,000 stacking rule, the early-retirement bridge, and the creditor risk nobody mentions.
ConceptHome & Big Purchases17 min readCalculator
Total Interest Is Not the Cost of a Loan
The $697,544 mortgage number that tells you almost nothing. Discounted at the loan's own rate, every term's payments are worth exactly what you borrowed.
ConceptGetting Started16 min readCalculator
Your Credit Score Is Not Your Financial Health Score
Income explains about 8% of credit score variation. What the score actually measures, why a higher score can sit on a weaker balance sheet, and when to stop optimizing.
ConceptGetting Started18 min read
Bogleheads Bingo: Why Simple Investing Creates the Same Hard Questions Forever
The portfolio may be passive. The investor never is. Every square of the meme, annotated: what each debate really asks, and which ones actually matter.
StrategyTax Strategy19 min readCalculator
Should H-1B Visa Holders Contribute to a 401(k)? A Cross-Border Decision Framework
Your visa horizon is not your investment horizon. When the 401(k) wins for temporary US residents, what happens if you leave, and a deep dive for India returnees.
StrategyGetting Started17 min readCalculator
Return on Hassle: When Investment Optimization Stops Being Worth It
A 20bp optimization that costs $2,000 a year in effort needs $1M of assets just to break even. A framework for when the next optimization is not worth it.
StrategyInvesting & Portfolio18 min readCalculator
The Merton Share: Can a Formula Beat 100% Stocks, or Just Size Risk Better?
28% of finance-trained subjects went bust betting on a 60% coin. The Merton share sizes risk with a formula. Does the dynamic version beat 100% stocks?
StrategyInvesting & Portfolio16 min readCalculator
Are Collectibles Really Investments? The Math Behind Cards, Whiskey, Wine, and Antiques
A $4,800 whiskey bottle has to sell for $11,109 in 10 years just to match a 7% portfolio. What the research says about cards, wine, and art as investments.
ConceptInvesting & Portfolio18 min readCalculator
Missing the Market's Best Days: What the Famous Chart Leaves Out
Skip each decade's 10 best days since 1930 and 19,975% becomes 45%. Skip the 10 worst too and you beat buy-and-hold. Why that chart proves less than it seems.
StrategyGetting Started16 min readCalculator
How Much Should You Spend on Vacation? A Percent-of-Income Anchor and Three Tests
Start near 3-5% of take-home pay, then test it on cash flow, liquidity and FI impact. At a 4% withdrawal rate, $1,000 a year of travel needs $25,000 invested.
ConceptInvesting & Portfolio18 min readCalculator
Can You Really Earn 20-30% a Year? A Return Reality Check for DIY Investors
At 20% a year, $1 million compounds into over $9 billion in 50 years. So why do reliable 20-30% return claims collapse under scrutiny, and what should DIY investors expect?
ConceptRetirement Planning14 min readCalculator
Life-Cycle Finance: A Financial Plan for Your Entire Life
Four Nobel laureates built the theory of lifetime saving and spending. Why does retirement planning still run on rules of thumb like the 4% rule?
StrategyTax Strategy14 min readCalculator
Trump Accounts for Children: Free $1,000 or Tax Trap? A DIY Investor's Guide
Trump Accounts give eligible children a $1,000 federal investment seed, but they are not Roth IRAs or 529 plans. The benefits, drawbacks, tax rules, and when to contribute.
ConceptRisk & Protection9 min read
Are Ben Carlson's Best Inflation Hedges Actually Inflation Hedges?
Ben Carlson says the best inflation hedges are a good job, a fixed-rate mortgage, and stocks. Two of the three aren't technically hedges. Here's what the research says.
StrategyInvesting & Portfolio14 min readCalculator
VBR vs AVUV: Why Expense Ratio Isn't the Whole Small-Cap Value Story
VBR is cheaper, but AVUV targets deeper small-cap value with profitability screens. What the research says, how VIOV and VTWV compare, and whether switching is worth the fee and tax.
StrategyInvesting & Portfolio13 min readCalculator
Compensated vs. Uncompensated Risk: How to Spend Your Risk Budget
High risk tolerance gives you a bigger risk budget. Spend it on risks you get paid to bear, like the broad market, and keep speculation small enough that a total loss can't break your plan.
ConceptInvesting & Portfolio14 min readCalculator
Growth Stocks Do Not Mean Higher Expected Returns
A stock growing earnings 20% a year can still return only the market average once its multiple normalizes. Why growth describes a company, and the price you pay drives what you actually earn.
StrategyGetting Started15 min readCalculator
Debt Is a Time Machine: How Borrowing and Investing Move Money Across Your Life
Ramsey calls debt a wrecking ball. But about 38% of households who prepay their mortgage instead of investing leave money on the table. Debt and investing are mirror-image tools for moving money across time.
ConceptRetirement Planning12 min readCalculator
The 8% Withdrawal Rule: Where Dave Ramsey's Retirement Math Breaks
Dave Ramsey told a caller she could withdraw 8% of a $1.5M portfolio forever because stocks average 12%. Historically that survived just 1 in 5 retirements. Why an average return is not a safe withdrawal rate, with a calculator.
StrategyInvesting & Portfolio13 min readCalculator
When a Value ETF Becomes a Tech Bet: VLUE, Micron, and Factor-Label Risk
A value ETF returned 82% in a year while holding 25% in Micron and ~40% tech. Why strong returns can hide concentration, what the index methodology did, and how to check if your value fund actually diversifies you.
StrategyInvesting & Portfolio17 min readCalculator
Why I Avoid QQQ: Great Companies, an Arbitrary Index, and a Tax-Aware Way Out
QQQ holds great companies chosen by an arbitrary rule: where they list. Why I skip the Nasdaq-100, what I own instead, and how to unwind big QQQ gains tax-aware.
StrategyInvesting & Portfolio17 min readCalculator
Why I Avoid SCHD: Dividends, Taxes, and the Case for Systematic Value Funds
SCHD is a good fund I do not own. What its dividend screen buys, what a 3.2% forced yield costs in taxes, and why I tilt with AVUV, AVDV, and AVGV instead.
StrategyInvesting & Portfolio17 min readCalculator
If Ben Felix Uses One Fund, Do You Need Ten? When Diversification Becomes Clutter
Ben Felix holds his public equities in one fund. When is one fund enough, when do taxes justify more, and where does diversification turn into clutter?
StrategyInvesting & Portfolio16 min readCalculator
Position Sizing: The Skill That Matters More Than Picking Winners
A 100x stock taught me that being right is worthless unless the bet is sized to matter. What the evidence, poker, and the Kelly criterion say about sizing speculative bets.
StrategyInvesting & Portfolio18 min readCalculator
Is Factor Investing Dead? What the Evidence Says for DIY Investors
Factors are not dead, but the durable premium is smaller than the backtests and much of it is eaten by costs. What the research says and how to size a tilt you can hold.
StrategyInvesting & Portfolio18 min readCalculator
AVUV vs BSVO vs DFSV: Which Small-Cap Value ETF Is Best for DIY Investors?
AVUV is the cheaper, more liquid default; DFSV is the closest substitute and tax-loss partner; BSVO is the deeper-value specialist. Factor exposure, fees, capacity, and tax.
StrategyInvesting & Portfolio15 min readCalculator
Will AI Lower Interest Rates? Why DIY Investors Shouldn't Bet Their Plan on It
AI can lower inflation, but a productivity boom can raise the real neutral rate by about a point. Why experts split, and how to build a plan that survives either way.
StrategyHome & Big Purchases16 min readCalculator
Will Demographics Crash Home Prices? What DIY Investors Should Know
Low birth rates and slowing household formation trim home-price appreciation by a modest amount. What the evidence supports, with a calculator.
StrategyHome & Big Purchases20 min readCalculator
Rental Property vs. Global Index Funds: How Demographics, Leverage, Taxes, and Diversification Change the Math
Index funds are the better default for most DIY investors; a rental is a leveraged local business that must clear a hurdle. How demographics, leverage, and taxes decide it.
StrategyInvesting & Portfolio18 min readCalculator
Should You Invest in Cryptocurrency? A Practical Allocation Guide for DIY Investors
For most DIY investors, 0% crypto is reasonable; 1-2% is the evidence-based range for those who want exposure. Why sizing, not the yes/no debate, is the real question.
StrategyGetting Started17 min read
The Best Finance Books for DIY Investors: What to Read, What to Skip, and When to Move On
An opinionated, tiered, evidence-based reading list: the durable core, the gateways you graduate from, deeper portfolio books, history for humility, and what to skip.
StrategyRetirement Planning14 min readCalculator
How Much Do You Really Need to Retire? What the 2026 Surveys Say
Americans' 2026 retirement "magic number" is $1.46M, up $200K in a year on sentiment. Why a national average is the wrong target, and how to compute your own. With a calculator.
StrategyHome & Big Purchases14 min readCalculator
Why a 50-Year Mortgage Won't Fix Housing Affordability
On a $400k loan at 6.5%, a 50-year term cuts the payment by near 11% and builds almost no equity for a decade. Why a lower payment is not affordability.
StrategyGetting Started15 min readCalculator
An Index Fund Is Not a Financial Plan
Low-cost investing solves one problem. Your household still needs rules for taxes, risk, incapacity, retirement, and the handoff. With a plan gap-audit tool.
StrategyRetirement Planning18 min readCalculator
How to Withdraw From a 401(k) or IRA Before 59½ Without the Penalty
Penalty-free is not cost-free. Rule of 55, 72(t), Roth ladders, loans, hardships, the first-home and medical exceptions, and the hidden cost of lost compounding. With a calculator.
StrategyInvesting & Portfolio16 min readCalculator
The Problem With "Just Invest in Index Funds"
There are more US fund products (12,843) than companies. Indexing is the right default, but which index, how much risk, and for which goals is the real work. With a calculator.
StrategyInvesting & Portfolio15 min readCalculator
I'm an Accredited Investor. I Still Use Index ETFs.
Accredited investor status changes which private deals you can be offered. It does not make them better, more suitable, or higher returning. Plus accredited vs. qualified purchaser, the evidence, and a suitability calculator.
StrategyInvesting & Portfolio14 min readCalculator
Should You Invest Like Yale? The Endowment Model vs. a Boglehead Portfolio
Yale returned 11.1% in 2025 with private equity and hedge funds. Should you copy it? Why the endowment model works for Yale, why Swensen told individuals to index, and a hurdle-rate calculator.
StrategyRetirement Planning16 min readCalculator
Should Retirees With Social Security or a Pension Hold More Stocks?
Reliable lifetime income changes how much risk your portfolio can take. When guaranteed income means more stocks, when a fixed nominal pension does not, and how RMDs fit. With a floor-coverage calculator.
StrategyHome & Big Purchases15 min readCalculator
Should You Buy or Lease a Car? What the Math Actually Says
Buying is not always better, and leasing is not always a rip-off. The deciding factor is how long you keep the car. The present-value math, the academic evidence, and a calculator.
StrategyGetting Started15 min readCalculator
Do You Need a Financial Advisor? How to Decide and Vet One
Most people with a simple situation can do it themselves. Here is how to tell when paying for advice is worth it, what type of advisor fits, and how to vet a specific person before you hire.
ConceptInvesting & Portfolio15 min readCalculator
Do Most S&P 500 Returns Really Come From Dividends?
Many investors hear that 75% of S&P 500 returns come from dividends. The real attribution is about 31% to 33%. What actually drives long-run stock wealth, with a calculator.
ConceptInvesting & Portfolio16 min readCalculator
Savings Rate vs Investment Returns: What Matters More Depends on Your Portfolio Size
Savings rate or investment returns: which matters more? It depends on your contribution-to-portfolio ratio. The math, the five-stage lifecycle, and a calculator that names your current bottleneck.
StrategyGetting Started16 min readCalculator
Grow Income Faster Than Expenses: The Underrated Math Behind Wealth and Freedom
Your savings gap matters more than your lattes. The math of growing income faster than expenses, why it beats small-expense guilt, and how to spend more as you age while still building wealth.
StrategyRetirement Planning15 min readCalculator
High Income Is Not Wealth: How HENRYs Build Financial Independence
A high salary is a flow; wealth is the stock it builds. The math behind why HENRYs stay 'not rich yet,' the FI ratio to track, and how to close the gap.
ConceptInvesting & Portfolio16 min readCalculator
The Rebalancing Bonus: How a Volatile Diversifier Can Lift a Portfolio's Return
A volatile, low-correlation diversifier can raise a portfolio's compound return when you rebalance, even when it looks bad on its own. The math, the evidence, and the limits.
StrategyInvesting & Portfolio14 min readCalculator
AVUV vs AVDV: U.S. vs International Small-Cap Value ETFs
AVUV (0.25%) tilts U.S. small value against the Russell 2000 Value; AVDV (0.36%) does the same abroad, adding currency risk. How they differ; when to own both.
ConceptInvesting & Portfolio16 min readCalculator
Are We in an AI Bubble? William Bernstein's Four Signs and Why Investors Should Stay Humble
Are we in an AI bubble? You can't know in real time. Bernstein's four signs are a behavioral checklist for spotting a mania. A skeptic's guide with an exposure stress test.
StrategyInvesting & Portfolio20 min readCalculator
AQR Funds for Bogleheads: When Expensive Complexity Might Actually Be Worth It
AQR funds cost 50x a Vanguard index fund. When is that justified? An evidence-based look at QMHIX, QSPIX, Fusion, and tax-aware long/short for the cost-conscious DIY investor.
ConceptRisk & Protection14 min readCalculator
Can 37% of Americans Really Not Afford a $400 Emergency? What the Fed Data Actually Says
Half of Americans can't afford a $400 emergency? The Fed's 2025 data says 63% would pay it with cash. Here's what it really shows, and how to build true liquidity.
ConceptGetting Started12 min readCalculator
How to Determine Your Financial Independence Number
Your FI number is the portfolio size that lets you stop working. Learn how to calculate it from your spending and safe withdrawal rate, and explore Lean, Comfortable, and Fat FI tiers.
ConceptRetirement Planning19 min readCalculator
Is $1 Million Enough to Retire? Why $3 Million May Be the New $1 Million
Is $1 million enough to retire, or is $3 million the new benchmark? See how withdrawal rates, Social Security, FIRE math, inflation, and spending flexibility set your real number.
ConceptRetirement Planning14 min read
Coast FIRE: When Your Portfolio Can Grow Without You
Coast FIRE is the point where compound growth alone will carry your portfolio to financial independence. Learn the math, see worked examples by age, and understand how it compares to Barista FIRE and Lean FIRE.
StrategyGetting Started14 min readCalculator
Debt Avalanche vs. Snowball: Which Payoff Strategy Saves You More
Compare the two most popular debt payoff strategies side by side. Learn the math behind avalanche and snowball methods, see how extra payments accelerate your timeline, and explore when investing beats paying off debt.
StrategyHome & Big Purchases15 min read
Rent vs. Buy: A Financial Analysis Beyond the Monthly Payment
The monthly payment comparison is misleading. Learn how opportunity cost, transaction fees, tax benefits, and investment returns change the rent vs. buy math, and why hold period is the key variable.
StrategyHome & Big Purchases16 min readCalculator
Did Buying This House Beat Renting? 24 Years of Real Math
A home bought for $225K in 2002 is worth $500K today. The price return was 3.4% a year. Whether buying beat renting comes down to one number: 6.1%.
StrategyHome & Big Purchases17 min read
How Much House Can High Earners Really Afford? Three Frameworks, Three Answers
A $550K household qualifies for a $3.6M mortgage but comfortably carries closer to $2M. See how the lender, White Coat Investor, and balance-sheet lenses disagree by over a million dollars.
StrategyRetirement Planning15 min read
Safe Withdrawal Rate: Why the 4% Rule Isn't Enough
The 4% rule sets a floor for the conversation. Five modern approaches, from guardrails to CAPE rules, stress-tested with Monte Carlo across thousands of paths.
ConceptRetirement Planning15 min read
Monte Carlo Retirement Simulation: A Complete Guide
Learn how Monte Carlo simulation stress-tests your retirement plan across thousands of market scenarios, and why a single average return is not enough.
ConceptInvesting & Portfolio15 min read
Lifecycle Asset Allocation: Why Young Investors Should Hold More Stocks
In your 20s, future earnings dwarf your portfolio. Why '100 minus your age' is too conservative, and how human capital and glide paths reshape allocation.
StrategyTax Strategy16 min readCalculator
Tax-Loss Harvesting: How to Turn Portfolio Losses Into Tax Savings
Loss netting, the 61-day wash-sale window, and the five rungs of substantially identical, with different-index and Avantis/Dimensional replacement pairs.
StrategyTax Strategy17 min readCalculator
How to Sell Stocks, Mutual Funds, and ETFs Tax-Efficiently: SpecID and Tax Lots
Your broker's default cost-basis method silently picks your taxable gain. Learn SpecID, FIFO vs HIFO vs average cost vs MinTax, and how lot selection cuts the tax when you sell or rebalance.
StrategyTax Strategy14 min read
Roth Conversion Ladder: A Step-by-Step Strategy
How early retirees reach IRA money before 59½: convert in low-income years, wait five years per conversion, and fund the gap. 2026 brackets and the ACA limit.
MethodologyRisk & Protection12 min read
Understanding Your CEFR Score: Financial Health Beyond Net Worth
Your net worth is only half the picture. CEFR measures whether your assets can actually cover your future liabilities, from mortgages to healthcare.
MethodologyInvesting & Portfolio14 min read
Fama-French Factor Analysis: What Your Portfolio Is Really Doing
Go beyond simple returns. Factor models decompose your portfolio performance into systematic risk exposures like market, size, value, and momentum.
StrategyEquity Compensation12 min readCalculator
RSU Tax Strategy: What Engineers Get Wrong About Equity Compensation
RSU vests are taxable income that can push you into a higher bracket. Learn the sell-vs-hold framework, how to use tax-loss harvesting when diversifying, and the common mistakes engineers make with equity comp.
ConceptRetirement Planning15 min readCalculator
Coast FIRE Calculator: Find Your Coast Number at Every Age
Coast FIRE number = FI number / (1 + real return)^years. For a $2M target at 5% real over 28 years, that is $510,204. Tables by age plus a calculator.
StrategyInvesting & Portfolio14 min read
Concentration Risk: When to Sell Your Company Stock and How to Diversify
Single-stock concentration increases volatility without increasing expected returns. Learn how to measure concentration with HHI, run the sell-vs-hold math, and use multi-year projections to build a diversification plan.
ConceptGetting Started14 min read
How to Track Your Net Worth (Step-by-Step Guide)
Net worth is the single most important measure of financial health. Learn what to include, how to calculate it, which tracking method fits your style, and how to turn raw numbers into a plan for financial independence.
ConceptGetting Started16 min readCalculator
Should You Count Your Home and Cars in Net Worth?
Yes, count your home and cars in net worth, but not in your FIRE number. Learn the four-net-worth framework, how home equity funds retirement, and the house-rich, cash-poor trap.
ConceptGetting Started16 min readCalculator
FIRE Calculator: How Much Do You Need to Retire Early?
Calculate your personal FIRE number from your spending and safe withdrawal rate. Reference tables for FIRE numbers by spending level, a savings rate timeline chart, and three fully worked examples at different income levels.
ConceptGetting Started14 min read
Net Worth by Age: 2026 Benchmarks and Percentiles
How does your net worth compare? See average and median net worth by age group from Federal Reserve data, understand percentile rankings, and learn the metrics that matter more than the number itself.
ConceptGetting Started20 min read
The Complete Guide to Financial Independence (FIRE Movement 2026)
Everything you need to know about FIRE: how to calculate your number, types of FIRE, the five pillars of financial independence, and how to build a plan that actually works.
StrategyRisk & Protection18 min read
College Savings Plan: What 20 Years of Tuition Data Reveals About 529 Strategy
College costs have doubled in 20 years, growing 1.6x faster than inflation. See the data from 12 elite schools, learn how 529 plans work, and use three family case studies to find your savings number.
MethodologyRetirement Planning12 min read
Asset-Liability Matching: Align Your Bonds to Your Goals
Learn how to match your bond portfolio duration to your liability timeline, reducing interest rate risk and ensuring your assets are there when you need them.
StrategyRetirement Planning14 min read
Sequence of Returns Risk: Why Your Retirement Year Matters More Than Your Average Return
Two retirees with nearly identical 30-year returns can have opposite outcomes. Learn how the order of early returns determines whether your portfolio survives, and how backtesting and Monte Carlo simulation reveal risks that averages hide.
StrategyRisk & Protection16 min read
529 vs. Taxable Brokerage: Which Account Wins for College Savings?
A 529 plan is not always the best choice. See the after-tax math for three families at different tax brackets and time horizons, learn the nine drivers that determine the winner, and find out when a taxable brokerage actually comes out ahead.
StrategyTax Strategy16 min readCalculator
Should Grandparents Open Their Own 529? State Tax Benefits, FAFSA Rules, and a Decision Framework
Should grandparents open their own 529 or fund a parent's plan? See the state tax math, new FAFSA rules, gift tax limits, and a multi-state case study.
StrategyInvesting & Portfolio16 min readCalculator
Robinhood's Agentic Trading: Should You Let an AI Agent Trade Your Account?
Robinhood now lets an AI agent trade a dedicated account. The investing evidence on agentic trading, the conflict of interest, and who it actually fits.
StrategyInvesting & Portfolio17 min readCalculator
Cash-Secured Puts: Getting Paid to Buy a Stock, or to Take Its Downside?
A cash-secured put commits you to buy at a price you chose. The Micron case, the index put-writing evidence, the tax math, and who it actually fits.
StrategyRetirement Planning15 min readCalculator
When to Claim Social Security: The Math Behind the Decision
Claiming at 62 vs. 67 vs. 70 changes your lifetime benefits by hundreds of thousands of dollars. See the break-even math, three case studies, and how taxes complicate the simple answer.
StrategyInvesting & Portfolio14 min readCalculator
Lump Sum vs. Dollar-Cost Averaging: 98 Years of Evidence
Lump sum investing beats DCA 67% of the time. But the real question is when it doesn't. Explore 98 years of S&P 500 data with an interactive calculator and see which strategy won in every starting year since 1928.
StrategyTax Strategy16 min readCalculator
Roth vs. Traditional 401(k) and IRA: The Tax Math That Actually Matters
The answer depends on one number: your break-even retirement tax rate. Use the interactive calculator to find yours, see 2026 brackets, and learn why tax diversification matters more than picking the 'right' account.
MethodologyInvesting & Portfolio12 min read
Growth Stocks vs. Systematic Momentum: They're Not the Same Thing
Growth investing buys expensive companies with strong fundamentals. Momentum investing buys whatever is going up. They hold the same stocks for completely different reasons, and the academic evidence favors one over the other.
ConceptInvesting & Portfolio14 min read
Dividends Are Not Free Money: What Every Investor Should Know
When a company pays a dividend, its stock price drops by the dividend amount. You are not richer. The mechanics, the tax trap, why dividend capture fails, and why dividends still exist anyway.
ConceptInvesting & Portfolio14 min read
Why U.S. Companies with Global Revenue Don't Give You Global Diversification
Apple earns 60% of revenue outside the U.S., but its stock still moves with the S&P 500. Domicile matters more than revenue. See the correlation data, the CAPE valuation gap, and what the lost decade taught us.
ConceptInvesting & Portfolio14 min read
The Case for Global Equity Diversification: Why VTI Alone Is Not Enough
Fifteen years of U.S. dominance is one regime among several, and global markets trade at meaningfully lower valuations. The evidence for owning the world.
StrategyInvesting & Portfolio17 min readCalculator
Should You Own Emerging-Market Stocks? The Case for Market Weight
Emerging markets are 12% of the global market, trade at a forward P/E of 12 vs 19 for developed markets, and just returned 51% in a year. How much should you own?
StrategyInvesting & Portfolio17 min readCalculator
Should You Hold REITs? Real Estate Tilt or Unnecessary Sector Bet
You already own REITs at market weight inside VTI and VT. A dedicated sleeve is an optional tilt. When it makes sense, and which account to hold it in.
ConceptInvesting & Portfolio16 min readCalculator
But What About Japan? The Lost Decades, Small Value, and the Case for Global Diversification
Global stocks rose 1,400% while Japan's gained 49% from 1987 to 2018. What Japan's lost decades teach about single-country risk, value, vintage risk, and global diversification.
ConceptGetting Started18 min readCalculator
How to Start Investing: A Beginner's Guide to Personal Finance and Index Funds
Your first 90 days as an investor. Prioritize spending, open the right account, pick two index funds, and let compounding work. Evidence-based, no jargon, with an interactive compound interest calculator.
MethodologyInvesting & Portfolio14 min read
Small-Cap Value Historical Returns: Decades of Evidence, Years of Pain
From 1927 to 2023, Dimensional's U.S. small-cap value index returned about 13.1% a year to the S&P 500's 10.1%. The research and the long droughts.
StrategyInvesting & Portfolio14 min read
Why I Like AVUV, AVDV, and AVGV: Turning Factor Research into a Portfolio
AVUV, AVDV, and AVGV turn decades of academic research on size, value, and profitability into investable portfolios. Here is what each fund does, how they compare to Dimensional alternatives, and who they are not for.
StrategyInvesting & Portfolio15 min readCalculator
If Dimensional Gets Sold, Should Factor Investors Care? The Hidden Risk of Bespoke ETFs in Taxable Accounts
A rumored DFA sale is no reason to panic-sell, but it exposes a risk DIY investors miss: fund-sponsor and strategy-drift risk, plus the tax lock-in of bespoke factor ETFs in taxable accounts.
StrategyTax Strategy18 min read
Tax-Aware Decumulation: A Guide for Self-Directed High Earners
For high earners, early retirement is not a 4% rule problem. It is a multi-decade tax-management challenge across income brackets, NIIT, IRMAA, ACA subsidies, and Roth conversions. Here is the framework.
ConceptInvesting & Portfolio14 min read
The Tech Bro Portfolio: Why VOO + QQQ + NVDA Is Not Diversified
A portfolio split across VOO, QQQ, VGT, and a few tech stocks can still put 26% of your money in three companies. Ticker count is not diversification. Here is the evidence.
ConceptInvesting & Portfolio14 min read
VOO + QQQ + SCHD: The Reddit Portfolio That Isn't Diversified
Equal thirds in VOO, QQQ, and SCHD looks like three different bets. It is actually one: U.S. large-cap stocks with a growth/dividend barbell and zero international exposure. Here is what the data shows.
StrategyTax Strategy14 min readCalculator
The HSA Investing Strategy: Triple Tax Advantage for High Earners
Only 15% of HSA holders invest their funds. The rest are leaving the most tax-advantaged account in America sitting in cash. Here is the receipt hoarding strategy, the math, and who it is (and is not) for.
StrategyRisk & Protection18 min readCalculator
Where to Park Your Cash: A High Earner's Guide to SGOV, T-Bills, HYSAs, and Munis
Your HYSA is costing you money in state taxes. SGOV, T-bills, and muni money markets often beat savings accounts after tax. Use the Cash Reserve Optimizer to size your emergency fund and find the best vehicle for each layer.
MethodologyGetting Started9 min read
Import Your Monarch Money Data into Summitward
Summitward now imports Monarch Money balance-history CSVs. Export your data in two clicks, seed your net worth history, and map every account for FI planning.
StrategyInvesting & Portfolio12 min readCalculator
SGOV vs USFR: Which Treasury Cash ETF Is Better?
SGOV and USFR are both Treasury cash ETFs, but not the same fund. SGOV holds 0-3 month T-bills; USFR holds floating rate notes. How they differ, how each is taxed, and which to pick, with an after-tax yield calculator.
StrategyTax Strategy16 min readCalculator
The Tax-Advantaged Trifecta: Mega Backdoor Roth, Backdoor Roth IRA, and HSA
Single-earner married households can save $95,750 in tax-advantaged accounts in 2026; with two 401(k)s + Mega Backdoor access, the ceiling rises to $167,750. The math, the order of operations, and a calculator that handles single, dual-earner, and asymmetric cases.
MethodologyInvesting & Portfolio14 min read
Passive Investing Is a Label, Not a Literal Description
Index investing is better understood as delegated management. Someone chose the rules, the screens, and the reconstitution schedule. Here is where the discretion actually lives, and why broad indexing is still a good idea.
ConceptInvesting & Portfolio15 min read
The S&P 500 Is Passive for You, But Not Passive Under the Hood
The S&P 500 is not the 500 biggest stocks or the whole market. It is a committee-governed large-cap index. Why it became the baseline, and how VOO, IVV, SPY, VTI, and VT differ.
ConceptInvesting & Portfolio14 min readCalculator
Zero Fee, Non-Zero Benchmark Risk: Why Fidelity's ZERO Funds Optimize the Wrong Variable
Fidelity's ZERO funds are fine investments. But '0.00% expense ratio' draws attention to the least important basis points while hiding proprietary benchmark risk and narrower market coverage.
ConceptInvesting & Portfolio14 min read
JL Collins Is Right About Simplicity. He's Wrong That VTSAX Is All You Need.
VTSAX is an excellent U.S. stock fund. But treating it as a complete global equity portfolio confuses simplicity with concentration and mistakes foreign revenue for true international diversification.
StrategyHome & Big Purchases16 min readCalculator
How Much to Put Down on a House: The Framework Most Buyers Get Wrong
Stop optimizing for total interest paid. The right down payment depends on cash to close, post-close reserves, PMI thresholds, and loan-bucket boundaries. Includes a calculator for tech workers with RSUs.
StrategyHome & Big Purchases14 min readCalculator
Funding the Down Payment: Gift, Family Loan, or Sell the Stock?
Where the down-payment cash comes from changes the tax and liquidity cost more than the monthly payment. Compare selling appreciated stock, a family gift, and a family loan for a high-income tech buyer.
StrategyHome & Big Purchases14 min readCalculator
Mortgage Points: When They're Worth It and When They're Not
Points prepay interest to buy down your rate. The CFPB break-even framework, who should buy them, and why shopping lenders usually beats it. With a calculator.
ConceptInvesting & Portfolio12 min readCalculator
VTI vs. VOO: Which Should You Pick, and Does It Matter?
Both cost 0.03% and ran 0.99 correlated; VTI holds about 3,512 stocks to VOO's 504. VTI is the more principled pick, VOO is fine, and holding both adds nothing.
StrategyEquity Compensation16 min read
Your Portfolio Is Not Just Your Brokerage Account: Human Capital Risk for Tech Workers
RSU-heavy tech workers are already concentrated in U.S. mega-cap growth before buying a single ETF. Here is why the standard index fund portfolio has gaps, and what to do about it.
ConceptRisk & Protection16 min readCalculator
Don't Mix Insurance With Investing: Why Term Life Usually Wins
Insurance is for transferring catastrophic risk. Investing is for compounding capital. When a product tries to do both, you usually get more complexity, more fees, and more sales incentives. Here is the evidence.
StrategyRisk & Protection16 min readCalculator
Term Life Insurance: How Much You Need, How to Buy It, and What to Avoid
Life insurance is a temporary hedge against catastrophic income loss. Use the needs-based calculator to find your coverage gap, learn why employer coverage is not enough, and why term almost always beats whole life.
ConceptInvesting & Portfolio16 min read
60/40, Target-Date Funds, or 100% Stocks Forever? They're Solving Different Problems.
The 60/40 portfolio, Vanguard's target-date glide path, and Cederburg's all-equity research are not competing answers to the same question. Here is what each approach actually solves, who it is for, and who it is not for.
StrategyHome & Big Purchases16 min readCalculator
The True Cost of Owning a Home: Cash, Economic, and Exit Value
Your mortgage payment is not your cost of ownership. Learn the three views (cash, economic, exit) used by HUD and CFPB, see the real categories most buyers underestimate, and use the interactive calculator to compute your own numbers.
StrategyHome & Big Purchases14 min readCalculator
The True Cost of Owning a Car: Depreciation, Not the Monthly Payment
Depreciation is usually the largest cost of car ownership, and most buyers never see it. Learn the AAA/Edmunds TCO framework, see how gas, hybrid, and EV costs compare, and use the interactive calculator to find your real cost per mile.
ConceptRisk & Protection14 min read
The Four Deep Risks of Investing: What Bernstein Got Right About Real Danger
Volatility is not the real enemy. Inflation, deflation, confiscation, and devastation are. Here is Bernstein's framework for understanding what can permanently impair your purchasing power, and what you can actually do about each.
ConceptInvesting & Portfolio17 min read
Stocks Are Always Risky: The Equity Premium Exists for a Reason
Long horizons do not repeal risk. Eleven of 39 markets studied since the 1920s suffered a permanent break, and Germany lost 88% in real terms across WWII.
StrategyRisk & Protection18 min readCalculator
The Best Inflation Hedges Are Boring: Not Stocks, Gold, or Bitcoin
Keeping up with inflation long-term is not hedging inflation when you need it. The real answer is explicit CPI-linked assets (I Bonds and TIPS) plus fixed-rate debt as the underrated liability-side hedge. Includes an after-tax real yield calculator.
StrategyRisk & Protection14 min readCalculator
Emergency Fund Sizing: 3, 6, 12, or 24 Months? A Job-Risk Matrix Based on Real Labor Data
The 3-6 month rule is lazy. BLS data shows unemployment duration varies by industry. A job-risk matrix and sizing calculator for your household's real income-shock risk.
StrategyTax Strategy22 min readCalculator
RSU Withholding Calculator: What Federal Rate Should You Choose at Each Vest?
The 22% withheld at your RSU vest is not your tax rate. Solve for the federal rate you need from YTD withholding, remaining vests, and the IRS safe harbor.
StrategyGetting Started15 min read
The Order of Investing Operations: Where Your Next Dollar Should Go
A default savings waterfall from emergency fund to taxable brokerage, plus explicit branches for high earners with mega-backdoor access, self-employed savers, and house buyers in the next 3 years.
StrategyGetting Started8 min readCalculator
Money Path: The Interactive Personal Finance Flowchart for 2026
Answer 7 questions and see where you are on the 7-camp climb from budget to summit. A modern, personalized take on the r/personalfinance flowchart with 2026 IRS limits and Summitward tool deep-links.
StrategyTax Strategy16 min read
The Mega Backdoor Roth Is a Much Bigger Deal Than the Backdoor Roth IRA
Mega Backdoor Roth uses the much larger 401(k) annual additions limit, not the IRA limit. A plain-English walkthrough plus a calculator for your actual room.
StrategyEquity Compensation15 min read
Why My Paycheck Is Intentionally Too Small: The RSU Bridge Strategy for Max-Saver Tech Workers
I intentionally starve my paycheck to max 401k + MBDR + HSA, then bridge spending with a short-term reserve and quarterly RSU vest proceeds. Here's the system and a calculator to size the bridge.
ConceptInvesting & Portfolio14 min readCalculator
Most Stocks Lose to T-Bills. The Market Still Wins.
58% of U.S. stocks since 1926 lost to Treasury bills lifetime. Just 4% account for all stock-market wealth. Here's why broad diversification wins mathematically.
ConceptInvesting & Portfolio13 min readCalculator
Stocks Usually Win. "Usually" Is Not a Financial Plan.
Stocks lost to bonds for 20, 41, and even 68 years in a row. Your retirement plan needs to survive that scenario. Here's what 220 years of data show.
StrategyInvesting & Portfolio16 min readCalculator
Do You Need Managed Futures? An Evidence-Based Look at Trend Following, Return Stacking, and the Cockroach Portfolio
Trend-following managed futures can diversify across regimes, but they're not magic. Here's the evidence, the tradeoffs, and who should and shouldn't use them.
StrategyInvesting & Portfolio13 min readCalculator
Does GPIQ Beat the S&P 500? Why a Nasdaq Covered-Call Fund's 'Monthly Cash Kicker' Is Not Alpha
Does GPIQ beat the S&P 500? On Goldman's own numbers it trailed since inception. Why the 'cash kicker' and '99% tax-deferred' pitch don't add wealth.
StrategyInvesting & Portfolio17 min readCalculator
Covered Calls Are Not Free Income: What XYLD, QYLD, JEPI, and JEPQ Actually Cost You
Covered-call ETFs distribute 8-12% per year while the underlying strategy earns far less. Here's the academic evidence, the tax drag, and who they actually fit.
StrategyInvesting & Portfolio18 min readCalculator
How Financial Sales Pitches Hide the Real Cost of Investing: A Red-Flag Guide
The most heavily marketed financial products are often the most profitable for the seller. Learn the five marketing tactics, six risk lenses, and a hurdle calculator to evaluate any product.
StrategyRisk & Protection16 min readCalculator
Is a 30-Year Fixed Mortgage an Inflation Hedge? Yes, With Important Caveats
A 30-year fixed mortgage can hedge inflation, but only conditionally. Here's the math, Bernstein's four deep risks, and when the framing breaks down.
ConceptRetirement Planning17 min readCalculator
Do You Need a Paid-Off Home to Retire?
No, you do not need a paid-off home to retire, but you need durable, flexible cash flow. How a mortgage affects sequence risk, taxes, and FIRE math, with a keep-vs-payoff calculator.
StrategyGetting Started17 min readCalculator
Should Med, Law, and MBA Students Save Money? The Case for Lifecycle Consumption Smoothing
Med, law, and MBA students often save little or borrow during school. Here's the academic case (Choi, Carroll), the risks, and the middle ground.
StrategyInvesting & Portfolio16 min readCalculator
Do You Need Return Stacking? A Hurdle-Rate Framework for Portable Alpha
Return-stacked ETFs (NTSX, RSSB, RSST, SPLS) promise diversification without sacrificing equity. Here's the hurdle-rate framework for evaluating any of them.
ConceptInvesting & Portfolio18 min readCalculator
Should You Buy IPO Stocks? Why the "Ground Floor" Is Often the Exit
Mega-IPOs from SpaceX to OpenAI are coming. Here's the academic evidence on IPO returns, the first-day-pop trap, and what indexers actually own.
StrategyHome & Big Purchases16 min readCalculator
Are You About to Be House-Poor? A Stress Test for RSU-Heavy Households
Most home affordability calculators ask if you can make the payment. This one asks if you'll still be solvent if your RSUs drop 40% and a repair hits.
StrategyTax Strategy16 min read
Roth 401(k) as Vault, Roth IRA as Valve: Asset Protection vs. Withdrawal Flexibility
ERISA-protected Roth 401(k) is the accumulation vault. Roth IRA ordering rules are the withdrawal valve. The sequencing strategy + 5-year clock and pro-rata gotchas, with a withdrawal-path comparator.
StrategyTax Strategy15 min readCalculator
Don't Automatically Roll Over Your Old 401(k): A DIY Guide to Fees, Backdoor Roths, and Asset Protection
61% of IRA owners hold rollover assets, but rolling your old 401(k) to an IRA can break your backdoor Roth and cost you ERISA protection. A fiduciary-style framework, with a decision tool.
ConceptInvesting & Portfolio17 min readCalculator
Do Stock Valuations Still Matter? What CAPE Tells You About the Next Decade
CAPE near 40 doesn't mean sell. It means lower your forward return assumptions. The academic evidence on valuation ratios as long-horizon return forecasts, the valid criticisms of CAPE, and an interactive calculator for your own assumptions.
ConceptInvesting & Portfolio18 min readCalculator
Do 200 Years of Stock Returns Still Matter? Yes, but Not as a Forecast
Two centuries of returns show regimes, not a clean 6-7% real constant. McQuarrie's corrections, the railroad case, and terminal wealth across five regimes.
ConceptInvesting & Portfolio10 min read
What Real Return Should You Assume for Stocks? About 5%, Not 7%
The popular 7% real figure is U.S.-only and often quoted as an arithmetic mean. The globally diversified geometric historical mean is closer to 5% real. Here is where each number comes from, why the gap matters for your planning, and what to do about it.
ConceptRisk & Protection12 min readCalculator
FU Money: The Balance Sheet Number That Buys Back Your Choices
JL Collins's FU Money is enough accessible wealth to refuse a bad deal without your life falling apart. Five autonomy levels, the Fed and Vanguard data, and a runway stress-test calculator.
ConceptInvesting & Portfolio13 min readCalculator
The Problem With Buy the Dip: Why Wasn't the Money Already Invested?
AQR tested 196 buy-the-dip rules; most lost. Vanguard, Dimensional, PWL, and Morningstar agree. The empirical case for investing today, with a cost-of-waiting calculator.
ConceptInvesting & Portfolio12 min readCalculator
Just Keep Buying: A Strong Habit, Not a Complete Plan
Nick Maggiulli's accumulation rule, what it gets right, the savings-vs-returns crossover most peer posts miss, and which dollars it doesn't apply to. With calculator.
ConceptGetting Started12 min readCalculator
The Wealth Ladder: Six Levels, the 0.01% Rule, and Why It's a Map Not a GPS
Nick Maggiulli's six wealth levels, the 0.01% rule, UBS distribution data, and the liquidity / age / geography corrections peer book reviews skip. With total-vs-liquid calculator.
StrategyEquity Compensation7 min read
Sell Your RSUs at Vest: The Cash-Bonus Test for Tech Workers
When RSUs vest, the rational default is sell-all and diversify. Sell-to-cover and deposit-cash leave you holding a concentration bet. The cash-bonus test.
StrategyTax Strategy15 min readCalculator
Tax-Aware Long-Short: Providers, Minimums, and Whether the Tax Alpha Is Real
Frec sells 140/40 long-short from $100k at 0.50%; AQR Flex SMAs typically start at $1M via advisors. What TALS losses are worth, and who should skip it.
StrategyInvesting & Portfolio12 min readCalculator
You Have One Household Portfolio, Not One Per Account
Account labels are wrappers; risk and return live at the household level. Reichenstein after-tax, Viceira human capital, the asset-location 80/20, and a Household X-Ray calculator with location flags.
ConceptInvesting & Portfolio13 min readCalculator
Modern Portfolio Theory for Real Life: Stop Judging Funds in Isolation
Markowitz's portfolio choice for individual investors. Two-asset variance with correlation, the 'correlations go to one' supplement, the marginal-fund test, and a portfolio impact calculator.
ConceptInvesting & Portfolio14 min readCalculator
Personal Leverage: Margin, Leveraged ETFs, Lifecycle Theory, and Forced Selling
How leverage relates to MPT and Sharpe, what Ayres-Nalebuff actually argued, FINRA Reg T and 25% maintenance, the margin-call drawdown formula, daily-reset path dependency, tax wrinkles, and a Margin Stress Test calculator.
ConceptInvesting & Portfolio12 min readCalculator
RMW Explained: The Profitability Factor, Out-of-Sample Evidence, and Avantis vs Dimensional
The Fama-French RMW factor, Novy-Marx's gross profitability, out-of-sample evidence (Wahal, Linnainmaa-Roberts, Harvey-Liu-Zhu, McLean-Pontiff), the Avantis-vs-Dimensional cash-vs-operating disagreement, and a tilt + tracking-error calculator.
ConceptInvesting & Portfolio10 min readCalculator
Shareholder Yield: Why Dividend Yield Alone Is Incomplete
Dividend yield misses most of how US companies actually return cash. Boudoukh-Michaely-Richardson-Roberts (2007) showed net payout yield (dividends + buybacks - issuance) has stronger predictive power. With a Net Payout Yield Decomposer.
ConceptInvesting & Portfolio13 min readCalculator
The Stock Market Is Not the Economy: Why GDP Growth Doesn't Predict Stock Returns
The US is 26% of global GDP and 63% of MSCI ACWI. Ritter (2005) found cross-country GDP-equity correlation is negative. Five links separate GDP from per-share return, and a GDP-to-Stock-Return Bridge calculator walks every one.
ConceptInvesting & Portfolio14 min readCalculator
Does the Fed Really Set Interest Rates? Yield Curves, Term Premium, and r-Star Explained
The Fed sets one rate (FFR target). Everything else is markets. The yield curve = expected short rates + term premium, r-star is unobservable, mortgage rates aren't Fed funds + spread. With a Bond Duration Shock + Reinvestment Risk calculator.
MethodologyInvesting & Portfolio18 min readCalculator
The R² Trap: Why Rolling P/E vs. 10-Year Return Charts Are Less Certain Than They Look
Viral P/E vs. 10-year return charts show R² of 73% to 81%. In 5,000 simulated markets where valuation predicts nothing, the median R² was still 25% to 46%.
StrategyInvesting & Portfolio14 min readCalculator
Futures Yield Explained: What RSSY Actually Owns
RSSY is not a high-yield ETF. It stacks U.S. equity exposure with a systematic futures carry strategy. Here is what futures yield actually is, what the prospectus discloses, and how the live track record compares to the S&P 500.
StrategyInvesting & Portfolio17 min readCalculator
Farmland and Timberland Investing: Real Diversifiers or Expensive Illiquidity?
Farmland and timber are real asset classes, but the wrapper is the catch. See what platform fees, lockups, and taxes do to your net return vs. public REITs.
StrategyGetting Started15 min readCalculator
The 2% Yield Hiding in Your Budget: Where Credit Card Rewards Belong in a Financial Plan
$47.5B in credit card rewards earned in 2024, but $160B in interest was paid. Where rewards fit in a plan, who should optimize, and who should not.
StrategyInvesting & Portfolio13 min readCalculator
How Often Should You Rebalance Your Portfolio? An Evidence-Based Answer
Vanguard's 1926-2009 data shows monthly, quarterly, and annual rebalancing produce near-identical risk-adjusted returns. The real questions are bands, cash flow, and taxes. With an interactive checker.
StrategyEquity Compensation14 min readCalculator
Cash vs Equity Election: When Your Employer Lets You Convert Future Awards
Some employers let you swap future equity for fixed cash on the same vesting schedule. That is a forward sale of single-employer risk. With a decision tool.
ConceptInvesting & Portfolio15 min readCalculator
The Engineer's Guide to Systematic Investing
Most people expect investing to be about having an opinion. Systematic investing is about having a process. The evidence, the levels ladder, and the friction calculator that quantifies how small mistakes compound.
ConceptInvesting & Portfolio14 min readCalculator
The Stock Market Rewards Optimists, But Not the Naïve Ones
Elroy Dimson's Rational Reminder interview, distilled. Easy data bias, U.S. exceptionalism, the GDP-vs-returns gap, and a stress tester that shows how much your plan depends on the equity risk premium.
StrategyRetirement Planning16 min readCalculator
How to Build a TIPS Ladder: Turning Retirement Savings Into Inflation-Adjusted Income
TIPS ladders convert savings into guaranteed real cash flows. How to price one off the live real yield curve, how your funded ratio decides how much to floor, the phantom-income tax gotcha, and a calculator.
ConceptGetting Started15 min readCalculator
Money and Happiness: What the Research Actually Says About Funding a Good Life
The 2010 $75k plateau was an oversimplification. PERMA-V, time affluence, and how to use your portfolio to fund a good life, not just to maximize net worth. Includes a Time Affluence Calculator.
ConceptInvesting & Portfolio15 min readCalculator
The Risk-Free Rate Is Your Hurdle Rate: How to Use Treasuries and TIPS as the Starting Point for Every Investment
At 5.03% nominal and 2.74% real on May 12 2026, Treasury and TIPS yields set the hurdle every risky asset has to clear. The framework, the common mistakes, and a Hurdle Rate Check calculator.
ConceptInvesting & Portfolio16 min readCalculator
Fama-French HML Explained: What the Value Factor Means for DIY Investors
HML is the academic version of value investing: a transparent, rules-based long-short factor that asks whether cheap stocks outperform expensive ones. What the evidence says, how it differs from AQR and Avantis, and a Value Tilt Pain Test calculator.
ConceptInvesting & Portfolio17 min readCalculator
Mega-IPOs and Your Index Funds: How Free Float Decides What SpaceX, OpenAI, and Anthropic Mean for VTI, VOO, and QQQ
A trillion-dollar IPO with a 5% public float is not the same as a trillion-dollar IPO with 90%. Free-float adjustment, seasoning rules, and the methodology differences between the Morningstar, S&P 500, and Nasdaq-100 indexes decide how much exposure your index fund actually takes. Includes a Mega-IPO Index Impact Calculator.
StrategyTax Strategy16 min readCalculator
Do You Actually Need Direct Indexing?
Direct indexing is heavily marketed to high earners, but ETF tax-loss harvesting already captures most of the value for many. A skeptical primer comparing ETF TLH, long-only DI, and long/short TALS, with an interactive decay visualizer.
StrategyInvesting & Portfolio14 min readCalculator
AVGV Review: A One-Ticker Global Value Tilt for DIY Investors
AVGV bundles a global value, profitability, and smaller-cap tilt into one ETF that rebalances itself. A deep-dive review and a calculator comparing AVGV to a DIY basket of Avantis ETFs.
StrategyInvesting & Portfolio16 min readCalculator
The Simplified Engineer Investor Portfolio: A 3-Fund All-Equity Portfolio With a Global Value Tilt
36% VTI, 24% VXUS, 40% AVGV: a Boglehead core with a global value tilt. The X-Ray, the equity style box, the evidence, and an interactive tilt explorer. Who it fits and who it does not.
StrategyInvesting & Portfolio18 min readCalculator
Stock Valuation for DIY Investors: Useful Tool or Expensive Illusion?
Damodaran's SpaceX valuation, the DCF method, and an interactive 'what has to be true?' explorer. Why valuation is worth learning but stock-picking rarely beats indexing.
StrategyRetirement Planning16 min readCalculator
The Treasury Bond Fantasy: Can You Actually Live Off U.S. Government Interest Forever?
A viral tweet imagines putting your entire net worth into Treasury bonds and living off the coupons. The math is seductive and the implementation is mostly wrong. After-tax-real income, TIPS, I-bonds, and an interactive calculator that shows what the coupon actually buys.
StrategyRetirement Planning13 min readCalculator
Bengen on Inflation: The Math Behind Retirement's Greatest Risk
Bill Bengen calls inflation the greatest enemy of retirees. The math is sharper: unexpected inflation alongside an early bear market breaks the 4% rule. Replay every historical 30-year retirement window.
StrategyRetirement Planning14 min read
Bengen vs. Bengen: Should Retirees Outsource Equity Risk to a Third-Party Signal?
Bengen's 1994 paper warned against pulling back from stocks after a bad early market. His 2026 recommendation moves toward doing exactly that, via third-party perceived-risk services. What the evidence supports, and what it doesn't.
StrategyInvesting & Portfolio14 min readCalculator
Should Long-Term Index Investors Use Stop-Loss Orders? Usually No, and Here's the Math
Stop-loss orders feel like portfolio insurance. The evidence says they usually aren't. What stops do, what they don't, and when they actually help.
StrategyTax Strategy15 min readCalculator
Mega Backdoor Roth Before 59½: What Comes Out, What's Taxed, What's Penalized
MBDR dollars before 59½ live in three places: after-tax 401(k), Roth 401(k), Roth IRA. Each has its own ordering rules, 5-year clocks, and penalty math. Walk through your own numbers with the simulator.
StrategyInvesting & Portfolio15 min readCalculator
When to Sell a Winning Stock: The Question Without a Good Answer
Buying is the easy half. Selling a lucky winner means navigating taxes, anchoring, regret, and concentration. What the evidence supports.
StrategyTax Strategy15 min readCalculator
Donate Appreciated Stock or Use a DAF? The Tax Math and Where the Strategy Is Oversold
Donating appreciated stock is tax-efficient. A DAF can be a useful wrapper. Neither makes charity free. The mechanics, the 2026 OBBB changes (0.5% AGI floor, 35% deduction cap, $1k/$2k non-itemizer cash), and an after-tax cost calculator.
StrategyGetting Started18 min readCalculator
AUM vs. Hourly vs. Flat-Fee: How DIY Investors Should Pay for Financial Advice
AUM is not inherently bad, and hourly is not inherently good. Learn the three dimensions investors confuse (fiduciary, compensation source, billing method), what the academic evidence actually shows, and where commission-driven sales models like Edward Jones fit. Includes an interactive Advisor Fee Compass.
StrategyInvesting & Portfolio17 min readCalculator
Portfolio Risk Is More Than Volatility: Drawdowns, Pain Index, and Ulcer Index for DIY Investors
Volatility describes how returns vary. Pain describes how it feels to live through them. Learn when each risk metric matters: standard deviation, max drawdown, time underwater, Pain Index, and Ulcer Index, with a side-by-side calculator using 98 years of Damodaran return data.
StrategyRetirement Planning18 min readCalculator
Die With Zero vs. FIRE: Should You Spend Earlier or Let Your Money Compound?
Many high-asset retirees never draw down principal. FIRE optimizes for safety, Die With Zero for memories. Here is a third path that funds both.
StrategyInvesting & Portfolio16 min readCalculator
90/10 vs. 60/40: Is the WSJ Right That You Own Too Many Bonds?
A WSJ opinion piece says wealthy investors should hold 90% stocks and 10% cash. A portfolio researcher asks: why not add Treasury futures on top? The evidence for and against each approach.
StrategyInvesting & Portfolio18 min readCalculator
The Hungry Caterpillar Portfolio: A Silly Name for a Serious All-Weather Idea
A bedtime-story joke portfolio that eats small-cap value, bonds, gold, T-bills, and trend. Over 10 years it earned less than 60/40, with half the drawdown.
ConceptInvesting & Portfolio17 min readCalculator
The Risk Parity Reality Check: What DIY Investors Should Know Before Levering Bonds
A 60/40 looks diversified, but equities can drive 90% of its risk. What risk parity really is, whether to lever it, and when it beats a simple Bogleheads portfolio.
ConceptInvesting & Portfolio14 min readCalculator
Are Bonds Still Good Diversifiers? It Depends What Risk You're Hedging
Positive stock-bond correlations did not kill diversification. Bonds hedge growth shocks, struggle in inflation shocks, and higher yields now help. An interactive stress test.
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Disclaimer: This page is for educational and informational purposes only and is not financial, investment, tax, or legal advice. Summitward is not a registered investment adviser, broker-dealer, or financial planner, and no fiduciary relationship is created by your use of it. Consult a qualified professional before acting. Past performance and model projections do not guarantee future results. Provided as is, without warranty of any kind; see our Terms of Service for limitations of liability.