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Repayment Math

Loan Payoff Calculator

See the scheduled payment for a fixed-rate loan, then compare the standard payoff path against an accelerated plan with extra monthly principal.

Standard payoff

5 years

Time to payoff with the scheduled amortizing payment and no extra principal.

Accelerated interest

$3,903

Total interest paid when the extra monthly amount is added each period.

Standard interest

$4,879

Interest paid if the loan stays on the original remaining schedule.

Total paid with extra

$28,903

Principal and interest combined under the accelerated payoff plan.

Accelerated payoff schedule

This table uses the fixed APR and extra-payment assumptions entered above.

Frequently asked questions

How is the payment calculated?

The base payment uses the standard fixed-rate amortizing-loan formula for the balance, APR, and months remaining.

What does extra payment do?

Extra payment is treated as additional principal paid each month. That reduces the balance faster, which shortens the term and lowers total interest.

Does this work for all loans?

It works best for fixed-rate amortizing loans. Variable-rate loans, fees, and irregular payment schedules can change real lender statements.

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