
MtgCalc: Mortgage Calculator
Home Loan Payments & Payoff
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Find your monthly payment, save loan scenarios, and see how principal and interest change as your balance falls.
English interface. Calculations use U.S. dollars and fixed-rate loans with monthly payments, including a 0% rate. The app does not model extra principal, refinancing costs, adjustable rates, or country-specific lending rules. Taxes and insurance are the amounts you enter, not live estimates. Planning estimates are not loan offers; confirm terms with your lender. Contains advertising.
Enter a loan amount, annual interest rate, and a 15-, 20-, 30-, or 40-year term. Add monthly taxes, insurance, and other costs to build your estimate.
See total loan interest and principal-and-interest payments. Explore a balance chart and monthly or yearly amortization details. Save different scenarios and select one to examine its payoff schedule. A plain-language guide explains the numbers.
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What's New in MtgCalc
1.02
September 11, 2026
Redesigned calculator, payoff, saved-scenario, and guide screens. Added a balance chart and clearer total-interest summaries. Corrected monthly and yearly amortization details and improved zero-interest calculations and input validation.
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