PLANNING TOOLS
Calculators
Explore financial independence, take-home pay, debt, property, and business decisions. Change the example inputs to see what they mean for you.
Free to use. No account or broker connection required.
NEW TO FINANCIAL INDEPENDENCE?
Start with your FIRE number.
FIRE means Financial Independence, Retire Early. Estimate the invested savings that could support your spending, then explore how your monthly contribution changes the timeline.
Try the FIRE calculator →Investing
When can I retire?
Find out when you could retire, how much you need, and how saving more changes the date.
Net Income
Estimate 2026 take-home pay after federal, FICA, and state tax.
Debt Payoff
Compare a snowball and an avalanche, and see the debt-free date.
Dollar Cost Averaging
Backtest a fixed monthly investment with historical prices.
Investment
Project an investment’s growth, or solve for the contribution, return, or time you need.
Net Worth
Track assets and liabilities to understand your net worth.
WACC
Explore weighted average cost of capital assumptions.
Real estate
Mortgage
Estimate monthly payments and amortization.
Rent vs Sell
Compare renting a house versus selling now and investing the proceeds.
Rental Cash Flow
Project income and expenses for a rental property.
BRRRR
Model buy, rehab, rent, refinance, repeat deals.
Business
Market research tools
ETF comparison
Compare ETF returns, risk, and costs. Explore scenarios and plan a transition from your current holdings.
Portfolio Crash Simulator
Replay 2008, 2020, or a crash of your own design on your portfolio. See the loss, the recovery time, and the effect on your FIRE date.
Market lab
Explore live market charts, technical patterns, and Jev’s market analysis in our experimental research lab.
Choose the calculator that matches your decision
Start with net income when you need a realistic monthly budget, compare debt payoff methods before redirecting payments, and use the FIRE calculator to connect today’s savings with a long-term target. For property decisions, estimate the mortgage first, then compare rent, sale, cash flow, or a BRRRR refinance using the same assumptions.
Each calculator is free to use without an account. Results are educational estimates, so review the stated assumptions and source links before making a financial decision.