Mortgage amortization schedule

Most of a new 30-year payment is interest. That is not a trick; it is the loan math. Related: how much house · refi vs extra principal · full mortgage calculator.

Quick answer: This calculator shows the monthly principal-and-interest payment, how much of year one is interest, and a 12-month schedule. Taxes, insurance, and PMI are not in the schedule. The rate is whatever you type.

Home price ($) Down payment ($) Rate % Term (years)

Monthly payment is standard principal and interest. Year-1 interest is the sum of the first twelve months on the declining balance, not loan × rate. Terms longer than 50 years stop at month 600. Taxes, insurance, and PMI are not in this schedule. The rate is whatever you type. Educational only.

What this means for you

What this means for you: early payments are mostly interest because the balance is still large. Year-1 interest is the sum of the first twelve months, not loan times rate. The full PITI check lives on the mortgage calculator.

How to use this calculator

Open the Amortization calculator and keep the sample numbers or replace them with your own. The result updates as you type.
Read the headline figure first, then the breakdown or chart under it.
Use Copy share link if you want those inputs in the URL. The page is an educational estimate, not a filing, approval, or recommendation.

FAQ

What is an amortization schedule?

A month-by-month split of a fixed payment into interest and principal, with the balance falling.

Why is year-1 interest not just the rate times the loan?

The balance drops each month, so later months in the year charge interest on a smaller balance.

Does this include property tax?

No. Add tax, insurance, HOA, and PMI on the PITI calculator.

Educational, not financial advice. Page updated October 24, 2026 — no tax, limit, or rate figure was changed in this review.