Car Finance Overpayment Calculator

This is an illustrative amortisation estimate for an existing standard reducing-balance loan or HP-style balance. It compares the original scheduled payment with the same payment plus the extra amount you enter.

When an overpayment is made, the model reduces the outstanding balance faster. That generally reduces the interest charged over time and can shorten the payoff term. Actual lender mechanics, agreement terms and settlement calculations can differ.

Each month, interest is calculated on the balance that remains at that point in the schedule. The regular payment covers that interest and reduces some capital; an extra payment reduces more capital.

Because later interest is then calculated on a smaller balance, a larger overpayment generally lowers both the estimated payoff term and total remaining interest. The helper simulates this month by month rather than treating interest as a flat charge.

Lenders and agreements can apply payments, interest timing, notices, fees, minimum overpayments and settlement rules differently. An actual settlement amount can therefore differ from this estimate.

This is not an early-settlement quotation, not financial advice, and not a PCP early-settlement calculator. Check whether your specific agreement permits overpayments and how the lender applies them before acting.

First check your agreement for overpayment rights, restrictions and charges. Then compare a few affordable extra-payment amounts rather than assuming the largest amount is always the right household-budget choice.

Use £0 as a baseline. If no extra payment is entered, the page deliberately reports the original schedule instead of presenting zero months saved as a benefit. Keep an emergency buffer and seek regulated advice if you need help with debt or affordability.