Amortization calculator with extra payments

Your payment, your payoff plan. Free, no ads, no signup.

Amortization schedule

Already know your loan amount? Go straight to the schedule, then play “what if.”

Created for Phil Stevenson, Mortgage Nerd®, NMLS 365768. Calculation methods and limitations.

See where every payment goes

Enter your loan balance, fixed interest rate and term. Expand a year to see each month’s principal, interest and balance. Add recurring or one-time principal to compare interest saved and the earlier payoff date.

A $400,000 example

At 6.5% over 30 years, principal and interest are $2,528.27 per month. This schedule excludes taxes, insurance and mortgage insurance. Use the mortgage payment calculator for those costs.

Understand the assumptions

Payments occur monthly at a fixed rate. The biweekly option approximates one extra annual payment spread across 12 months. Interest-only periods recast over the remaining term. Extra payments assume your servicer applies them to principal with no prepayment charge.