ARM vs Fixed Mortgage Calculator

Compare fixed mortgage payments with ARM intro and adjusted payment scenarios.

Fixed Payment

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ARM Initial Payment

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ARM Adjusted Payment

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Intro Period Savings

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Guide

How it works

Use this calculator to compare an adjustable-rate mortgage with a fixed mortgage.

What this calculator does

The ARM vs fixed mortgage calculator compares fixed payment, ARM intro payment, adjusted ARM payment, and intro-period savings.

ARM vs Fixed Formula

The calculator amortizes the ARM during the intro period, then recalculates payment at the adjusted rate.

Example calculation

If a fixed mortgage rate is 6.5% and an ARM starts at 5.5% for 5 years, the calculator estimates intro savings and the adjusted payment.

When to use this calculator

  • comparing ARM and fixed offers
  • estimating payment reset risk
  • reviewing refinance timing
  • planning affordability under higher rates

FAQs

Is an ARM always cheaper?

No. It may start cheaper, but payments can rise after the initial fixed period.

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