Free mortgage planner
Model a mortgage overpayment.
Enter the balance, rate, remaining term and monthly overpayment to see the new payoff time and interest saved. For the fixed-rate model caveats, open the complete tool.
Mortgage overpayment calculator workspace
Runs locally in your browser
Checking your allowance…
Guest access includes 3 public-tool runs per rolling 24 hours. Inputs stay on this device.
Lender overpayment limits, fees and rate changes can change the real result.
Result
Original monthly payment—
New payoff time—
Interest saved—
Months saved—
Planning note