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Definition

Fixed-Rate Mortgage

A mortgage with an interest rate that stays constant throughout the loan term.

Written by Jere Salmisto·Reviewed by CalcFi Editorial·Last verified: 2026-05-13
TL;DR

Fixed-Rate Mortgage is A mortgage with an interest rate that stays constant throughout the loan term. Used in mortgage.

What Is Fixed-Rate Mortgage?

A fixed-rate mortgage is a home loan where the interest rate remains constant for the entire loan term (typically 15, 20, or 30 years). Your monthly payment of principal and interest stays the same throughout the loan, making budgeting predictable and protecting you from rate increases. Fixed-rate mortgages are the most common and popular because of this stability and simplicity. The tradeoff: fixed rates are typically higher than the initial rate of adjustable-rate mortgages (ARMs), so you pay more upfront. However, the stability and predictability of fixed rates makes them appropriate for most borrowers. When interest rates are historically low, locking in a fixed rate is especially attractive.

Related Terms

Adjustable-Rate Mortgage (ARM)
A mortgage with an interest rate that changes periodically based on a market index.
Mortgage
A loan used to purchase real estate, secured by the property itself.
Interest Rate
The cost of borrowing money or the return on savings, expressed as a percentage.

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