Refinancing a car loan means replacing your current loan with a new one, ideally at a lower APR, so you pay less interest. It usually makes sense when rates have fallen, your credit has improved, or you accepted a high rate at the dealership, and you still have a meaningful balance and time left on the loan.
It doesn't always pay off. Late in a loan, when fees eat the savings, or when the new loan simply stretches your payments out longer, refinancing can cost more than it saves. The math below shows how to tell the difference.
When refinancing makes sense
- Rates have dropped. If market rates for auto loans are clearly lower than when you borrowed, you may qualify for a better APR on the same car.
- Your credit has improved. A higher score from a year of on-time payments, lower card balances or a corrected error on your report can move you into a cheaper pricing tier.
- You took a high dealer-arranged rate. Buyers who financed on the spot, without outside offers, often end up with a rate they can beat within months.
- You want to add or remove a co-borrower. Refinancing in your own name can release a co-signer, or adding a creditworthy co-borrower can lower the rate.
- You need a lower payment. A longer term can ease a tight budget, but it usually increases total cost. Treat it as a deliberate trade-off, not a saving.
When it usually doesn't pay
- You're near the end of the loan. Most of the interest on an amortizing loan is paid in the early years, so there is little left to save.
- Fees outweigh the savings. Title and lien fees, lender fees and any prepayment penalty on your current loan can erase a small rate cut.
- The only gain is a longer term. A lower payment spread over more months can mean paying more interest in total.
- You're underwater. If you owe more than the car is worth, many lenders will decline or charge more.
- The car is too old or has too many miles. Many lenders cap vehicle age and mileage and set a minimum loan amount.
A worked example
Say you financed $28,000 through a dealer at 11% APR for 60 months. Your payment is about $608.79. After 12 payments, you owe about $23,554.87. If you keep the loan, your remaining 48 payments total about $29,222, which includes about $5,667 of interest.
Now your credit has improved, and a lender offers 6.5% APR. Here's how two refinance options compare with keeping the current loan:
| Option | Monthly payment | Months left | Remaining interest | Total still to pay |
|---|---|---|---|---|
| Keep the current loan (11%) | $608.79 | 48 | $5,667 | $29,222 |
| Refinance at 6.5% for 48 months | $558.60 | 48 | $3,258 | $26,813 |
| Refinance at 6.5% for 60 months | $460.88 | 60 | $4,098 | $27,653 |
Keeping the same 48-month payoff date saves about $2,409. If refinancing costs $200 in fees, you still come out about $2,209 ahead. The 60-month option drops your payment by about $148 a month but saves only about $1,569 overall, and it adds a year of payments on a car that keeps aging.
Timing matters just as much. Run the same loan forward to the point where only 12 payments remain. The balance is about $6,888, with only about $417 of interest left. Refinancing that at 6.5% for 12 months saves about $172 before fees, which a typical title fee could largely wipe out.
Try your own numbers in the refinance calculator, or check a new payment with the car payment calculator.
Key takeaway: Compare the total you still have to pay on your current loan with the total of payments on the new loan plus fees. If the new total is clearly lower and you keep the same payoff date or shorter, refinancing is worth it.
How to refinance your car loan
- Check your credit. Review your reports for errors and note your current scores.
- Read your current loan contract. Find your APR, remaining term and any prepayment penalty.
- Get a payoff quote. Ask your lender for a payoff amount good for a set number of days. This differs slightly from the balance on your statement because of daily interest.
- Estimate your car's value. Lenders compare the loan amount with the car's value, so know roughly where you stand.
- Shop several lenders in a short window. Check banks, credit unions and online lenders, ideally within about two weeks. Many offer prequalification with a soft credit pull.
- Compare full offers. Look at APR, term, fees and total of payments, not just the monthly payment.
- Apply and sign. The new lender pays off your old loan directly and becomes the lienholder on your title.
- Confirm the payoff. Keep making payments on the old loan until it confirms the account is paid in full and closed, then confirm the title or lien record has been updated.
Documents you'll need
- A driver's license or other government photo ID.
- Proof of income, such as recent pay stubs, tax returns or bank statements if you're self-employed.
- Proof of residence, such as a utility bill or lease.
- Vehicle details: VIN, year, make, model, trim and current mileage.
- Your current loan's account number, lender contact details and payoff quote.
- The vehicle registration and, where your state requires it, title information.
- Proof of auto insurance that meets the new lender's coverage requirements.
Credit effects and cash-out risks
What refinancing does to your credit
A refinance application usually triggers a hard inquiry, and the new account lowers the average age of your accounts. Together, these typically cause a small, temporary score dip. Scoring models generally count multiple auto loan inquiries within a short window as one, so do your rate shopping together. On-time payments on the new loan help your score recover over the following months.
Cash-out refinancing
Some lenders let you borrow more than you owe and take the difference in cash. In the example above, adding $3,000 cash to the 48-month, 6.5% refinance raises the payment from about $559 to $630 and adds about $415 of interest. The bigger risk is equity. Cars lose value as they age, so a larger loan can quickly leave you owing more than the car is worth. That makes it harder to sell or trade in, and it can leave you with a balance to pay if the car is totaled.
Watch out: If you take cash out or stretch the term, check whether your gap coverage still applies. A gap policy sold with your original loan generally ends when that loan is paid off, and you may want new coverage on the new loan.
Rules on title transfer fees, lien recording and prepayment penalties vary by state, province and country, so check what applies where your car is registered. For background on rates and terms, see our guide to how auto loans work, and the CFPB's auto loan resources.
The bottom line
Refinancing pays when you can cut your APR meaningfully, you still have a good share of the loan ahead of you, and you keep the same payoff date or shorter. Add up the fees, compare total cost rather than monthly payment, and be wary of cash-out offers that leave you underwater. This guide is general information, not financial or legal advice.
Frequently asked questions
How soon can I refinance a car loan?
There is usually no legal waiting period, but some lenders want to see several months of on-time payments and a recorded title before they will refinance. Many borrowers wait until the original lender has the title or lien recorded, which can take a few weeks to a couple of months.
Will refinancing hurt my credit score?
It typically causes a small, temporary dip from the hard inquiry and the new account. Keeping your applications within a short rate-shopping window limits the effect, and on-time payments on the new loan help your score recover.
Can I refinance if I owe more than the car is worth?
It is harder. Many lenders limit how much they will lend relative to the car's value. You may need to pay down the balance first, add a co-borrower, or accept a higher rate.
Does refinancing cost money?
Often a little. Costs can include a title transfer or lien-recording fee set by your state, possible lender fees, and any prepayment penalty on your current loan. Add them up and subtract them from your projected savings.