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Mortgage Payoff Calculator Guide
Adding a little to your mortgage payment each month can cut years off the loan and save tens of thousands in interest. This calculator shows your new payoff date, the time saved, and the interest saved from any extra monthly amount.
It calculates your required payment from the balance, rate, and term, then simulates the loan month by month with your extra payment applied straight to principal — comparing the two payoff timelines.
How Do Extra Payments Pay Off a Mortgage Faster?
Every extra dollar goes directly to principal, so it stops accruing interest for the rest of the loan. Because mortgage interest compounds over decades, even a modest extra payment early on has an outsized effect on the total.
Example: $250,000 at 6.5% over 30 Years
| Extra / month | Payoff | Interest Saved |
|---|---|---|
| $0 | 30 years | — |
| $100 | ~25.3 years | ~$59,000 |
| $200 | ~22.1 years | ~$98,000 |
| $500 | ~16.2 years | ~$164,000 |
Tips
- Start early — extra payments in the first years save far more than the same amount later.
- Confirm it goes to principal — tell your servicer, or it may be applied to next month's payment.
- Check for prepayment penalties before making large extra payments.
- Weigh other goals — high-interest debt or employer-matched retirement may beat prepaying a low-rate mortgage.
Compare with a standard Loan Payment Calculator or check your borrowing room with the HELOC Calculator.
These results are estimates for planning only and are not financial advice. Actual rates, terms, fees, and eligibility vary by lender.
Frequently Asked Questions
How much faster can I pay off my mortgage with extra payments?
On a $250,000 loan at 6.5%, an extra $200 a month pays it off about 8 years early and saves roughly $98,000 in interest.
Do extra mortgage payments go to principal?
Only if you specify it — otherwise a servicer may apply the extra to the next scheduled payment, so confirm the instruction.
Is it better to pay off my mortgage early or invest?
It depends on your mortgage rate versus expected investment returns and your risk tolerance; paying off high-rate debt first usually wins.
Does paying biweekly pay off a mortgage faster?
Yes — biweekly payments add up to one extra monthly payment a year, shortening the loan and cutting interest.
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