ConvertOnlineMortgage Payoff Calculator with Extra Payments
Report source: https://convertonline.org/calculators/mortgage-payoff-calculator
Mortgage Payoff Calculator
Estimated accelerated payoff date
Amortization schedule
| Payment | Date | Amount | Principal | Interest | Extra | Balance |
|---|
Mortgage Payoff Calculator formula
Each month, interest equals the opening balance × annual rate ÷ 12. The regular payment and any extra principal reduce the balance. Interest saved equals baseline interest minus accelerated-schedule interest.
If the current principal-and-interest payment is unknown, leave it blank and the calculator will estimate the scheduled payment from the balance, rate, and remaining term.
Assumptions and limitations
- Extra amounts are applied directly to principal without a prepayment penalty or processing delay.
- The annual rate and regular principal-and-interest payment remain fixed.
- Escrowed property tax, insurance, HOA fees, and other charges do not reduce principal and are excluded.
- Confirm with the loan servicer how to designate extra principal and whether any restrictions apply.
Worked example
Example: adding $200 per month and a $5,000 payment
Consider a $250,000 mortgage balance at 5% with 25 years remaining. The baseline schedule uses the regular principal-and-interest payment for the remaining term.
Adding $200 each month plus a $5,000 one-time principal payment produces an earlier payoff date. The result compares both schedules so the months and interest saved are visible before making a decision.
Frequently asked questions
Should I enter my current mortgage payment?
Enter only the principal-and-interest portion when you know it. Leave the field blank to estimate it from the current balance, annual rate, and remaining term.
How is a one-time payment scheduled?
The extra amount is applied to the first scheduled monthly payment on or after the selected date.
Can a lender handle extra payments differently?
Yes. Confirm that the servicer applies the extra amount to principal and ask about prepayment penalties, minimums, or special instructions.
This calculator provides an estimate for planning and education. Actual lender calculations, fees, and payment dates may differ.