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Mortgage Extra Payment CalculatorFinance

Mortgage Extra Payment Calculator

Model recurring, delayed, annual and one-time principal payments against the exact years remaining on your mortgage.

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What Is the Mortgage Extra Payment Calculator?

The Mortgage Extra Payment Calculator builds month-by-month baseline and accelerated amortization schedules from the current balance, interest rate and actual years remaining. Use the calculated scheduled payment or supply the real principal-and-interest amount, then model delayed monthly extras, a timed one-time payment and recurring annual principal. It reports payoff month and year, time and interest saved, total extra principal, final payment and year-one schedule detail.

How It Works

Enter the current balance, rate and years remaining. Choose the calculated payment or your actual principal-and-interest payment, then add any monthly, one-time or annual principal strategy and its start month.

When to Use It

Use it before setting up recurring extra payments, after a windfall, or when comparing extra payments against refinancing or investing.

Frequently Asked Questions

Does It Include Taxes And Insurance?
No. Use only the principal-and-interest portion of your payment; escrow amounts do not reduce the balance.
Why Do Years Remaining Matter?
The remaining term determines the scheduled payoff horizon and, when you use the calculated-payment mode, the principal-and-interest payment needed to finish on time.
Do Extra Payments Always Work This Way?
Only when the servicer applies them to principal. Confirm the payment is not being treated as an early next-month payment, and check for prepayment penalties on some loans.

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