Loans & mortgage
Amortization Schedule Calculator
See how each fixed-rate monthly payment is divided between principal and interest over the life of a loan.
Build an amortization schedule
Monthly principal + interest—
Total interest—
Total of payments—
| Month | Payment | Principal | Interest | Ending balance |
|---|
Uses a fixed nominal annual rate divided by 12 with end-of-month payments and no extra payments or fees.
How the calculation works
The payment uses the same standard fixed-payment amortization formula already used by MoneyInNumbers loan calculators. The schedule then applies one month of interest to the remaining balance and assigns the rest of each payment to principal.
Method references
Calculator.net and Bankrate publish the same fixed-payment amortization method; Rocket Mortgage describes the same principal-and-interest schedule behavior. Reviewed September 30, 2026.
Educational estimate: Not a loan offer, lease quote, approval, appraisal, tax calculation or individualized financial advice. Verify contract terms with the applicable lender, servicer or dealer.