Finance Calculators
Calculators for everyday personal finance decisions — investing, taxes, debt payoff, and retirement planning. Each tool is built around a specific calculation that’s either tedious to do by hand or easy to get wrong without seeing the full picture.
Investing — The Portfolio Return Calculator computes your annualized CAGR or money-weighted return (MWRR) with or without regular contributions. The Dollar Cost Averaging Calculator shows how consistent contributions compound over time. The DRIP Calculator models dividend reinvestment. The Stock Split Calculator adjusts your cost basis after a split.
Taxes — The Capital Gains Tax Calculator applies 2026 federal rates to short and long-term gains. The 2026 Retirement Income Tax Calculator estimates federal tax on Social Security, pension, IRA withdrawals, and dividends — including the new OBBBA senior deduction. The Tax Loss Harvesting Calculator quantifies what a realized loss is actually worth at your tax rate.
Debt — The Debt Avalanche vs. Snowball Calculator compares total interest and payoff time for both strategies side by side. The Biweekly Mortgage Calculator shows how one extra monthly payment per year shortens your loan.
All calculations run in your browser. No data is stored or transmitted.
2026 Retirement Income Tax Calculator
Estimate your federal tax on Social Security, pension, IRA withdrawals, and dividends
401(k) Employer Match Calculator
See how much employer match you're capturing, what you're leaving on the table, and the long-term cost of uncaptured free money
Biweekly Mortgage Payment Calculator
See how much interest you save and how many years you cut by paying every two weeks
Capital Gains Tax Calculator 2026
Calculate your federal capital gains tax, NIIT surcharge, and state tax — with a full bracket breakdown
CD Ladder Calculator
Build a certificate of deposit ladder to maximize yield while keeping money accessible
Debt Avalanche vs. Snowball Calculator
Compare total interest paid and payoff time for both debt elimination strategies
Dividend Reinvestment (DRIP) Calculator
See how reinvesting dividends compounds your share count and portfolio value vs. taking dividends as cash
Dollar Cost Averaging Calculator
See how regular investments grow over time — and how much comes from contributions vs. compounding
Portfolio Return Calculator (CAGR & MWRR)
Calculate your annualized investment return — with or without contributions
Stock Split Calculator
Instantly see your new share count and price after any forward or reverse stock split
Tax Loss Harvesting Calculator
Calculate your immediate tax savings, future tax cost, and true net benefit from harvesting an investment loss