Financial Calculators
Free financial calculators for mortgages, loans, interest, investments, retirement, and taxes. Estimate payments and returns in seconds.
- Mortgage CalculatorEstimate your full monthly payment — principal, interest, property taxes, homeowners insurance, PMI and HOA — then see how extra monthly, yearly or one-time payments and an accelerated biweekly schedule shorten the loan and cut total interest.
- Loan CalculatorCalculate the payment and total interest on any fixed-rate loan — amortized with regular payments, deferred to a lump sum at maturity, or bond-style with a fixed amount due — with your choice of compounding and payback frequency, and a year-by-year breakdown.
- Auto Loan CalculatorCalculate your monthly car payment with sales tax, fees, any rebate, your trade-in and whatever you still owe on it — financed or paid at signing — so the number you plan around matches what you will actually borrow, and see the total cost of the car.
- Compound Interest CalculatorSee how an investment grows when interest compounds — with regular contributions at the start or end of each period, any compounding frequency up to continuous, the effective annual rate and its equivalent at other frequencies, the rule of 72 against the exact doubling time, and a year-by-year breakdown.
- Interest CalculatorCalculate simple or compound interest on a deposit or loan — with time in years, months or days, any compounding frequency, the APY, and the formula worked with your numbers so you can check the result.
- Retirement CalculatorProject what your savings will be worth at retirement in future and today's dollars, the income that balance supports under the 4% rule and under a full spend-down to your planning age, and — given the income you want and any pension or Social Security — the balance you need and the monthly saving that reaches it.
- Sales Tax CalculatorAdd sales tax to a price, or reverse the calculation to find the pre-tax price from a total that already includes tax — with every US state rate one click away and the arithmetic shown.