What a new car refinance rate is and why it matters

A refinance rate is the interest rate a lender charges when you replace your existing car loan with a new one. You keep the same car, but you borrow money from a different lender (or the same lender) to pay off what you still owe. The new rate determines how much interest you pay over the life of the new loan.

The reason people refinance is usually to lower their monthly payment or reduce the total interest they pay. If you got your original loan when your credit score was lower, or if market rates have dropped since you bought the car, refinancing might save you money. The difference between a 6% rate and a 4% rate on a $20,000 loan over five years is real money in your pocket each month.

Your refinance rate is not set by any government agency or standard formula. Banks, credit unions, and online lenders each decide their own rates based on what they think the risk is of lending to you. That is why the same person can get offered different rates from different lenders on the same day.

Key Takeaways

  • Refinance rates depend mainly on your credit score, the age and mileage of your car, how much you still owe, and what the broader lending market is doing.
  • Credit unions often offer lower rates than banks, and online lenders often offer rates between the two, though this varies by lender and your situation.
  • The older your car or the more miles it has, the higher your rate is likely to be, because the car is worth less as collateral.
  • You can see what rate a lender might offer without hurting your credit score by asking for a soft inquiry, which does not show up on your credit report.
  • Refinancing makes the most sense if your new rate is at least 1 to 2 percentage points lower than your current rate, because closing costs and the time to break even matter.

How your credit score shapes the rate you are offered

Your credit score is the single biggest factor in what rate you get. Lenders use your score to guess how likely you are to pay them back on time. A higher score means lower risk to them, so they offer a lower rate. A lower score means higher risk, so the rate goes up.

The difference is substantial. Someone with a score of 750 or above might get offered 4.5%, while someone with a score of 600 to 649 might be offered 8% or higher for the same car and loan amount. That gap widens the longer the loan runs.

If your score has improved since you took out your original loan, refinancing can be worth doing just for that reason. You can check your own credit score for free through AnnualCreditReport.com, which is the official site run by the three major credit bureaus. Knowing your score before you contact a lender helps you understand what range of rates to expect.

The age, mileage, and value of your car

Lenders care about your car because it is the collateral for the loan — if you stop paying, they can repossess it and sell it to recover their money. The newer the car and the fewer miles it has, the more it is worth, and the safer the lender feels. A car worth $15,000 is better collateral than a car worth $8,000.

Most lenders will not refinance a car that is more than 10 years old or has more than 150,000 miles, though these limits vary. Some will go higher if the car is in good condition or if you are putting down a large payment. If your car is older or has high mileage, you may find fewer lenders willing to work with you, and those who do may charge a higher rate.

You can get a rough idea of what your car is worth by checking Kelley Blue Book or NADA Guides, both free online. If you owe more than the car is worth (called being "underwater" on the loan), some lenders will still refinance you, but others will not, and those who do may charge more.

How much you still owe versus what the car is worth

Lenders look at the loan-to-value ratio, which is how much you owe divided by what the car is worth. If you owe $12,000 and the car is worth $15,000, your ratio is 80%, which is considered safe. If you owe $12,000 and the car is worth $10,000, your ratio is 120%, which means you are underwater.

A lower ratio (meaning you owe less relative to the car's value) usually gets you a better rate. If you are underwater, refinancing is harder. Some lenders will do it, but they may charge a higher rate or require you to pay the difference upfront. Others will not refinance you at all until you are right-side-up on the loan.

The longer you have been paying your original loan, the lower you owe, which improves your ratio over time. If you are only a year or two into a six-year loan, you may still be underwater even if you have been making payments on time.

Market rates and what lenders are offering right now

Refinance rates move with the broader economy and what the Federal Reserve does with interest rates. When the Fed raises its benchmark rate, lenders typically raise their rates too. When the Fed lowers rates, lenders usually follow. This happens over weeks or months, not overnight.

You cannot control what the market is doing, but you can shop around to find which lender is offering the best rate on any given day. Rates can vary by half a percentage point or more between lenders, even for the same person. That is why getting quotes from multiple places — banks, credit unions, and online lenders — matters.

Credit unions often have lower rates than banks because they are nonprofit and return profits to members. Online lenders often fall in the middle. But this is not a rule; it depends on the specific lender and your situation. The only way to know is to ask.

Loan term and how it affects your rate

The length of your new loan — whether you choose 36 months, 48 months, 60 months, or longer — can affect your rate. Shorter loans usually come with lower rates because the lender has less time to worry about something going wrong. Longer loans usually come with higher rates.

But a longer loan also means a lower monthly payment, even if the rate is slightly higher. The tradeoff is that you pay more interest overall. If you refinance a $15,000 loan from 60 months at 5% to 72 months at 5.25%, your payment drops, but you pay more in total interest because you are borrowing for longer.

When you are comparing offers from different lenders, make sure you are comparing the same loan term. A 48-month loan at 4.5% is not the same deal as a 60-month loan at 4.5%, even though the rate looks the same.

Where to get rate quotes and what to ask for

You can get refinance rate quotes from banks, credit unions, and online lenders. Banks are what most people think of first — Chase, Bank of America, Wells Fargo — but they often have higher rates than credit unions. Credit unions are membership organizations; you may be able to join through your employer, your school, or your community. Online lenders like LendingClub, Upgrade, and others let you explore entirely online.

When you contact a lender, ask for a soft inquiry first. This is a quote that does not show up on your credit report and does not hurt your score. Once you have soft quotes from a few places, you can decide which lender to work with. When you formally explore, they will do a hard inquiry, which does show on your report. Multiple hard inquiries in a short time (usually within 14 to 45 days, depending on the credit bureau) count as one inquiry for scoring purposes, so shopping around does not tank your score if you do it quickly.

Ask each lender for the interest rate, the monthly payment, the total interest you will pay over the life of the loan, and any fees (origination fee, prepayment penalty, closing costs). Some lenders charge nothing; others charge a few hundred dollars. These fees matter when you are deciding whether refinancing actually saves you money.

When refinancing makes financial sense

Refinancing is worth doing if your new rate is at least 1 to 2 percentage points lower than your current rate. The bigger the drop, the faster you break even on any fees and start saving money. If you are only dropping 0.5 percentage points, the savings may not be worth the time and paperwork.

You also need to think about how long you plan to keep the car. If you are refinancing into a 60-month loan but you plan to sell the car in two years, you will not have time to recoup your costs. Use an online refinance calculator to see how many months it takes to break even, then compare that to how long you plan to own the car.

Refinancing also makes sense if you need to lower your monthly payment because your budget has tightened, even if the total interest you pay goes up slightly. That is a personal choice based on your situation, not a math problem.

Frequently Asked Questions

Will refinancing hurt my credit score?

A hard inquiry will lower your score by a few points temporarily, usually 5 to 10 points. The impact fades over a few months. Opening a new loan account also lowers your score slightly at first because it is new. But if you make payments on time, your score recovers and usually ends up higher than before because you are paying down debt.

Can I refinance if I am behind on payments?

Most lenders will not refinance you if you have missed payments in the last few months. Some will work with you if you have caught up and can show a few months of on-time payments. Call lenders and ask; policies vary. Refinancing when you are behind is harder, but not impossible.

What if my current lender will not let me refinance with someone else?

Your current lender cannot stop you from refinancing with another lender. When you refinance, the new lender pays off your old loan in full, and you owe them instead. Your old lender has no say in the matter. You own the car; you can refinance it whenever you want.

How long does a refinance take from start to finish?

Most refinances take 7 to 14 days from the time you formally explore to the time the new lender pays off your old loan and you start making payments to them. Some online lenders are faster. You will need to provide pay stubs, proof of insurance, and the vehicle identification number (VIN).

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

Some car loans have a prepayment penalty, which is a fee you pay if you pay off the loan before the term ends. Check your original loan documents to see if yours does. If it does, factor that fee into whether refinancing saves you money. Many loans have no prepayment penalty at all.