Whether refinancing saves you money depends on your interest rate, how much time is left on your loan, and what you still owe
Refinancing a car means taking out a new loan to pay off your existing one. The new lender pays what you owe, and you start making payments to them instead. You refinance only if the new loan has a lower interest rate, a shorter term, or both — otherwise you are just moving debt around without benefit.
The math is straightforward: subtract what you will pay in total interest under the new loan from what you would pay under the old one. If the new loan costs less overall, refinancing is worth considering. But you also need to account for any fees the new lender charges, because those reduce your savings.
Key Takeaways
- Refinancing only makes sense if your new interest rate is at least one percentage point lower than your current rate, or if you want to shorten the loan term.
- The longer your current loan has left to run, the more interest you can save by refinancing early.
- Banks, credit unions, and online lenders all offer car refinancing, and rates vary significantly between them.
- Fees charged by the new lender — typically $0 to $500 — must be subtracted from your interest savings to find your true benefit.
- If you are underwater on your loan (owe more than the car is worth), most lenders will not refinance you.
Calculate your actual savings before you commit
Start by finding out what your current loan will cost you in total. Look at your loan statement or call your lender and ask for the payoff amount and the total interest you will pay if you make every remaining payment on schedule. Write both numbers down.
Then get a rate quote from a potential new lender. They will tell you what interest rate they would offer you and what the monthly payment would be. Use that rate to calculate what the new loan would cost in total interest over its full term. Subtract any origination fees or processing fees the new lender charges.
Compare the two totals. If the new loan costs less overall, the difference is your potential savings. But do not refinance unless that savings is at least $500 to $1,000, because the time and effort involved is not worth a smaller gain.
The interest rate gap that makes refinancing worthwhile
A one percentage point difference in interest rate is usually the minimum threshold. If you currently have a 6 percent loan and can refinance at 5 percent, that is worth exploring. If the difference is only 0.5 percent, the savings are usually too small to justify the effort.
Your credit score is the main factor that determines what rate you will be offered. If your score has improved since you took out the original loan, you have a real chance of getting a better rate. If your score has dropped or stayed the same, a new lender will likely offer you a similar or worse rate, and refinancing makes no sense.
You can check what rate you might may have access to for by getting quotes from multiple lenders. Most will give you a preliminary rate without a hard credit inquiry, which means checking rates does not damage your credit score. Hard inquiries only happen if you actually explore.
How much time left on your loan matters
The more months you have remaining on your current loan, the more interest you will pay overall, and the more you can save by refinancing. If you have only six months left, there is almost no interest left to save. If you have four years left, refinancing can be meaningful.
This is why refinancing makes the most sense in the first two to three years of a loan. After that, you have already paid most of the interest, and the remaining balance shrinks quickly with each payment.
Be cautious about extending your loan term when you refinance. If you currently have 24 months left and refinance into a new 48-month loan, your monthly payment drops but you pay interest for twice as long. You may end up paying more in total interest even at a lower rate.
Where to get refinancing quotes and what to compare
Credit unions typically offer the lowest rates for car refinancing, especially if you are a member. Banks offer competitive rates but often have stricter requirements. Online lenders are fastest but may charge higher rates or fees.
Get quotes from at least three lenders before deciding. Each quote should show the interest rate, the monthly payment, the loan term, and any fees. The fee structure varies: some lenders charge an origination fee (typically 1 to 2 percent of the loan amount), some charge a processing fee (usually $50 to $300), and some charge nothing.
When you compare, look at the total cost of the loan, not just the monthly payment. A lower monthly payment sometimes means a longer loan term, which costs more in total interest.
Situations where refinancing does not work
If you are underwater — meaning you owe more than the car is worth — most lenders will not refinance you. You can still try credit unions or specialized lenders, but expect higher rates or a requirement to pay down the difference yourself.
If your car is very old or has high mileage, some lenders will not refinance it at all, regardless of your credit. They consider the vehicle too risky as collateral. Ask the lender about their vehicle requirements before you spend time on an process.
If you are behind on your current loan payments, refinancing is not an option. You must bring the account current first.
What happens when you refinance
Once you choose a lender and are approved, they handle most of the paperwork. The new lender pays off your old loan in full, and you sign documents for the new loan. You then make payments to the new lender instead of the old one.
The process typically takes one to two weeks from approval to funding. During that time, your old lender still owns the title to the car. Once the new lender pays them off, the title transfers to the new lender. You do not need to do anything with the title yourself — the lenders handle the transfer.
Your car insurance does not change. You keep the same policy and the same coverage. You do not need to notify your insurance company that you refinanced.
Frequently Asked Questions
Will refinancing hurt my credit score?
Getting rate quotes does not hurt your score. Hard inquiries from actual applications do lower your score slightly, usually by 5 to 10 points, but the impact is temporary. Your score typically recovers within a few months. Multiple inquiries within a short time period (two weeks) usually count as a single inquiry for scoring purposes.
Can I refinance a car I am still paying off?
Yes. You can refinance at any point while you still owe money on the car. The new lender pays off the old loan, and you start fresh with the new one. You do not need permission from your current lender.
What if my car is worth less than I owe?
Most mainstream lenders will not refinance you if you are underwater. Some credit unions and specialized lenders will, but they may charge a higher interest rate or require you to pay down part of the difference yourself. It is worth asking, but do not expect approval.
How long does refinancing take?
From process to funding usually takes one to two weeks. Some online lenders are faster — as little as a few days — but most banks and credit unions take closer to two weeks. Your old loan is paid off during this time, so you are not making double payments.
Should I refinance if it only saves me $200?
Probably not. The time spent explore, gathering documents, and signing paperwork is not worth a $200 savings. A minimum savings of $500 to $1,000 makes the process worthwhile. If the savings are smaller, keep your current loan.