Finance & Investing
Finance & Investing Calculators
Plan borrowing, saving, investing, pay, and major money decisions.
19 tools
1099 Self-Employment Tax Calculator
Estimate federal self-employment tax and a quarterly planning amount for 1099 income.
Mortgage Refinance Break-Even Calculator
Compare old and new mortgage payments and estimate refinance break-even time.
Paycheck After Tax Calculator
Estimate take-home pay with real state tax rules.
compound interest calculator
Calculate compound interest with recurring contributions.
crypto profit calculator
Calculate crypto profit and ROI with fees.
debt payoff calculator
Estimate debt payoff timeline with avalanche or snowball strategy.
mortgage affordability calculator
Check what house fits your budget based on income and debts.
percentage calculator
Calculate percentages, increases, and changes instantly.
savings growth calculator
See how your savings grow with compound interest over time.
stock profit calculator
Calculate stock profit, ROI, and per-share returns.
student loan payoff calculator
Estimate payoff timeline and interest savings for student loans.
Balance Transfer Savings Calculator
Compare keeping credit-card debt with transferring it to a promotional APR after fees.
Credit Card Payoff Calculator
Estimate credit-card payoff time and interest from balance, APR, and monthly payment.
DCA Investment Calculator
Estimate recurring-investment growth, contributions, and gains using monthly compounding.
Dividend Reinvestment Calculator
Estimate portfolio growth when dividends are reinvested with editable yield and price growth.
Emergency Fund Calculator
Estimate an emergency-fund target, current gap, and time needed to reach it.
Loan Comparison Calculator
Compare monthly payment, total interest, and total cost for two fixed-rate loans.
Rent Affordability Calculator
Estimate a monthly rent range using gross income, debts, savings goals, and a rent cap.
Stock Average Cost Calculator
Calculate weighted average share cost, total shares, cost basis, and unrealized gain.
How to use this collection
Choose the calculator that matches the decision you are making. Each tool explains its assumptions and keeps the primary calculation separate from any commercial recommendation.