There is no single "best" company because the right lender depends on your credit score, how much you owe, and what rate you can actually get

When you refinance a car loan, you're replacing your current loan with a new one from a different lender. The goal is usually to lower your monthly payment, reduce the interest rate, or shorten the loan term. But the lender that offers the lowest rate to someone with excellent credit won't be the same lender that works best for someone rebuilding credit — and rates change weekly, sometimes daily.

Instead of looking for one "best" company, you'll want to check rates from multiple lenders in your situation. Banks, credit unions, online lenders, and your current auto lender all refinance car loans, and each has different strengths. A credit union might offer lower rates to members but require you to join first. An online lender might approve you faster but charge more interest. Your current lender might waive fees but offer a higher rate than competitors.

The actual best choice for you is whichever lender gives you the lowest total cost over the life of the loan — and you won't know that without getting real quotes.

Key Takeaways

  • Banks, credit unions, and online lenders all refinance car loans, and rates vary significantly between them and change frequently, so comparing quotes from at least three lenders is necessary to find your best option.
  • Your credit score is the single biggest factor determining which lenders will approve you and what rate you'll receive, so checking your score before you start shopping prevents wasted applications.
  • Getting a rate quote does not require a hard credit pull at most lenders — many offer soft quotes that don't affect your score, so you can shop without penalty.
  • The lowest monthly payment isn't always the best deal; a longer loan term lowers payments but costs more in total interest, so compare the full loan cost, not just the payment amount.
  • Refinancing makes sense only if the new rate is at least 0.5 to 1 percentage point lower than your current rate and you plan to keep the car long enough to recoup any fees.

Where to get quotes: banks, credit unions, and online lenders

Banks refinance car loans through their auto lending departments. Most major banks (Wells Fargo, Chase, Bank of America) offer refinancing, and you may get a small rate discount if you already bank there. Banks typically require a minimum credit score in the 620 to 660 range, though better rates go to borrowers with scores above 700. The process process is straightforward but can take several business days.

Credit unions often offer the lowest rates available, sometimes 1 to 2 percentage points lower than banks. However, you must be a member to refinance with them. Some credit unions have open membership (anyone can join), while others require you to work in a specific industry or live in a specific area. If you're already a member of a credit union, check their rates first — they're worth comparing even if the rate isn't the absolute lowest, because credit unions sometimes waive fees that other lenders charge.

Online lenders (LendingClub, Upgrade, SoFi, Lightstream) approve and fund loans quickly, sometimes in one to three business days. They work with a wider range of credit scores than traditional banks, including people with fair or poor credit. The tradeoff is that rates for lower credit scores can be higher than what a bank would charge someone with excellent credit. Online lenders are worth checking if you have fair credit or need fast funding.

Your current auto lender (the bank or finance company that holds your current loan) can refinance you into a new loan with them. They already know your payment history and may waive certain fees. However, they have no reason to offer you a competitive rate — they already have your business — so always compare their offer against at least two other lenders before accepting.

How your credit score shapes which lenders will work with you

Your credit score determines two things: whether a lender will approve you at all, and what interest rate they'll offer. Most lenders publish minimum credit score requirements, though the actual cutoff can vary slightly based on other factors like income and how much you owe on the car.

If your score is below 620, traditional banks and credit unions are unlikely to approve you. Online lenders and some finance companies will still work with you, but expect higher rates — sometimes 2 to 4 percentage points above what someone with excellent credit would pay. Before you explore anywhere, check your credit score through a free service like AnnualCreditReport.com (the official government site) or through your bank or credit card company, which often provide free scores. Knowing your score prevents you from wasting time on lenders that won't approve you.

When you get a rate quote, ask whether the lender is doing a soft inquiry or a hard inquiry. A soft inquiry doesn't affect your credit score. A hard inquiry (also called a hard pull) temporarily lowers your score by a few points. Most lenders offer soft quotes upfront — you provide basic information and get an estimated rate without any credit check. Once you're ready to move forward, they do a hard pull to finalize the rate. Shopping around with soft quotes first means you can compare multiple lenders without damage to your score.

What to compare beyond the interest rate

The interest rate matters, but it's not the only number that determines whether refinancing saves you money. You also need to look at the loan term (how many months you have to repay), any fees, and the total amount you'll pay over the life of the loan.

A longer loan term lowers your monthly payment but increases the total interest you pay. For example, refinancing from a 60-month loan at 6% into a 72-month loan at 4% might lower your payment by $50 per month, but you'll pay an extra $1,000 in interest overall because you're borrowing for 12 extra months. Before you accept a lower payment, calculate the total cost: multiply your monthly payment by the number of months, then add any fees. Compare that total to what you'd pay if you kept your current loan.

Fees vary by lender. Some charge an origination fee (typically 0.5% to 1% of the loan amount), a prepayment penalty if you pay off the loan early, or a documentation fee. Others charge no fees at all. A lender with a slightly higher rate but no fees might cost you less overall than a lender with a lower rate but a $500 origination fee. Ask each lender for a complete list of fees before you decide.

When refinancing actually saves you money

Refinancing only makes financial sense if the new loan costs less than your current loan over the time you'll actually keep the car. The most important factor is the interest rate: if the new rate is at least 0.5 to 1 percentage point lower than your current rate, refinancing is usually worth exploring. If the new rate is only 0.25 percentage points lower, the savings might not cover the fees and the time spent explore.

You also need to plan to keep the car long enough to recoup any fees. If you're charged a $300 origination fee and your monthly savings is $25, you need to keep the car for at least 12 months just to break even. If you think you'll sell or trade the car within a year, refinancing probably isn't worth it.

Finally, refinancing makes less sense if you're already deep into your current loan. If you're in year four of a five-year loan, refinancing into a new five-year loan extends your payments by four more years, even if the rate is lower. In that situation, you might be better off just finishing your current loan.

The steps to compare and explore

Start by gathering information about your current loan: the current balance, the interest rate, the monthly payment, and the number of months remaining. You'll need this when you get quotes from other lenders.

Next, get soft quotes from at least three lenders. Visit their websites or call and provide basic information — your credit score range, the car's year and mileage, and the loan amount you need. Write down the estimated rate, term, monthly payment, and any fees mentioned. This step takes about 15 minutes per lender and doesn't affect your credit score.

Once you've narrowed it down to one or two lenders with the best terms, you can move forward with a formal process. This is when they'll do a hard credit pull and verify your income and employment. Have your driver's license, proof of income (recent pay stubs or tax returns), and proof of insurance ready. The lender will also need the vehicle identification number (VIN) and details about your current loan.

After approval, the new lender will contact your current lender to pay off the old loan. You'll sign documents for the new loan, and the funds go directly to your old lender. You don't handle the payoff yourself. From process to funding typically takes one to two weeks, though online lenders can be faster.

Red flags and common mistakes

Don't explore with every lender at once. Multiple hard inquiries in a short time can lower your score and make you look desperate to lenders. Space out your applications by a few days, or use soft quotes to narrow down your choices before doing hard pulls.

Avoid lenders that may provide approval or promise a specific rate without checking your credit. No legitimate lender can may provide approval, and anyone who does is likely running a scam or will charge you predatory rates.

Don't assume the lowest payment is the best deal. A 72-month loan at 3% might have a lower payment than a 60-month loan at 2.5%, but you'll pay significantly more in total interest. Always calculate the total cost of the loan, not just the monthly payment.

Be cautious about refinancing if you're underwater on your current loan (you owe more than the car is worth). Some lenders will refinance you anyway, but they'll roll the negative equity into the new loan, which means you'll owe even more. This can trap you in a cycle of owing more than the car is worth.

Frequently Asked Questions

How much will refinancing lower my payment?

That depends on the new interest rate, the loan term, and how much you still owe. If you refinance from 7% to 4% on a $20,000 balance, your payment might drop by $100 to $150 per month — but if you extend the loan term, the savings could be smaller. Get quotes from actual lenders to see real numbers for your situation.

Can I refinance if I have bad credit?

Yes, but you'll pay a higher interest rate than someone with good credit. Online lenders and some finance companies work with credit scores as low as 580 to 600. Refinancing with bad credit only makes sense if the new rate is significantly lower than your current rate, which is rare. You might be better off waiting to refinance once your credit improves.

What happens to my current loan when I refinance?

The new lender pays off your old loan in full, and you start making payments to the new lender instead. You don't have two loans at once. The payoff happens automatically — the new lender handles contacting your old lender and sending the money.

How long does refinancing take?

From process to funding usually takes one to two weeks. Online lenders can sometimes fund in three to five business days. The timeline depends on how quickly you provide documents and how busy the lender is. Ask the lender for an estimated timeline when you explore.

Is there a penalty for paying off my current loan early?

Some car loans include a prepayment penalty, but many don't. Check your current loan documents or call your lender and ask. If there's a penalty, factor it into your refinancing decision — the penalty cost might outweigh the interest savings from refinancing.