Mortgage Basics

Amortization

Direct definition

The gradual repayment of a loan through scheduled payments that cover both interest and principal.

Written by the Vabasso Mortgage Editorial Team · Reviewed against agency and federal sources · Read our editorial policy for how we research and review mortgage content

Plain-English explanation

In an amortized mortgage, each monthly payment is split between interest owed for the month and principal that reduces the balance. Early payments are mostly interest; later ones are mostly principal.

Why it matters

Understanding amortization shows why extra principal payments early in the loan reduce total interest so dramatically.

Where you may see it

Amortization schedule
Closing Disclosure
Mortgage statement

A real-world example

On a 30-year, $400,000 loan at 6.5%, the first month's payment is about $2,528 — of which roughly $2,167 is interest and only $361 pays down the balance.

Educational and illustrative only

A common misunderstanding

Amortization doesn't mean equal amounts of principal and interest each month — the mix shifts over time even though the total payment stays the same.

Frequently asked

Why is early interest so high?+

Interest is charged on the outstanding balance, which is largest at the beginning of the loan.

Do all mortgages amortize the same way?+

Most fixed and adjustable mortgages fully amortize. Interest-only and balloon loans have different schedules.

Ask Vabasso AI

This glossary provides general educational information. Mortgage terminology, qualification methods, forms, timelines, fees, program rules, and legal meanings may vary by lender, investor, loan program, property, occupancy, state, and transaction. Definitions do not represent loan approval, legal advice, tax advice, or a commitment to lend.

Author: Vabasso Mortgage Editorial Team
Reviewed by: Vabasso Mortgage Licensed Advisory Team
Last reviewed: July 30, 2026