Refinancing a car is worth it if your interest rate drops enough to offset the costs, or if you need to lower your monthly payment to stay afloat
Whether refinancing saves you money depends on three things: how much your interest rate falls, how long you keep the car, and what the refinancing itself costs. If you can drop your rate by at least 1 to 2 percentage points and you plan to keep the car for several more years, refinancing usually pays off. If you are refinancing just to lower a payment by $20 a month, the fees often eat that gain.
The math is straightforward once you know your numbers. A lower rate means less interest paid over time. But refinancing involves a credit check, possibly a vehicle inspection, and sometimes a title transfer fee — costs that vary by lender and state. You need to calculate whether the interest you save exceeds what you pay to refinance.
Key Takeaways
- Refinancing makes financial sense when your new interest rate is at least 1 to 2 percentage points lower than your current rate and you plan to keep the car for at least two more years.
- The total cost of refinancing includes the lender's fees, a credit check, and sometimes a vehicle inspection or title transfer fee, which vary by state and lender.
- You break even on refinancing when the monthly savings multiply by the number of months you keep the car and exceed the upfront costs.
- Refinancing does not reset your loan term unless you choose a new one; you can refinance into the same remaining time to keep payments the same but pay less interest.
- Your credit score affects the rate you receive, so refinancing makes less sense if your score has dropped since you took out the original loan.
How to calculate whether refinancing saves money
Start by finding out what rate you could get. Most lenders let you check your rate without a hard credit pull, which means your credit score does not take a temporary hit. Visit banks, credit unions, and online lenders — rates vary significantly. Write down the new rate, the new monthly payment, and any fees the lender charges upfront.
Next, subtract the new monthly payment from your current payment. Multiply that number by the number of months you plan to keep the car. That is your total savings from the lower payment. Then subtract all the refinancing costs — origination fees, appraisal fees, title fees, whatever the lender lists. If the savings exceed the costs, refinancing is worth it financially.
Example: Your current payment is $350 a month. A new lender offers $320 a month with $200 in fees. You save $30 per month. If you keep the car for 24 months, you save $720 total. Subtract the $200 in fees, and you net $520. That is worth doing. If you only keep the car for 6 months, you save $180 minus $200 in fees, which is a loss.
When refinancing does not make sense
Refinancing costs money upfront, so it only works if you keep the car long enough to recoup those costs. If you are planning to sell or trade in the car within the next year, refinancing is almost certainly a waste. The fees will eat any savings from a lower rate.
Refinancing also makes less sense if your credit score has dropped since you took out the original loan. Lenders base your rate on your credit score at the time you refinance, not your original score. If you have missed payments, run up credit card balances, or had other credit problems, you may not may have access to for a rate lower than what you already have. Check your credit report before you explore.
You should also avoid refinancing if you are underwater on the loan — meaning you owe more than the car is worth. Some lenders will refinance an underwater loan, but many will not, and those who do charge higher rates. Being underwater makes refinancing harder and less likely to save you money.
What happens to your loan term when you refinance
Refinancing does not automatically extend your loan. You choose the new term when you refinance. Many people refinance into a longer term to lower their monthly payment, but that means paying more interest overall, even at a lower rate. A shorter term costs more per month but saves interest.
The smartest move is often to refinance into the same number of months you have left on your current loan. If you have 36 months remaining, refinance for 36 months. Your payment may drop because of the lower rate, but you pay off the car on the same timeline and pay less total interest than you would with a longer term.
Some people refinance into a longer term because they need the payment to be lower right now. That is a valid reason — if you cannot afford your current payment, refinancing into 60 months instead of 36 might keep you from falling behind. Just understand that you are paying more interest to get breathing room.
Credit unions versus banks versus online lenders
Credit unions often offer the lowest rates, especially if you are a member and have good credit. They also tend to have lower fees than banks. If you belong to a credit union, start there. If you do not, you can often join one through your employer, your school, or a community organization.
Banks offer competitive rates and are convenient if you already bank there, but their fees can be higher than credit unions. Online lenders are fast and sometimes have lower fees, but rates vary widely depending on your credit score. Shop at least three lenders before deciding. The difference between a 4% rate and a 5% rate on a $15,000 loan is hundreds of dollars over the life of the loan.
When you get a quote, ask about all fees: origination fee, processing fee, appraisal fee, title fee, and any prepayment penalty on your current loan. Some lenders bundle these into the interest rate; others charge them separately. A lender with a slightly higher rate but lower fees might cost you less overall.
Prepayment penalties on your current loan
Before you refinance, check your current loan documents or call your lender and ask whether there is a prepayment penalty. Some loans charge a fee if you pay off the balance early. If your current loan has a prepayment penalty, add that cost to your refinancing calculation. A $500 prepayment penalty changes the math significantly.
Prepayment penalties are less common now than they used to be, but they still exist. If your loan has one, the penalty is usually a percentage of the remaining balance or a set number of months of interest. Ask your current lender for the exact amount before you move forward.
Refinancing when you still owe money on the car
You can refinance a car loan at any point, even if you still owe significantly more than the car is worth. The new lender pays off your old loan and gives you a new one. The title transfer happens between lenders, not through you. This process usually takes one to two weeks.
During that time, you still own the car and can drive it. Your old lender releases the title once the new lender pays them off. You do not need to do anything except sign the paperwork and provide the vehicle identification number and current loan information.
Frequently Asked Questions
Will refinancing hurt my credit score?
Refinancing involves a hard credit inquiry, which temporarily lowers your score by a few points. The impact is usually small and fades within a few months. Multiple inquiries within a short time (like shopping around with several lenders) count as one inquiry, so do your shopping within 14 to 45 days depending on the credit bureau.
Can I refinance a car I just bought?
Yes, but wait at least a few months. Lenders are more willing to refinance after you have made several on-time payments, which shows you are reliable. Refinancing when ready after purchase also means you have not built any equity yet, so the savings are smaller. Most people wait three to six months before refinancing a new purchase.
What if I have bad credit?
Refinancing with bad credit is harder and usually does not save money. Lenders charge higher rates to borrowers with low credit scores. If your score has dropped since you took out the original loan, you may not may have access to for a rate lower than what you have. Focus on paying on time for six to twelve months to improve your score, then refinance.
Can I refinance if I am behind on payments?
Most lenders will not refinance if you are currently behind on your loan. You need to be current on your payments before you explore. If you are struggling to make payments, contact your current lender about a loan modification or deferment before you consider refinancing.
How long does refinancing take?
The approval process usually takes three to five business days. The title transfer and final paperwork can add another one to two weeks. Some online lenders are faster, offering approval within 24 hours, but the full process still takes about two weeks from start to finish.