Part of our guide: What Is a 10-Day Payoff Quote? Auto Loan Payoff Explained
A car loan early payoff calculator shows how much interest and time you could save by adding extra to your monthly payment. Enter your balance, your APR and your monthly payment, add an extra amount, and the tool below works out your new payoff date and the interest you would avoid.
Most car loans charge simple interest, which means interest is calculated on the balance you still owe. Cut that balance faster and less interest accrues. The calculator estimates the difference so you can judge whether extra payments are worth making.
In short:
- Extra money reduces your balance only if the lender applies it to principal. The CFPB says a payment goes first to any fees due, then to interest, then to principal, and that you may need to ask for the extra to be applied to the principal.
- On a simple-interest loan, paying down the balance sooner lowers the total interest and shortens the loan.
- On a precomputed-interest loan it does not. The CFPB says extra payments there “does not reduce the principal amount (or interest) owed”, so the result below will not apply to you.
- Check your agreement for a prepayment penalty before you start. The CFPB notes that some states prohibit them for certain loans.
Car loan early payoff calculator
Enter your loan details. Nothing is sent anywhere; the calculation runs in your browser.
Car Loan Early Payoff Calculator
See how much interest and time you could save by adding extra to your monthly payment.
Educational estimate only, not financial advice. Results assume a fixed rate and the same payment each month, and exclude fees and prepayment penalties. Ask your lender for an official payoff quote before making extra payments.
How the calculator works
The tool runs your loan twice: once at your current payment, once with the extra amount added. For each run it charges a month of interest on the outstanding balance, applies the rest of the payment to principal, and repeats until the balance reaches zero. The gap between the two runs is your time saved and interest saved.
It assumes a fixed rate and the same payment every month, and excludes fees, add-on products financed into the loan, and any prepayment penalty. Treat the result as an estimate and confirm the exact figure with your lender.
A worked example: $100 extra on a $25,000 loan
Say you owe $25,000 at 7% APR and pay $495 a month. Left alone, the loan runs 61 months and costs $4,702 in interest. Add $100 a month and it clears in 49 months at a cost of $3,763, so you save $939 and a full year of payments.
| $25,000 at 7% APR | Current payment | With $100 extra |
|---|---|---|
| Monthly payment | $495 | $595 |
| Time to pay off | 61 months | 49 months |
| Total interest | $4,702 | $3,763 |
| You save | — | $939 and 12 months |
The saving comes from cutting the balance sooner, so interest has less principal and less time to build on. The higher your APR, the larger the effect.
Before you make extra payments: a checklist
- Check for a prepayment penalty. Read the Prepayment section of your agreement. The CFPB says some states prohibit penalties on certain loans, and that a penalty is negotiable before you sign.
- Confirm the loan charges simple interest. Extra payments do nothing on a precomputed loan unless you settle the whole balance.
- Tell the lender where the money goes. Ask that extra amounts reduce the principal rather than being held as a future payment, then check your next statement to confirm the balance actually fell.
- Keep an emergency buffer. Money sent to a lender cannot be taken back.
- Clear higher-rate debt first. Credit cards usually cost far more than a car loan.
Related car loan payoff guides
- How to pay off a car loan early, including how to make sure extra money reaches the principal
- Should I pay off my car loan early?, a 5-question test with the break-even rate
- What is a 10-day payoff quote?
- How to calculate your 10-day payoff amount
- Lien release after car payoff
- When to refinance a car loan, and when to wait
Before you start, check what your contract allows: can you pay off a car loan early? covers prepayment penalties, the federal refund rule and state law.
Working through the whole process? Our complete car loan payoff guide maps every stage, from deciding whether early payoff pays to chasing the title.
Frequently asked questions
Does paying off a car loan early save money?
On a simple-interest loan, yes. Interest is charged on the balance you still owe, so cutting the balance sooner means less interest accrues. On a precomputed-interest loan the CFPB says extra payments do not reduce the principal or interest owed, so the only saving comes from settling the balance in full. Check for a prepayment penalty either way.
How much can I save by paying an extra $100 a month?
It depends on your balance, rate and remaining term. On a $25,000 balance at 7% APR with a $495 payment, adding $100 a month clears the loan in 49 months instead of 61 and costs $3,763 in interest instead of $4,702, a saving of $939 and a full year of payments.
Will paying off my car loan early hurt my credit score?
It can cost a few points, mainly if it was your last active installment loan. FICO says “paying off the last of your active installment loans can result in a loss of points”, because a low installment balance-to-loan ratio is read as less risky than having no installment loan at all. Closed accounts stay on your report for years, so your average account age is not the reason. FICO also says the effect is not permanent.
Is it better to pay off a car loan early or invest the money?
Compare your APR against what your cash actually earns after tax, not against a headline savings rate. Because your loan balance shrinks while cash earns on the full amount, the loan rate has to be roughly double the cash rate to break even. Keep an emergency fund and clear higher-rate debt such as credit cards first.
Do extra payments automatically reduce my principal?
No. The CFPB says a payment goes first to any fees due, then to interest, then to principal, and that you may need to request that more of your payment be applied to the principal. Check your next statement: the balance should fall by your scheduled principal plus the extra, rather than your due date jumping forward a month.
Sources
- CFPB: simple interest vs precomputed interest on an auto loan, checked 25 September 2026
- CFPB: is it better to pay off the interest or principal on my auto loan?, checked 25 September 2026
- CFPB: can I prepay my loan at any time without penalty?, checked 25 September 2026
- myFICO: can paying off loans lower your FICO Score?, checked 25 September 2026
This calculator and guide are education, not financial advice. Confirm your official payoff amount with your lender before making extra payments.
Built and checked by Nimra Saleem for MoneyMentorDesk.com on 25 September 2026. The worked example was calculated with the same method the tool uses.
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