Mortgage Payoff calculator.
Use this free mortgage payoff calculator to get fast estimates, compare scenarios, and understand the numbers with clear step-by-step context.
Use the Mortgage Payoff Calculator.
Compare your current payoff schedule with extra monthly payments, yearly extras, one-time lump sums, or a biweekly-style payment plan. Results update automatically.
Mortgage payoff inputs
Current mortgage
Use your current remaining balance, interest rate, and remaining term.
Extra payment plan
Add recurring or one-time principal payments to see time and interest savings.
Interest and principal comparison
Compare your original schedule against the accelerated payoff plan.
Balance over time
Original mortgage balance compared with accelerated payoff balance.
Yearly payoff schedule
Annual summary of balance, interest, principal, and extra payments under the accelerated plan.
About the Mortgage Payoff Calculator
This mortgage payoff calculator shows how extra payments can help you pay off a mortgage faster and reduce total interest. It compares your current schedule against an accelerated plan using extra monthly payments, yearly extra payments, a one-time lump sum, or a biweekly-style payment strategy.
Extra monthly payments
Adding a fixed amount every month reduces principal faster. Even small extra payments can shorten the loan and lower future interest.
Lump-sum payments
A one-time payment can produce strong savings when it is made early because it reduces the balance before more interest accrues.
Biweekly-style payoff
Paying the equivalent of one extra monthly payment per year can accelerate payoff without a large single lump sum.
What the calculator includes
The calculator includes current mortgage balance, interest rate, remaining term, current monthly principal-and-interest payment, extra monthly payment, extra yearly payment, one-time lump sum, a biweekly-style option, start year, and optional prepayment penalty or fees.
How to read the results
New payoff time shows how long the accelerated plan takes. Time saved compares the accelerated plan with the original schedule. Interest saved is the difference between original total interest and accelerated total interest. Net savings subtracts any prepayment penalty you enter.
Things to check first
Before making extra mortgage payments, consider emergency savings, high-interest debt, retirement contributions, investment alternatives, taxes, and whether your mortgage includes prepayment penalties. Some loans require extra payments to be clearly marked as principal-only.
Disclaimer: This calculator gives estimates for planning only. Actual payoff amounts can vary by lender, payment posting date, fees, escrow rules, interest accrual method, rate changes, and loan terms. Confirm final payoff details with your loan servicer.
Mortgage payoff calculator FAQ
Simple answers about extra payments, lump sums, biweekly payoff, interest savings, payoff dates, and prepayment penalties.
What does a mortgage payoff calculator do?
It estimates how extra monthly payments, yearly payments, one-time lump-sum payments, or biweekly-style payments can shorten the mortgage payoff time and reduce total interest.
What inputs do I need?
Enter the current mortgage balance, interest rate, remaining term, current monthly principal and interest payment if known, extra monthly payment, yearly extra payment, one-time payment, start date, and optional prepayment penalty.
How do extra payments save interest?
Extra payments reduce principal. A lower principal balance means less future interest is charged, so more of each later payment goes toward the loan balance.
What is the difference between monthly and one-time extra payments?
Monthly extra payments repeat every month. A one-time payment is applied once in a selected month and year. Both reduce principal, but early lump-sum payments usually create more interest savings than later ones.
What is a biweekly mortgage payoff strategy?
Biweekly repayment usually means paying half of the monthly payment every two weeks, which creates 26 half payments per year, or about 13 full monthly payments.
Can I include a prepayment penalty?
Yes. Enter a penalty amount to reduce the net savings estimate. Check your mortgage documents because some lenders charge fees for paying off a mortgage early.
Does this calculator include taxes and insurance?
No. It focuses on principal and interest payoff timing. Taxes, insurance, HOA, and escrow costs can affect cash flow but usually do not reduce the loan principal.
Should I pay off my mortgage early?
It depends on your rate, emergency savings, other debts, investment alternatives, retirement goals, taxes, and whether your loan has penalties. The result is an estimate, not personal financial advice.
What is interest saved?
Interest saved is the difference between total interest on the original schedule and total interest after extra principal payments, before or after any penalty depending on the summary shown.
Are the results exact?
They are estimates based on fixed interest, monthly compounding, and the values entered. Actual lender calculations can vary because of fees, payment timing, escrow rules, rate changes, and servicing policies.