utilkit

Mortgage Payoff Calculator

See how extra mortgage payments can reduce interest, shorten payoff time, and change your amortization schedule.

Mortgage details

Extra payment plan

Extra payments go toward your loan balance after the month's interest is covered.

Interest saved

$0
Payoff time saved
0 months
New payoff date
-
Standard payoff date
-

Total paid breakdown

Balance comparison

Standard payoff compared with extra payments

Payments by year

Regular payment, interest, and extra payments

Savings over time

Cumulative interest avoided with the extra-payment plan

Amortization preview

First 12 payments
Month Payment Toward balance Interest Extra Interest saved Balance

Interpret your mortgage payoff estimate

The result compares your current payoff path with a plan that puts extra money toward your loan balance. The main benefit is usually lower total interest and an earlier payoff date, not a lower required monthly payment.

Inputs that matter most

  • Original loan details and remaining term: used to estimate the current balance and regular payment.
  • Remaining loan balance and monthly loan payment: use these instead if you do not know the remaining term.
  • Interest rate: determines how quickly unpaid balance creates interest.
  • Extra payments: monthly, annual, and one-time amounts reduce the balance sooner.

Common mistakes

  • Entering the full payment with taxes and insurance instead of the loan-only payment.
  • Assuming extra payments automatically lower the required payment.
  • Ignoring prepayment penalties or lender rules for applying extra payments.
  • Using rounded statements when exact lender balances are available.

When this estimate can be misleading

This estimate assumes a fixed rate, no missed payments, no payment recast, no prepayment penalty, and that every extra dollar is applied to the loan balance. Actual payoff quotes can include interest through a payoff date and lender-specific fees.

Scenarios to try

  • Compare $100, $250, and $500 extra each month.
  • Add one annual bonus payment.
  • Model a one-time payment from savings.
  • Check whether the interest saved is worth the cash flow tradeoff.

Next-step calculators

Mortgage Calculator Refinance Calculator Loan Calculator

How to use this mortgage payoff calculator

Use your latest mortgage statement for the most useful estimate.

  1. Choose whether you know the remaining loan term or only know your balance and monthly payment.
  2. Enter the mortgage details from your loan documents or latest statement.
  3. Enter any extra monthly, annual, or one-time payment you plan to make toward the loan.
  4. Compare interest saved, payoff date, time saved, balance charts, and the amortization preview.

What extra mortgage payments change

Extra payments reduce the loan balance earlier, which means less interest accrues in later months.

This calculator keeps the regular scheduled payment the same. Extra payments accelerate payoff instead of recasting the payment.

If your loan servicer requires a special instruction to apply extra money to the loan balance, follow that process so the payment is not treated as a future scheduled payment.

Mortgage payoff assumptions

The calculator simulates the mortgage month by month.

Monthly interest
I_m = B_{m-1} \cdot \frac{r}{12}

B is the prior month balance and r is the annual interest rate.

Balance reduction
P_m = M + E_m - I_m

M is the monthly loan payment and E is any extra amount paid toward the balance that month.

Mortgage payoff calculator FAQ

Should I enter my total mortgage payment?
Enter only the loan part of the payment if your statement separates taxes and insurance. Taxes and insurance do not reduce the loan balance.
Do extra payments lower my monthly mortgage payment?
Usually no. Extra payments normally reduce the balance and shorten the payoff timeline while the required monthly payment stays the same.
Can my lender charge a prepayment penalty?
Some loans can include prepayment limits or penalties. Check your loan documents or servicer before relying on a large extra-payment plan.

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