How car refinance rates work

When you refinance a car loan, you are replacing your existing loan with a new one from a different lender. The interest rate on that new loan depends on what the lender sees as your risk — your credit score, how much you still owe compared to the car's value, how long you want to borrow for, and the current market rate for auto loans. A lender will not offer you the same rate they advertise to someone with perfect credit and a newer car.

The rate you actually receive is built from two pieces: the base rate the lender sets based on market conditions (which changes daily), and the risk adjustment they add or subtract based on your individual situation. If you have a credit score above 750 and owe less than the car is worth, you might get close to the advertised rate. If your score is lower or you are underwater on the loan, the lender will charge you more.

Refinancing makes sense only if your new rate is lower than what you are currently paying. The catch is that you will pay closing costs — typically $50 to $300 — and you will restart the loan term, which means you might pay more interest overall even with a lower rate. Run the numbers before you commit.

Key Takeaways

  • Your refinance rate depends on your credit score, how much you owe versus what the car is worth, current market rates, and the loan term you choose.
  • Lenders pull your credit report when you explore, which causes a small temporary dip in your score; multiple applications within two weeks usually count as one inquiry.
  • You will pay closing costs of $50 to $300, so refinancing only saves money if your new rate is at least 0.5 to 1 percentage point lower than your current rate.
  • The best time to refinance is when market rates drop, when your credit score has improved since you took out the original loan, or when you have paid down the loan enough to be above water on the car's value.
  • Credit unions and online lenders often offer lower rates than banks, but you need to shop multiple lenders to find the best offer for your situation.

What lenders look at when setting your rate

Credit score is the single largest factor. Lenders use your FICO score (the most common model for auto loans), which ranges from 300 to 850. A score above 750 typically qualifies for the best rates; a score between 650 and 750 will see a noticeable increase; below 650, rates jump significantly. If your score has improved since you took out the original loan, refinancing can save you money.

Loan-to-value ratio (LTV) is what you owe divided by what the car is currently worth. If you owe $15,000 and the car is worth $18,000, your LTV is 83 percent. Lenders prefer an LTV below 100 percent (meaning you are not underwater). If you are underwater, some lenders will still refinance you, but they will charge a higher rate or require you to pay the difference upfront. The newer the car and the less you owe, the better your LTV looks.

Loan term — how many months you want to borrow for — affects your rate. A 36-month loan usually has a lower rate than a 60-month loan because the lender's risk is shorter. However, a longer term means lower monthly payments, so you have to choose between a better rate and a payment you can afford.

Market rates change daily based on the Federal Reserve's actions and overall economic conditions. When the Fed raises rates, auto loan rates rise across the board. When rates fall, that is the time to refinance if you have been waiting. You can check current average rates on sites like Bankrate or Edmunds to see where the market stands, though the rate you personally receive will be higher or lower based on your credit and car.

Where to shop for refinance rates

Banks, credit unions, and online lenders all offer car refinances, and their rates vary. Credit unions often have lower rates than banks because they are member-owned and have lower overhead. Online lenders like LendingClub, Upgrade, and SoFi can move quickly and sometimes offer competitive rates, though not all of them work with used cars or cars with high mileage.

You should get quotes from at least three lenders before deciding. When you request a quote, the lender will do a hard inquiry on your credit, which causes a small dip in your score (usually 5 to 10 points). The good news is that multiple hard inquiries for the same type of loan within 14 days typically count as a single inquiry for scoring purposes, so shop around without fear of repeated damage to your score.

Bring your current loan documents to each lender so they can see exactly what you owe and what your current rate is. They will also need the vehicle identification number (VIN) to look up the car's current market value. Some lenders will give you a rate quote without pulling your credit (a soft inquiry), which does not affect your score, but the final rate will only be confirmed after the hard pull.

When refinancing saves you money

Refinancing is worth doing if your new rate is at least 0.5 to 1 percentage point lower than your current rate. Here is why: if you refinance a $15,000 loan at 0.5 percent lower for 48 months, you save roughly $150 in interest, but closing costs eat most of that. At 1 percent lower, you save around $300, which covers closing costs and leaves you ahead.

The math also depends on how long you plan to keep the car and how much time is left on your current loan. If you have only 12 months left and you refinance for 48 months, you are extending the loan and paying more interest overall, even with a lower rate. If you have 48 months left and refinance for 36 months at a lower rate, you pay off the car faster and save significantly.

Use a refinance calculator (available free on most lender websites) to compare your current loan against the new offer. Enter your current balance, rate, and remaining term, then enter the new rate and term the lender quoted. The calculator will show you the total interest you will pay under each scenario and whether refinancing actually saves money.

How to prepare your process

Before you explore, gather your current loan paperwork, your car's title or registration, and your most recent pay stub and bank statement. Lenders want to confirm you still have income and that you are not in financial distress. You will also need the VIN from your registration or the car itself.

Check your credit report for errors before you explore. You can get a free report once per year from AnnualCreditReport.com (the official site run by the three major credit bureaus). If you spot a mistake — a late payment that was not yours, an account you did not open — dispute it with the bureau. Fixing errors can raise your score by 10 to 50 points, which could lower your refinance rate.

If your credit score is lower than you would like, you have options. Paying down other debts (especially credit cards) can raise your score in a few weeks. Waiting a few months for negative items to age also helps. If you can wait, that might be worth more than refinancing right now at a higher rate.

What happens after you are approved

Once you are approved, the new lender will contact your current lender to request a payoff quote — the exact amount you owe as of a specific date. The new lender will then pay off your old loan and send you new loan documents. You will sign these documents (usually electronically or by mail) and make your first payment to the new lender on the date they specify.

Your car's title will be transferred to the new lender as collateral. This is normal and does not affect your ownership; once you pay off the new loan, the lender will release the title to you. The whole process typically takes 7 to 14 days from approval to funding.

During this time, keep making payments on your old loan as scheduled. Do not stop paying just because you have been approved for refinancing. If the payoff takes longer than expected and you miss a payment on the old loan, it will damage your credit score and could derail the refinance.

Frequently Asked Questions

Will refinancing hurt my credit score?

Yes, but only temporarily. The hard inquiry lowers your score by a few points, and opening a new account also causes a small dip. However, if you make on-time payments on the new loan, your score will recover within a few months. The long-term benefit of a lower interest rate usually outweighs the short-term hit.

Can I refinance if I am underwater on my car loan?

Some lenders will refinance you if you are underwater, but they will charge a higher rate or require you to pay the difference upfront. A few credit unions and online lenders specialize in underwater refinances. Your best option is to wait until you have paid down the loan enough to be above water, or to shop lenders that accept higher LTVs.

How long does the refinance process take?

From process to funding usually takes 7 to 14 days. Getting approved can happen in hours or days, but the payoff and title transfer take time. Some online lenders move faster than banks. If you need the refinance quickly, ask the lender for their typical timeline before you explore.

What if my current lender charges a prepayment penalty?

Some loans include a prepayment penalty if you pay off the loan early. Check your loan documents or call your lender to ask. If there is a penalty, factor it into your refinance calculation — it might still be worth it if the new rate is low enough, but it reduces your savings.

Should I refinance if I only have a few months left on my loan?

Usually no. If you have fewer than 12 months remaining, the interest you will pay is small, and closing costs will eat up most of your savings. It makes more sense to finish paying off the current loan and then refinance your next car if rates are favorable.