Personal Finance Calculators
Last updated: October 2026
Mortgage Payment Calculator
Estimate the full monthly cost of owning a home β principal, interest, property tax, and homeowner's insurance β bundled into the single number lenders call PITI.
401(k) Contribution Calculator
Estimate your annual 401(k) contributions, employer matching dollars, and immediate tax savings based on your salary and plan details.
House Affordability Calculator
Estimates the most you can pay for a house from income, debts, down payment, rate, term, property tax, insurance and PMI, with 28/36 or FHA 31/43 ratios.
Investment Portfolio Allocation Calculator
Get a starting-point stock-allocation percentage for your investment portfolio based on age, risk tolerance, and time horizon.
Compound Interest Calculator
Project the future value of an investment given a lump-sum principal, recurring monthly contributions, an annual rate, and a compounding frequency.
Loan Amortization Calculator
Calculate the fixed monthly payment on an amortizing loan, with the option to add an extra payment.
Retirement Withdrawal Calculator
Calculate the monthly withdrawal amount a retirement portfolio can sustain at a chosen annual withdrawal rate (e.g., the classic 4% rule).