The full explanation
The amortization schedule shows, month by month, how much goes to interest, how much to principal and how much is left to pay. Paying a little extra toward principal brings the end of the loan forward.
An example
In his first payment, almost everything Raúl pays is interest. Ten years later, the same payment reduces the debt much more, because he owes less and pays less interest.
With real numbers
Computed with official data for the whole U.S. In your county the numbers may differ.
- Principal and interest payment
- $1,803
- First payment, to interest
- $1,593
- First payment, to your debt
- $211
On a $266,160 loan over 30 years at the average rate of November 5, 2026 (7.18%), principal and interest come to $1,803 a month. In the first payment, $1,593 goes to interest and only $211 lowers your debt. Over the years, the part that lowers your debt grows.
Computed with: American Community Survey (ACS) 5-year estimates (2020–2024) · Freddie Mac Primary Mortgage Market Survey (PMMS) (November 5, 2026) · Fannie Mae Selling Guide B7-1-01 — Provision of Mortgage Insurance (October 17, 2026)
You will see it in…
- The amortization schedule from your lender or our calculator
- The Loan Estimate (“Projected Payments”)
- Your statements, under “principal paid” and “interest paid”
