What determines your car refinance rate
Your refinance rate depends on what lenders see when they look at your credit profile, the loan term you choose, and the current market conditions. Lenders pull your credit score, check your payment history on the existing loan, and look at how much equity you have in the car — meaning the difference between what the car is worth and what you still owe. A higher credit score typically gets you a lower rate. A longer loan term (say, 72 months instead of 48) usually means a higher rate but a lower monthly payment.
The rate you see also reflects what's happening in the broader lending market. When the Federal Reserve raises its benchmark interest rate, auto loan rates tend to rise across the board. When it lowers rates, lenders often follow. This means the "best" rate available today may be different from the rate available next month, and different lenders quote different rates even on the same day.
Your current loan balance and the car's age matter too. If you owe significantly less than the car is worth, you're in a stronger position to refinance at a better rate. If the car is very old or has high mileage, some lenders may decline to refinance it at all, or offer only higher rates.
Key Takeaways
- Your credit score, the loan term you choose, and current market conditions all shape the rate a lender will offer you.
- Rates vary between lenders on the same day, so comparing quotes from at least three different sources gives you a real picture of what's available.
- A longer loan term lowers your monthly payment but raises your interest rate and the total amount you pay over the life of the loan.
- Refinancing makes the most sense when your credit score has improved since you took out the original loan, or when market rates have dropped.
Where rates come from and why they change
Banks, credit unions, and online lenders all set their own rates based on their cost of borrowing money, their risk appetite, and their operating costs. A credit union might offer lower rates to its members because it operates as a nonprofit. A bank might offer competitive rates to attract customers. An online lender might undercut both because it has lower overhead.
The Federal Reserve doesn't set auto loan rates directly, but its decisions ripple through the market. When the Fed raises its benchmark rate, banks pay more to borrow, and they pass that cost along to borrowers. When the Fed cuts rates, the opposite happens — though lenders don't always lower rates as quickly as they raise them.
Economic conditions also play a role. If unemployment is rising or inflation is high, lenders tighten their standards and raise rates to protect themselves. If the economy is stable, competition between lenders often pushes rates down.
How your credit score affects the rate you're offered
Your credit score is one of the first things a lender looks at, and it can make a difference of several percentage points. Someone with a score of 750 or higher might be offered a rate around 4% to 6%, while someone with a score of 600 to 649 might see rates of 8% to 12% or higher, depending on the lender and the market.
The score reflects your history of paying bills on time, how much debt you're carrying, how long you've had credit accounts open, and how many times you've recently applied for new credit. If your score has improved since you took out your original auto loan — perhaps because you've paid down other debts or fixed errors on your report — refinancing could save you money.
You can check your own credit score for free through AnnualCreditReport.com, which gives you access to your reports from Equifax, Experian, and TransUnion once per year. Knowing your score before you shop for refinance quotes helps you understand what range of rates to expect.
Comparing rates from different lenders
The rate you're offered depends partly on which lender you approach. Banks, credit unions, and online lenders often quote different rates on the same day. Getting quotes from at least three different sources — and ideally from both a bank and a credit union if you're a member — gives you a real sense of what's available to you.
When you request a quote, the lender typically does a "soft pull" of your credit, which doesn't affect your score. You can shop around without penalty. However, if you move forward with an process, the lender does a "hard pull," which shows up on your credit report. Multiple hard pulls within a short window (usually 14 to 45 days, depending on the scoring model) count as a single inquiry, so doing your shopping within a few weeks doesn't hurt your score.
Pay attention to what each quote includes: the interest rate, the loan term, any fees, and the total amount you'll pay over the life of the loan. A lower rate doesn't always mean the best deal if it comes with high fees or a much longer term.
Loan term and how it changes your monthly payment and total cost
The loan term — how many months you have to repay — directly affects both your monthly payment and the total interest you'll pay. A 36-month refinance has higher monthly payments but lower total interest. A 72-month refinance has lower monthly payments but higher total interest because you're paying interest for twice as long.
Lenders typically offer terms ranging from 24 to 84 months. A longer term usually comes with a slightly higher interest rate, so the difference in total cost can be substantial. For example, refinancing $15,000 at 5% for 48 months costs roughly $1,600 in interest, while the same loan at 5.5% for 72 months costs roughly $2,400 in interest — even though your monthly payment is lower in the second scenario.
Before you choose a term, think about how long you plan to keep the car and whether you can afford the monthly payment comfortably. Refinancing into a longer term can lower your payment, but it also means you'll owe money on the car for years longer.
When refinancing makes financial sense
Refinancing saves you money when the new rate is meaningfully lower than your current rate, or when you can shorten the loan term without stretching your budget. A common rule of thumb is that refinancing makes sense if you can lower your rate by at least 0.5 to 1 percentage point, though the exact number depends on how much you still owe and how long you plan to keep the car.
Refinancing also makes sense if your credit score has improved significantly since you took out the original loan. If you were at 620 when you bought the car and you're now at 700, you may may have access to for a much better rate. Similarly, if market rates have dropped since you financed, refinancing could put money back in your pocket.
Refinancing makes less sense if you're near the end of your current loan, if you're underwater on the car (owing more than it's worth), or if you plan to sell or trade in the car soon. In those cases, the savings may not be worth the time and paperwork involved.
What happens after you refinance
Once you're approved for a refinance, the new lender pays off your old loan in full and you begin making payments to the new lender. The process typically takes one to two weeks from approval to funding. During that time, you continue making payments to your original lender as scheduled — don't skip a payment or assume the old loan is closed until you receive confirmation.
After refinancing, your monthly payment, interest rate, and loan term all change according to the new loan agreement. Your car title remains in your name (or your lender's name, depending on your state's rules). If you had a loan with your bank and refinanced with a credit union, you're now dealing with the credit union for payment and customer service.
Keep in mind that refinancing resets your loan clock. If you had two years left on a five-year loan and you refinance into a new five-year loan, you're committing to five more years of payments. This is why the total cost matters as much as the monthly payment.
Frequently Asked Questions
Can I refinance a car I'm still paying off?
Yes. You refinance by having a new lender pay off the balance of your old loan. You need to still owe money on the car, and you typically need to have owned it for at least six months to a year. The car must be in decent condition and not have extremely high mileage, though standards vary by lender.
What documents do I need to refinance?
You'll need your current loan documents (or the account number), proof of insurance, the vehicle identification number (VIN), and proof of income. Some lenders also ask for a recent utility bill or other proof of address. Have these ready before you start getting quotes so the process moves faster.
Does refinancing hurt my credit score?
A hard credit pull lowers your score by a few points temporarily, but the impact fades within a few months. Multiple hard pulls within a short shopping window count as one inquiry. Over time, refinancing to a lower rate can help your score by lowering your overall debt and improving your payment history.
What if I have bad credit — can I still refinance?
Some lenders work with borrowers who have lower credit scores, though the rates will be higher than what someone with excellent credit would receive. Credit unions sometimes offer better terms for members with lower scores than banks do. It's worth getting quotes from multiple sources before deciding whether refinancing makes sense for your situation.
How long does the refinance process take?
From process to funding typically takes one to two weeks. Getting approved can happen in a few days, but the lender needs time to verify your information, order a title search, and process the paperwork. Some online lenders move faster than traditional banks, though speed varies.