Compare adjustable-rate mortgages (ARM) vs fixed-rate mortgages. Analyze payment volatility, total costs, and see which mortgage type works better for your timeline and financial situation. Perfect for homebuyers evaluating 5/1 ARM, 7/1 ARM, and fixed-rate options.

Loan Basics

$
years
years
$

Fixed-Rate Settings

%
%
$
Upfront cost: $0

ARM Settings

%
years
months
%
Advanced ARM caps & limits
%
%
%
%
%
$
Upfront cost: $0

ARM SAVES $21,103
over your 7.0-year horizon

Initial ARM monthly (P&I): $2,373
Fixed monthly (P&I): $2,594
Analysis horizon: 7.0 years
Intro window ends at: 5.0 years
Total cost over horizon (interest + upfront)
Fixed: $181,079 vs ARM: $159,975
Interest only (excludes upfront)
Fixed: $181,079 vs ARM: $159,975

Which might suit your needs?

Over your 7.0-year horizon, the ARM is projected to cost $21,103 less than the fixed-rate option (including upfront costs).

  • Your horizon extends beyond the introductory period. Consider your comfort with payment changes at resets and your expectations for future rates.
  • On payment volatility, your ARM payment could range from $2,373 to $2,485 over the horizon (max increase of $113 from the initial payment).

Rules of thumb: If you value certainty or believe rates will rise faster than your assumed path, a fixed rate fits better. If you'll move or refinance before the first reset and can handle potential increases, an ARM can reduce total cost.

Summary
Winner (cost):ARM
Break-even:—
ARM payment shock:$113
Inside intro window:No

This tool is for education only. It does not provide financial or tax advice. Rates and caps vary by lender and note. Always review your specific loan terms.

Average Payment by Year (P&I + extras)

Y1Y2Y3Y4Y5Y6Y7$0$650$1,300$1,950$2,600
  • Fixed
  • ARM

Remaining Balance at Year End

Y1Y2Y3Y4Y5Y6Y7$0k$100k$200k$300k$400k
  • Fixed
  • ARM

Cumulative Interest (through year)

Y1Y2Y3Y4Y5Y6Y7$0k$50k$100k$150k$200k
  • Fixed
  • ARM

ARM Rate Path (avg by year)

Y1Y2Y3Y4Y5Y6Y70.0%2.0%4.0%6.0%8.0%
  • ARM average rate