Refinancing a car loan means replacing your current loan with a new one, usually at a lower interest rate or with different terms
When you refinance, you take out a new loan to pay off the balance on your existing car loan. The new lender pays off what you owe, and you begin making payments to them instead. The main reason people refinance is to lower their interest rate — which reduces the total amount you pay over the life of the loan — or to change the loan term to fit a new budget.
Refinancing is not the same as trading in your car or selling it. You keep the same vehicle. The only thing that changes is who holds the loan and what terms you owe under. Whether refinancing makes sense depends on your current interest rate, how much you still owe, your credit score now versus when you took out the original loan, and how much longer you plan to keep the car.
Key Takeaways
- Refinancing saves money only if your new interest rate is meaningfully lower than your current rate — typically at least 1 to 2 percentage points lower.
- Your credit score has improved since you took out the original loan, which is the most common reason a lower rate becomes available.
- Refinancing costs money upfront (process fees, title transfer fees, and sometimes prepayment penalties on your current loan), so the monthly savings must be large enough to cover those costs.
- The closer you are to paying off the original loan, the less sense refinancing makes, because you have fewer months left to benefit from a lower rate.
How your credit score affects the interest rate you can get
When you first financed your car, the lender looked at your credit score and set an interest rate based on the risk they saw. If your credit score has risen since then — because you have paid bills on time, paid down other debts, or corrected errors on your report — a new lender will see you as lower risk and may offer a lower rate.
You can check your credit score for free through AnnualCreditReport.com, which is the only federally authorized site for free credit reports. Many banks and credit card companies also offer free score monitoring to their customers. A score that was 620 when you bought the car but is now 700 or higher makes refinancing worth exploring. Even a 50-point improvement can move you into a lower rate bracket.
The opposite is also true: if your score has dropped, refinancing will not help you. Lenders will offer you a rate equal to or higher than what you already have, making the deal pointless.
When the math works: calculating your break-even point
Refinancing has upfront costs. Your new lender charges an process fee (typically $50 to $300), and your state charges a title transfer fee (varies by state, usually $25 to $200). Some lenders also charge a loan origination fee, which can be 1 to 2 percent of the loan amount. If your current lender has a prepayment penalty — which is less common now but still exists — you pay that too.
To know whether refinancing is worth it, calculate your break-even point. Subtract your new monthly payment from your current monthly payment. Divide the total upfront costs by that difference. The result is the number of months you need to keep the car for refinancing to save you money.
Example: Your current payment is $350 per month at 6.5 percent interest. A new lender offers 4.5 percent, which brings your payment to $310. The difference is $40 per month. Refinancing costs $400 in fees. You break even after 10 months ($400 ÷ $40). If you plan to keep the car for at least 12 more months, refinancing saves you money. If you plan to sell or trade it in within 10 months, it does not.
How much time is left on your loan matters
The closer you are to paying off your current loan, the less refinancing helps. If you have 60 months left and refinance into a new 60-month loan at a lower rate, you benefit for the full term. If you have 12 months left, a new 60-month loan extends your debt by four years, and you may pay more total interest even at a lower rate.
Some people refinance into a shorter term — for example, refinancing a 48-month loan with 24 months remaining into a new 24-month loan. This keeps the payoff date the same but lowers the rate. This works only if the new monthly payment fits your budget. Shortening the term raises the monthly payment, even though the interest rate is lower.
If you have fewer than 24 months left on your loan, refinancing is rarely worth the upfront cost and hassle. The savings window is too small.
Market interest rates and timing
Interest rates for auto loans change based on broader economic conditions. When the Federal Reserve raises its benchmark rate, auto loan rates typically rise. When the Fed cuts rates, auto loan rates usually fall. You cannot predict these changes, but you can monitor current rates through lenders' websites or rate-comparison tools.
If rates have dropped significantly since you took out your loan — a full percentage point or more — refinancing is more likely to make sense. If rates have risen or stayed flat, refinancing probably will not help. Check rates from at least three lenders: your current bank, a credit union (if you are a member), and an online lender. Rates vary, and a 0.5 percent difference on a $15,000 loan adds up over time.
When refinancing does not make sense
Do not refinance if you are underwater on the loan — meaning you owe more than the car is worth. Lenders will not refinance an underwater loan, or will charge you a much higher rate to do so. Wait until the car's value catches up to what you owe.
Do not refinance if you are behind on payments or have missed payments recently. Your credit score will reflect this, and lenders will either deny you or offer a rate higher than your current one. Focus on catching up first.
Do not refinance if you plan to sell or trade in the car within the break-even period you calculated. The upfront costs will outweigh any savings. Also avoid refinancing if the new loan term extends significantly beyond when you expect to keep the car — you will be paying interest on a vehicle you no longer own.
Where to shop for a refinance loan
Banks, credit unions, and online lenders all offer auto refinancing. Credit unions often have lower rates than banks, especially if you have been a member for a while. Online lenders move quickly and may approve you within hours. Banks offer the advantage of a relationship if you already bank there.
When you request a rate quote, the lender will do a hard inquiry on your credit, which temporarily lowers your score by a few points. Multiple inquiries within 14 to 45 days (depending on the type of credit) count as a single inquiry, so shop around within a short window. This limits the damage to your score.
Read the full loan agreement before signing. Check for prepayment penalties (some lenders charge you if you pay off the loan early), late fees, and whether the rate is fixed or variable. Most auto refinance loans are fixed-rate, meaning your payment stays the same for the entire term.
Frequently Asked Questions
Can I refinance a car I still owe money on?
Yes. The new lender pays off your current loan balance, and you owe the new lender instead. You must still own the car outright or have the lender's permission — if your current lender holds the title, the refinancing process includes transferring it to the new lender.
Will refinancing hurt my credit score?
Refinancing causes a small, temporary drop in your credit score when the lender does a hard inquiry. The score usually recovers within a few months. Opening a new loan account also temporarily lowers your score, but this effect fades as you make on-time payments.
What if my current lender charges a prepayment penalty?
Some lenders charge a fee if you pay off the loan early. Check your loan agreement or call your lender to ask. If the penalty is large, subtract it from your refinancing savings to see if the deal still makes sense. Many newer loans do not have prepayment penalties.
Can I refinance a used car I bought from a private seller?
Yes, as long as you have a loan on it. The car's age and mileage may affect the interest rate a lender offers — older cars with high mileage are riskier to lenders — but refinancing is still possible. Some lenders have limits on how old a car can be (typically 10 to 15 years old).
How long does refinancing take?
Most refinancing is completed within 7 to 14 days from approval. The new lender pays off your old loan, and you receive new loan documents and a payment schedule. During this time, you continue making payments to your current lender until the payoff is processed.