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Calculate extra principal payments, save interest & pay off your mortgage early!
Mortgage Prepayment Calculator Pay off your mortgage smarter with Mortgage Prepayment Calculator. See how additional principal payments may affect your mortgage payoff timeline, total interest, and remaining balance. Test monthly extra payments, annual prepayments, or one-time lump sums and instantly compare different repayment strategies. Mortgage Prepayment Calculator helps homeowners understand the potential impact of paying additional principal without requiring an account or sending loan information to external servers. CALCULATE YOUR POTENTIAL SAVINGS Enter your mortgage balance, interest rate, and loan term, then test different prepayment strategies. View: • Estimated lifetime interest savings • Time potentially removed from your loan term • Revised estimated payoff date • Remaining mortgage balance • Principal and interest breakdowns FLEXIBLE PREPAYMENT OPTIONS Monthly Extra Payments Add a recurring amount to your normal monthly mortgage payment. Annual Extra Payments Model yearly principal payments from bonuses, refunds, or additional income. Lump-Sum Payments See how a one-time principal payment could affect your remaining loan balance and payoff timeline. COMPARE MORTGAGE STRATEGIES Compare your original mortgage with different prepayment scenarios side by side. Review differences in: • Monthly payments • Extra principal payments • Total interest paid • Estimated interest savings • Total loan cost • Payoff date • Loan duration Save mortgage scenarios so you can review and compare different strategies later. DETAILED AMORTIZATION SCHEDULE Understand how your mortgage changes over time. Choose between: • Annual amortization summaries • Monthly payment breakdowns • Principal paid • Interest paid • Extra principal payments • Remaining balance This makes it easier to understand how additional payments may change your mortgage amortization schedule. MORTGAGE GUIDES & EDUCATIONAL CONTENT Learn more about mortgage repayment concepts directly inside the app. Topics include: • Principal prepayment strategies • Mortgage recasting vs. prepayment • How mortgage amortization works • Why earlier principal payments may have a larger impact • Strategies for using bonuses or lump-sum income PRIVATE & LOCAL Your mortgage information stays on your device. • No account required • No registration • Saved scenarios stored locally • No need to upload your mortgage details to external servers MULTIPLE CURRENCY FORMATS Use the calculator with supported currency formats including: USD EUR GBP CAD AUD INR JPY CHF SGD NZD WHO CAN USE THIS APP? Mortgage Prepayment Calculator can be useful for: • Homeowners considering additional principal payments • Home buyers comparing different mortgage terms • Property investors reviewing loan amortization • Anyone evaluating how extra income could affect a mortgage • Users who want a simple mortgage payoff planning tool Plan. Compare. Understand your mortgage. Use Mortgage Prepayment Calculator to explore different repayment scenarios and better understand the potential effect of additional principal payments. IMPORTANT DISCLAIMER Calculations are estimates for informational and educational purposes only. Actual loan terms, lender calculations, fees, taxes, insurance, prepayment rules, and payoff amounts may differ. Mortgage Prepayment Calculator does not provide financial, investment, tax, legal, or lending advice.