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Extra Payments Calculator

See how making extra payments toward your mortgage could help shorten your loan term and reduce the total interest you pay. Enter your current loan details along with the amount and frequency of any additional payments you plan to make. Review the results to see how extra payments may affect your payoff date and overall interest costs. Use the calculator to compare different payment strategies and find an approach that fits your financial goals.

See how extra payments can reduce your loan term and save on interest

How Extra Mortgage Payments Affect Your Loan

When an additional payment is applied directly to your mortgage principal, it reduces the balance used to calculate future interest. Continuing to make extra principal payments may shorten the time needed to repay the loan and reduce the total interest paid over the remaining term.

How the Calculator Estimates Savings

The calculator compares the scheduled amortization of your mortgage with a scenario that includes the extra payments you enter. It estimates how the additional principal affects the remaining balance, payoff timeline, and total interest over the life of the loan.

Extra Principal vs. Mortgage Recast

Making an extra principal payment reduces your loan balance, but it generally does not change your required monthly payment. A mortgage recast is different. If available, the lender recalculates the required payment based on the lower balance while keeping the existing loan in place. Recast availability, minimum payment requirements, and fees vary by loan and servicer.
Example: Making an Extra Monthly Payment
Suppose a homeowner has a $300,000 mortgage with a 6.00% interest rate and a 30-year term. Adding $200 per month toward principal can change the estimated payoff date and total interest compared with making only the scheduled payment.

Enter these numbers in the calculator above, then compare the original payoff schedule with the extra-payment scenario. This example is for illustration only and is not a loan quote or guarantee of savings.

Before Making Extra Payments

Check with your mortgage servicer to confirm how additional payments are applied and whether your loan has any restrictions or prepayment-related provisions. Make sure extra funds are applied toward principal when that is your intention. You may also want to compare extra payments with other options, such as keeping additional cash available, requesting a recast when eligible, or using our Refinance Savings Calculator when appropriate.

Calculator results are estimates based on the information entered. Actual loan balances, interest calculations, payment application, and payoff dates may vary by loan and mortgage servicer.

Extra Payments vs. Mortgage Payoff Strategies

For a broader look at structured mortgage payoff approaches, visit our Biweekly Mortgage Payments & Accelerated Payoff Strategies guide to compare biweekly payments, extra principal payments, and other approaches for paying down a mortgage faster.

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