An extra mortgage payment calculator helps homeowners estimate how additional
principal payments can reduce mortgage interest, shorten the loan payoff
timeline, and build home equity faster.
By entering your current mortgage balance, interest rate, remaining loan term,
and extra monthly payment, you can compare your regular mortgage repayment
schedule with a strategy that includes additional principal payments.
Making extra mortgage payments can reduce the outstanding principal balance
faster. Because mortgage interest is generally calculated based on the remaining
loan balance, reducing principal earlier may lower the total interest paid over
the life of the mortgage.
The amount you can save depends on your mortgage balance, interest rate,
remaining term, and extra payment amount. Even a relatively small additional
monthly payment can potentially shorten the payoff period when maintained over
many years.
This calculator can help you answer questions such as:
- How much interest can I save by paying extra on my mortgage?
- How much sooner can I pay off my mortgage?
- What happens if I pay an extra $100, $300, or $500 per month?
- How does an extra monthly payment change my mortgage payoff date?
You can also use the Mortgage vs Investing mode on our Mortgage Calculator to
compare paying extra toward your mortgage with investing the same amount of
additional cash.
The results are estimates based on the assumptions entered into the calculator.
Actual mortgage savings may differ because of lender rules, payment timing,
rounding, fees, and other loan terms.