Adjustable-rate mortgage

A mortgage where the interest rate starts fixed for a period, then adjusts on a schedule tied to a market index. A 5/1 ARM is fixed for 5 years, then adjusts every year after.

Also called ARM · Financing · Updated September 2026

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Part 1 of 4

Why a seller cares

A buyer on an ARM qualifies on today's lower rate, which can make a financed offer a little stronger on paper. It changes nothing about your sale except how the buyer's lender sizes the loan.

Part 2 of 4

A simple example

A buyer offers $300,000 with a 7/1 ARM at 5.9%. Their payment is fixed for seven years, and the lender approves them on that payment.

Adjustable-rate mortgage: a simple example
The buyer's loanWhat it means at your closing
A 7/1 ARM at 5.9%The same wire as any loan; the rate is the buyer's business
A 30-year fixed at 6.6%Same again; a slightly higher payment they had to qualify for
The ARM adjusts in year eightYou sold in year one; it never touches you

The kind of loan shapes the buyer's payment, not your proceeds.

Part 3 of 4

What people get wrong

That an ARM makes an offer riskier for the seller. Once the loan funds, the rate schedule is between the buyer and their lender.

Part 4 of 4 · where to read next

Where it appears in the sale

What a definition is, and what it isn't

Keighbor is a software company, not a law firm, brokerage, or tax adviser. This is general information, not legal, tax, financial, or real estate advice about your sale. Your situation may differ. Before acting on a contract, disclosure, title, tax, or pricing question, ask an appropriately licensed professional in your state.

Written and researched by Keighbor Research · drawn from the reference glossary · how we research and check what we publish

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