Refinancing replaces your current car loan with a new one, usually at a lower interest rate or with different terms
When you refinance an auto loan, you take out a new loan from a bank, credit union, or online lender to pay off the balance of your existing loan. The new lender pays off what you owe to your current lender, and you begin making payments to the new lender instead. The main reason people refinance is to reduce their interest rate — which lowers your monthly payment or lets you pay off the loan faster. You might also refinance to extend the loan term if your financial situation has tightened, or to remove a co-signer if your credit has improved.
Refinancing makes sense only if the new loan's interest rate is meaningfully lower than what you're paying now, or if the new terms solve a real problem — like a co-signer you want to remove or a payment that no longer fits your budget. The trade-off is that you restart the loan clock: if you had three years left on your original loan and refinance into a five-year loan, you'll pay interest for five years total, even though you've already paid for two years.
Key Takeaways
- Refinancing works best when your new interest rate is at least one to two percentage points lower than your current rate, or when your credit score has improved since you took out the original loan.
- You can refinance through banks, credit unions, or online lenders, and you should compare offers from at least three different sources before choosing.
- The refinancing process typically takes one to two weeks from process to funding, and your current loan remains active until the new lender's money arrives.
- Refinancing resets your loan term, so extending the term lowers your monthly payment but increases the total interest you pay over the life of the loan.
- Your car's value and how much you still owe affect whether a lender will refinance you; if you owe more than the car is worth, fewer lenders will consider your process.
When refinancing saves you money versus when it costs you
The math of refinancing depends on three things: your current interest rate, the new rate you can get, how much time is left on your loan, and how long you plan to keep the car. If you have a 6% loan with four years remaining and can refinance at 4%, your monthly payment drops and you save money overall — even accounting for any fees the new lender charges. If you can only refinance at 5.5%, the savings shrink, and if the new lender charges a $300 process fee, you might not break even for several months.
The longer your remaining loan term, the more you save by lowering your rate. If you have only six months left, refinancing probably isn't worth the effort. If you have three or four years left, a rate drop of even half a percentage point can save you hundreds of dollars. Use an auto loan calculator to compare your current payment against what you'd pay under the new terms — most lenders' websites have one, and you can also find free calculators through sites like Bankrate or NerdWallet.
One hidden cost: if you refinance into a longer loan term to lower your payment, you'll pay more interest overall. For example, refinancing a three-year loan into a five-year loan might drop your monthly payment by $50, but you'll pay an extra $1,200 in interest over those two extra years. That trade-off is sometimes necessary if your budget is tight, but it's not a savings — it's a shift in when you pay.
How your credit score and car value affect your refinancing options
Lenders use your credit score to decide whether to refinance you and what rate to offer. If your credit score has risen since you took out the original loan — because you've paid on time, paid down other debts, or corrected errors on your report — you'll likely may have access to for a lower rate. If your score has dropped, refinancing becomes harder or more expensive. Most lenders want a credit score of at least 620 to consider you, and the best rates go to borrowers with scores above 700.
Your car's value also matters. Lenders look at how much you owe versus what the car is worth. If you owe $15,000 on a car worth $18,000, you're in a strong position. If you owe $15,000 on a car worth $12,000 — called being "underwater" on the loan — many lenders won't refinance you at all, or will only do so at a higher rate. Credit unions are sometimes more flexible on underwater loans than banks are, so if you're in that situation, check with your credit union first.
Where to get refinancing quotes and what documents you'll need
Start by gathering three pieces of information: your current loan balance (from your loan statement), your car's current market value (from Kelley Blue Book or NADA Guides), and your credit score (free from AnnualCreditReport.com or your bank's website). Then contact at least three lenders: your current bank or credit union, one or two other banks or credit unions in your area, and one online lender like LendingClub, Upgrade, or SoFi.
When you request a quote, ask for a soft inquiry first — this checks your credit without leaving a mark on your report. Once you've narrowed down your choices, the lender will do a hard inquiry, which does show on your credit report but has minimal impact if you do it within a short window (usually 14 to 45 days, depending on the credit bureau). Comparing multiple quotes within that window counts as a single inquiry for credit-scoring purposes.
You'll need to provide your driver's license, proof of income (recent pay stubs or tax returns), proof of residence (utility bill or lease), and details about the car (VIN, current mileage, and the lender's name and account number). Some lenders ask for a copy of your current loan agreement. Have these ready before you start explore so the process moves faster.
The step-by-step timeline from process to funding
Once you submit an process, the lender typically reviews it within one to three business days. During this time, they'll verify your income, pull your credit report, and order a valuation of your car (sometimes an automated valuation, sometimes a physical inspection). If everything checks out, they'll send you a loan offer with the interest rate, monthly payment, and loan term. You have a few days to accept or decline.
If you accept, the lender prepares the paperwork and arranges to pay off your current loan. This is where timing matters: your current lender needs to receive the payoff amount before your next payment is due. Most refinancing takes five to ten business days from acceptance to funding. During this time, you keep making payments to your current lender as usual — don't stop or miss a payment, because the old loan is still active until the new money arrives.
Once the new lender's money reaches your current lender, your old loan is closed and your new loan begins. You'll receive new loan documents and payment instructions from the new lender. Your first payment to the new lender is usually due 30 to 45 days after funding, giving you a small grace period. Some lenders offer a slight discount if you set up automatic payments, so ask about that when you're reviewing your loan agreement.
Comparing offers: interest rate, fees, and loan terms
When you receive loan offers, don't compare only the interest rate. Look at the full picture: the Annual Percentage Rate (APR), which includes both the interest rate and any fees; the monthly payment; the total interest you'll pay over the life of the loan; and any origination, process, or prepayment penalties.
| What to Compare | Why It Matters |
|---|---|
| APR (not just interest rate) | APR includes fees, so it's the true cost of borrowing. A 4% rate with a $400 fee might have a higher APR than a 4.1% rate with no fee. |
| Monthly payment | This is what you'll actually pay each month. A lower rate over a longer term might not lower your payment as much as you expect. |
| Total interest paid | Multiply your monthly payment by the number of months to see how much interest you'll pay in total. Longer terms mean more interest. |
| Prepayment penalty | Some lenders charge a fee if you pay off the loan early. If you might pay it off ahead of schedule, avoid lenders with this penalty. |
| Origination or process fee | Some lenders charge $0; others charge $100 to $500. This comes out of your loan amount, so it increases what you owe. |
A lender with a slightly higher rate but no fees might actually be cheaper than one with a lower rate and a $400 origination fee. Use the lender's loan estimate or disclosure form — they're required to provide this — to compare apples to apples.
Reasons refinancing might not work for you
Refinancing isn't an option for everyone. If you're underwater on your loan (you owe more than the car is worth) and your credit score is below 650, most mainstream lenders will decline you. Some credit unions or specialized lenders might still work with you, but at a higher rate, which defeats the purpose.
If you're within the first few months of your original loan, refinancing might not save you money because you've already paid most of the interest up front. If your current loan has only a year or less remaining, the savings from a lower rate won't justify the time and fees involved. And if you're planning to sell or trade in the car within the next year or two, refinancing is usually not worth it — you won't have time to recoup the costs.
If your income has become unstable or your credit has taken a hit, refinancing might be harder to get approved for. In that case, focus on making your current payments on time and rebuilding your credit before you try again in six to twelve months.
Frequently Asked Questions
Will refinancing hurt my credit score?
A hard inquiry will lower your score by a few points temporarily, usually recovering within a few months. If you compare multiple offers within 14 to 45 days, they count as one inquiry. Making on-time payments to your new lender will rebuild your score faster than the inquiry hurt it.
Can I refinance if I still owe money on my car?
Yes — in fact, you almost always refinance while you still owe money. The new lender pays off your current loan balance, and you owe the new lender instead. You can't refinance a car you own outright because there's no loan to replace.
What if my car has high mileage or is older?
Lenders care more about the car's value than its age or mileage. If your car is worth enough to cover the loan balance, most lenders will consider you. Very old cars or those with very high mileage may be worth less, which could make you underwater on the loan.
Can I refinance with a co-signer, or remove one?
You can refinance with a co-signer if you need one to may have access to. If your credit has improved and you want to remove a co-signer, you can refinance without them — but you'll need to may have access to on your own income and credit. The co-signer is released once the new loan funds.
What happens to my old loan if I refinance?
Your old lender is paid in full by the new lender, and that loan is closed. You'll receive a final statement showing a zero balance. Make sure you receive written confirmation that the loan is paid off before you assume it's done.