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Mortgage & Home

ARM Calculator

Estimate payments for an adjustable-rate mortgage (ARM). See your payment during the initial fixed-rate period and what it could become after the rate adjusts, helping you decide between ARM and fixed-rate options.

By Quick Loan Calculators Team, Financial Content TeamLast reviewed: April 2026
$400,000
$80,000
5.75%
7.5%

Initial Payment

$1,867.43

Adjusted Payment

$2,193.61

Balance at Adjustment

$296,839.00

Fixed Period Savings

$22,203.20

Loan Amount

$320,000.00

Total Interest (est.)

$450,130.20

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How This Calculator Works

The initial payment is calculated at the introductory rate for the fixed period. After that, the payment is recalculated at the expected adjusted rate for the remaining term. This is a simplified model — actual ARM adjustments occur periodically with caps.

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Frequently Asked Questions

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Disclaimer: This calculator provides estimates for informational purposes only. Results are based on the information you provide and standard financial formulas. Actual loan terms, rates, and payments may vary. This is not financial advice. Please consult with a qualified financial professional and verify all figures with your lender before making borrowing decisions.