Use the finance balance, not the vehicle value
The early-repayment calculation starts with the amount still owed, not what the car might sell for. Enter the current balance, annual rate, normal payment and remaining term. The calculator then shows what an extra payment could do under a smooth-rate estimate.
Why an overpayment can help
Interest is generally charged on the outstanding loan balance. Paying principal down earlier means there is less balance left to attract interest. The gain is usually greater earlier in the loan, when the balance is higher and more payments remain.
Check the finance agreement
Personal loans, hire purchase, PCP and lease arrangements can treat early repayment differently. Check whether the agreement permits partial settlement, how any rebate or charge is calculated, and whether ownership or mileage terms affect your choices. Ask for a written settlement quote if you are considering clearing the agreement completely.
Keep the car affordable after the payment
Loan repayment is only part of the cost. Insurance, fuel or charging, servicing, tyres, tax, parking and unexpected repairs still need room in the budget. An overpayment should not empty the funds needed to keep the car safe and usable.
Related calculators
Sources and review notes
Examples were independently calculated using the assumptions shown. Regional limits were checked against the official sources below on 12 October 2026.
This guide is educational information, not personal financial, investment, tax or legal advice.