What auto refinance companies do and how to find one that fits your situation

Auto refinance companies replace your existing car loan with a new one, usually at a lower interest rate. You keep the same vehicle, but you owe the money to a different lender under different terms. The goal is to reduce your monthly payment, lower the total interest you pay over the life of the loan, or both.

The companies that refinance car loans fall into three categories: banks you may already know (like Wells Fargo or Chase), credit unions (which often offer lower rates to members), and online lenders (like LendingClub or Upstart). Each has different requirements, different approval timelines, and different rates depending on your credit score and how much you still owe on the car.

The decision between them usually comes down to three things: whether you're a member or can join a credit union, whether you want to work with a bank you already use, or whether you prefer the speed and convenience of an online process. None of these is objectively "best" — it depends on your credit history, how much you owe, and what matters most to you in the process.

Key Takeaways

  • Credit unions typically offer lower rates than banks or online lenders, but you must be a member or meet membership requirements to borrow from them.
  • Banks like Wells Fargo, Chase, and Bank of America refinance car loans and may offer better rates if you already have an account with them.
  • Online lenders like LendingClub, Upstart, and Lightstream approve and fund loans faster than traditional banks, sometimes within one business day.
  • Your interest rate depends primarily on your credit score, the age of your car, and how much you still owe compared to what the car is worth.
  • You will need your current loan documents, proof of insurance, and the vehicle's title or registration to start the process with any lender.

Credit unions: lowest rates, but membership required

Credit unions consistently offer the lowest interest rates on auto refinance loans because they are member-owned nonprofits, not profit-driven corporations. Organizations like Navy Federal Credit Union, Pentagon Federal Credit Union, and Connexus Credit Union are among the largest and often have rates one to two percentage points lower than banks or online lenders for borrowers with good credit.

The catch is membership. Some credit unions are open to anyone in a geographic area; others require you to work for a specific employer, belong to a union, or have a family member who is already a member. If you don't may have access to for membership at a credit union, you cannot borrow from them. If you do may have access to, the process process is usually straightforward and approval can happen within a few days.

To find credit unions you may be able to join, start with CO-OP Network or Shared Branch locators on the Credit Union National Association website. These tools let you search by employer, location, or association. Once you find one that accepts you, call or visit their website to ask about auto refinance rates and what documents you'll need to bring.

Banks: familiar names, moderate rates, account holder advantages

Major banks like Wells Fargo, Chase, Bank of America, and Citibank all refinance auto loans. Their rates are typically higher than credit unions but competitive with online lenders, especially if you already have a checking or savings account with them. Many banks offer a rate discount (usually 0.25 to 0.5 percentage points) if you set up automatic payments from an account at the same bank.

The advantage of refinancing through a bank you already use is simplicity: you can often start the process online or in person at a branch, and the bank already has some of your financial information on file. The disadvantage is that banks move slower than online lenders — approval typically takes five to ten business days, and funding can take another week.

If you have an account at a major bank, log into your online banking portal or call the customer service number on the back of your debit card and ask about auto refinance options. They will tell you what rates you may receive based on your credit profile and what documents to gather. You do not need to refinance with them just because you bank there, but it is worth checking their offer before you look elsewhere.

Online lenders: fastest approval, widest range of credit scores accepted

Online lenders like LendingClub, Upstart, Lightstream, and SoFi specialize in refinancing and often approve borrowers faster than banks or credit unions. Many can give you a rate quote within minutes and fund the loan within one to three business days. This speed matters if you want to pay off your current loan quickly or if you're in a time-sensitive situation.

Online lenders also tend to accept a wider range of credit scores than traditional banks. If your credit is fair or rebuilding, an online lender may offer you a rate when a bank would decline. The tradeoff is that their rates for borrowers with excellent credit are usually not as low as what a credit union would offer.

To get your free guide with an online lender, visit their website and use their rate quote tool. You will enter basic information about yourself, your car, and your current loan. Within minutes, you'll see an estimated rate and monthly payment. If you want to move forward, you'll upload documents (usually your driver's license, proof of insurance, and your current loan statement) and the lender will verify the information. Approval and funding happen entirely online.

What determines the rate you'll actually receive

Every lender uses the same basic factors to set your interest rate: your credit score, the age and mileage of your car, how much you still owe on the loan, and the loan term you choose. A borrower with a 750 credit score will receive a much lower rate than one with a 620 score, regardless of which lender they choose. Similarly, a five-year-old car with 60,000 miles will get a better rate than a ten-year-old car with 150,000 miles.

One factor that varies by lender is how much they will lend relative to the car's value. Some lenders have strict limits — they won't refinance if you owe more than 120 percent of what the car is worth. Others are more flexible. If your car has depreciated significantly and you're underwater on the loan (you owe more than it's worth), you may only have options with certain lenders.

Before you explore, check your credit score using a free tool like Credit Karma or AnnualCreditReport.com. This gives you a realistic sense of what rate range to expect. Then get quotes from at least two or three lenders — a credit union if you may have access to, a bank if you have an account, and an online lender. Compare not just the interest rate but the monthly payment, the total interest you'll pay, and the time to funding.

Documents you'll need and what happens after approval

Every lender will ask for the same core documents: a government-issued ID (driver's license or passport), proof of insurance for the vehicle, and your current loan statement or payoff quote from your existing lender. Some lenders also ask for proof of income (a recent pay stub or tax return) and a utility bill or other proof of address. Have these ready before you start an process.

Once a lender approves you, they will contact your current lender to get a payoff amount and arrange to pay off the old loan directly. You will not receive a check or have to manage the transition yourself. The new lender sends the payoff amount to the old lender, and your loan is transferred. This process usually takes three to seven business days after approval.

During this transition period, keep making payments to your current lender unless they tell you to stop. Do not assume the new lender has paid them off yet. Once the payoff is complete, you'll receive a confirmation from the new lender and your first payment will be due according to the new loan terms. Your car's title will remain in your name throughout — the lender is just the creditor, not the owner.

When refinancing makes sense and when it doesn't

Refinancing saves you money if the new interest rate is lower than your current rate and you keep the car long enough to recoup any fees. If you're currently paying 8 percent and can refinance at 5 percent, the savings are usually worth it. If you're currently paying 4 percent and can only get 3.9 percent, the savings may be small enough that they disappear if the new lender charges an origination fee or if you're planning to sell the car in a year.

Refinancing also makes sense if you need to lower your monthly payment because your financial situation has changed. Even if the total interest you pay is slightly higher, a lower monthly payment can be the difference between keeping the car and losing it. In that case, look for lenders willing to extend the loan term — paying over 72 or 84 months instead of 60 months, for example.

Refinancing usually does not make sense if your car is very old (typically more than ten years), has very high mileage (typically more than 150,000 miles), or if you're planning to sell or trade it in within the next year or two. Most lenders won't refinance these vehicles, and even if they do, the savings won't justify the effort.

Frequently Asked Questions

Will refinancing hurt my credit score?

Your credit score will drop slightly when you explore because the lender does a hard inquiry. The drop is usually five to ten points and recovers within a few months. If you explore with multiple lenders within a short window (two weeks), the inquiries typically count as one inquiry for scoring purposes, so shop around without worrying about multiple hits.

Can I refinance if I'm behind on my current car loan?

Most lenders will not refinance if you are currently behind on payments. You will need to bring your account current first. Some credit unions and online lenders are more flexible if you're only one or two payments behind, so it's worth asking, but expect most to decline.

What if my car is worth less than what I owe?

Being underwater on your loan makes refinancing harder but not impossible. Credit unions and some online lenders will refinance even if you owe more than the car is worth, though your interest rate will be higher. Banks are usually stricter about this. Call a few lenders and ask about their loan-to-value limits before you explore.

How long does the whole process take from process to funding?

Online lenders typically fund within one to three business days after approval. Banks usually take five to ten business days for approval and another week for funding. Credit unions fall somewhere in between, usually three to seven business days total. The payoff of your old loan happens after funding and can take another three to seven days.

Do I need to tell my current lender I'm refinancing?

You do not need to notify your current lender in advance. The new lender will contact them directly to arrange the payoff. However, it's a good idea to call your current lender once you're approved and let them know a payoff is coming, so they don't send you a late notice during the transition period.