Mortgage Payoff Accelerator Calculator

See how extra monthly and annual payments can dramatically shorten your mortgage and save tens of thousands in interest.

Financial Disclaimer

This calculator is for educational purposes only and does not constitute financial advice. Results are estimates based on the inputs provided. Consult a qualified financial advisor before making investment or financial planning decisions.

Time Saved

110 months

Interest Saved

$135,115.17

Inputs

Mortgage Balance

Interest Rate

Original Loan Term

years

Extra Monthly Payment

Extra Annual Payment

Comparison

Standard Payoff Time

360 months

Standard Total Interest

$382,633.47

Accelerated Payoff Time

250 months

Accelerated Total Interest

$247,518.30

How to Use This Calculator

Enter your current mortgage balance, interest rate, and remaining term in years.
Set an extra monthly payment amount (even $100/month makes a significant difference).
Add any extra annual lump-sum payments (tax refunds, bonuses).
Compare Standard Months vs Accelerated Months and the Time Saved output.
Review Interest Saved to see the total dollars saved — often tens of thousands on a typical mortgage.

How the result changes with Original Loan Term

Original Loan Term	Time Saved	Interest Saved
7.5	7 months	$7,064.13
14	25 months	$26,202.47
21	55 months	$62,539.15
28	96 months	$116,463.58

What each input means

Mortgage Balance: Current remaining balance on your mortgage.
Interest Rate: Annual interest rate on your mortgage.
Original Loan Term: Original loan term in years.
Extra Monthly Payment: Additional amount added to your mortgage payment each month.
Extra Annual Payment: Lump sum extra payment once per year (e.g., bonus or tax refund).

Engine last updated July 11, 2026. Checked against 1 independently-derived test — how we verify calculators.

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