What determines your car refinance rate
Your refinance rate depends on your credit score, the age and mileage of your vehicle, how much you still owe, and the lender's own pricing. A borrower with a credit score above 750 will see rates 2 to 4 percentage points lower than someone with a score between 600 and 650, all else equal. The vehicle itself matters: lenders charge more to refinance a car that is 10 years old than one that is 3 years old, because older cars are worth less and harder to sell if you default.
The loan term you choose also affects your rate. A 36-month refinance typically carries a lower rate than a 60-month one, because the lender's risk is concentrated into a shorter window. Your employment history, existing debts, and the size of your loan relative to the car's current value all factor into the final number a lender quotes you.
Interest rates in the broader economy move the floor for all lenders. When the Federal Reserve raises its benchmark rate, car loan rates tend to rise within weeks. When rates fall, lenders may lower their offers, but they do not always pass the full cut to borrowers — some keep the margin for themselves.
Key Takeaways
- Your credit score is the single largest factor in the rate you receive, with differences of several percentage points between borrowers with different scores.
- Banks, credit unions, and online lenders price refinance loans differently, so comparing offers from at least three sources is standard practice.
- The age and mileage of your car directly affect the rate because older vehicles carry higher default risk for lenders.
- Refinancing makes financial sense only if your new rate is at least 0.5 to 1 percentage point lower than your current rate, depending on how much you still owe.
Where to get rate quotes
Banks, credit unions, and online lenders all offer car refinancing. Banks typically require you to have an existing account or meet a minimum credit score, often 650 or higher. Credit unions usually offer lower rates to members but require membership, which sometimes means opening a savings account or paying a small fee. Online lenders like LendingClub, Upgrade, and Lightstream have streamlined applications and can return a quote within hours, though their rates vary widely based on credit profile.
Getting a quote does not require you to commit. Most lenders allow you to see a rate estimate by entering basic information — your credit score range, loan amount, and vehicle details — without a hard credit pull. A hard pull, which temporarily lowers your score by a few points, only happens if you move forward. Shopping around within a 14-day window typically counts as a single inquiry for credit scoring purposes, so multiple rate checks in rapid succession do not compound the damage.
Your current lender may also refinance your loan. If you have been making on-time payments, they may offer you a better rate to keep your business. It is worth asking, even if you plan to shop elsewhere, because their offer gives you a baseline to beat.
How to compare offers across lenders
When you receive quotes, look at the Annual Percentage Rate (APR), not just the interest rate. The APR includes fees and other costs, so it is the true cost of borrowing. A lender quoting 5.2% APR is cheaper than one quoting 5.0% interest plus $500 in origination fees, even though the interest rate sounds lower.
Check whether the lender charges a prepayment penalty. Some lenders penalize you for paying off the loan early, which defeats the purpose of refinancing if you plan to pay faster. Most do not charge a penalty, but it is worth confirming in the loan agreement before you sign.
Compare the monthly payment, the total interest you will pay over the life of the loan, and how long it will take to break even on refinancing costs. If refinancing costs $300 in fees and saves you $50 per month, you break even after six months. If the savings are only $20 per month, you need 15 months to recoup the cost — and if you plan to sell or trade the car within a year, refinancing may not be worth it.
Why your credit score matters most
Lenders use your credit score to predict the likelihood you will default. A score of 750 or higher typically unlocks rates in the 3% to 5% range, depending on the vehicle and loan term. A score between 650 and 700 might see rates of 6% to 9%. Below 650, rates often exceed 10%, and some lenders will not refinance at all.
If your score has improved since you took out your original loan, refinancing becomes more attractive. Even a 50-point increase can move you into a lower rate bracket. If your score has dropped, refinancing may not save you money, and the hard credit pull required to get a quote will temporarily lower it further.
You can check your credit score for free through AnnualCreditReport.com or through your bank or credit card issuer. Many lenders also show you a score estimate before you formally explore, so you can gauge whether refinancing is likely to help before you commit to a full process.
When refinancing makes financial sense
Refinancing is worth considering if your new rate is at least 0.5 to 1 percentage point lower than your current rate. The exact threshold depends on how much you still owe and how long you plan to keep the car. If you owe $15,000 and can refinance from 7% to 5.5%, the monthly savings are roughly $35, which adds up to $420 per year. If refinancing costs $300 in fees, you break even in less than a year.
If you owe $5,000 and the rate difference is the same, the monthly savings drop to about $12, and breaking even takes much longer. In that case, refinancing may not be worth the effort unless the lender charges no fees.
Refinancing also makes sense if you need to lower your monthly payment to free up cash flow, even if the total interest you pay over the life of the loan increases. Extending a 48-month loan to 60 months lowers your payment but costs you more in interest. That trade-off is a personal decision based on your budget.
How long the refinancing process takes
From process to funding typically takes 3 to 7 business days. You submit your process online or by phone, the lender orders a vehicle inspection and title search, and they verify your income and employment. Once approved, they contact your current lender to request a payoff quote and arrange to pay off the old loan and issue new loan documents.
You continue making payments to your current lender until the refinance is complete. Some lenders allow a grace period of a few days between the old loan payoff and the new one funding, but do not assume this — ask your new lender about the timeline before you sign.
If your vehicle has a lien from your current lender, the new lender will pay it off and take their own lien in its place. This is handled automatically; you do not need to visit a DMV office or sign additional paperwork beyond the loan agreement.
Frequently Asked Questions
Will refinancing hurt my credit score?
A hard credit pull will lower your score by a few points temporarily, usually recovering within a few months. Shopping for rates within a 14-day window counts as one inquiry, so comparing multiple lenders does not compound the damage. The bigger factor is that refinancing closes one loan and opens another, which can affect your credit mix and average account age, but the impact is usually small and temporary.
Can I refinance if I still owe more than the car is worth?
Most lenders will not refinance if you are underwater on the loan. Some credit unions and specialized lenders will, but they charge higher rates to offset the risk. If you are underwater, paying down the principal before refinancing, or waiting for the car to gain value, may be your only option.
What if I have a co-signer on my current loan?
You can refinance without the co-signer if your credit has improved enough to may have access to on your own. If you still need a co-signer, the new lender will require them to sign the new loan documents. Some lenders allow you to remove a co-signer during refinancing if your credit score is strong enough.
Do I need to refinance with the same lender that holds my current loan?
No. You can refinance with any lender that offers car loans. The new lender handles paying off your current loan as part of the refinancing process. You do not need permission from your current lender to refinance elsewhere.
What happens to my old loan documents after I refinance?
Your current lender will send you a satisfaction of lien or payoff letter confirming the loan is paid in full. Keep this document for your records. Your new lender will send you new loan documents and a new promissory note. You will make payments to the new lender going forward.