What determines your interest rate
Your interest rate is set by the lender based on how risky they think lending to you is. The lender looks at your credit score, the size of your down payment, how long you want to borrow for, the car's age and value, and current market rates. A higher credit score usually means a lower rate. A larger down payment also lowers your rate because you're borrowing less money relative to what the car is worth. The loan term matters too — a 36-month loan typically has a lower rate than a 72-month loan for the same borrower.
Different lenders set rates differently. A bank, credit union, or car dealership's finance department will each look at the same information about you but may reach different conclusions about risk. This is why shopping around for rates before you buy is important — the difference between a 4% rate and a 7% rate costs you thousands of dollars over the life of the loan.
Key Takeaways
- Your credit score is the single biggest factor lenders use to set your rate, with scores above 740 typically receiving the best offers.
- The size of your down payment affects your rate because a larger down payment means the lender is risking less money.
- Loan length, the car's age, current market conditions, and the type of lender all influence the final rate you receive.
- You can see what rate you might receive by getting pre-approved through a bank or credit union before visiting a dealership.
How credit score affects your rate
Your credit score is the number lenders use most heavily when setting your rate. Credit scores range from 300 to 850, and they're built from your payment history, how much debt you're carrying, how long you've had credit accounts open, and how many times you've recently applied for credit. Lenders typically have rate brackets — for example, borrowers with scores of 740 and above might get one rate, borrowers with scores between 700 and 739 might get a different rate, and so on.
If your score is lower, you'll see a noticeably higher rate. A borrower with a score of 620 might be offered 8% or 9%, while a borrower with a score of 760 might be offered 3% or 4% for the same car and loan length. The difference adds up fast. On a $25,000 loan over 60 months, the difference between 4% and 8% is roughly $2,500 in extra interest paid.
You can check your own credit score for free through AnnualCreditReport.com, which is the official site for the three major credit bureaus. Knowing your score before you shop for a car loan lets you understand what rate range to expect and whether it makes sense to wait and work on improving your score before borrowing.
The role of your down payment
Your down payment is the cash you put toward the car upfront. The larger your down payment, the less money you need to borrow, and the lower your interest rate will typically be. A lender sees a bigger down payment as a sign that you're serious about the purchase and have skin in the game — if the car loses value, you've already absorbed some of that loss yourself.
Down payments are usually expressed as a percentage of the car's price. A 20% down payment is considered standard and usually gets you the best rate. A 10% down payment is common but may result in a slightly higher rate. A down payment of 5% or less often triggers a noticeably higher rate, and some lenders won't lend at all if your down payment is below a certain threshold.
Loan length and how it changes your rate
The length of your loan — called the term — affects your interest rate. Shorter loans (36 to 48 months) typically have lower rates than longer loans (60 to 84 months). This is because the lender is taking on less risk over a shorter period. The car is also less likely to need major repairs or become worthless before the loan is paid off.
However, a longer loan means lower monthly payments even though your total interest paid is higher. A 36-month loan at 4% costs less in total interest than a 60-month loan at 5%, but your monthly payment on the 36-month loan is higher. When you're comparing rates from different lenders, always look at the total interest you'll pay, not just the monthly payment.
The car's age and condition
Whether you're buying a new car or a used one affects your rate. New cars typically get lower rates because they're less likely to break down during the loan period. Used cars get higher rates, and the older the car, the higher the rate tends to be. A car that's 10 years old will usually have a higher rate than a car that's 3 years old.
The car's condition and mileage matter too. A used car with 40,000 miles in good condition might get a better rate than one with 120,000 miles. Some lenders won't finance cars older than a certain age — often 10 to 15 years — or with mileage above a certain threshold, usually 100,000 to 150,000 miles. If you're buying a used car, ask the lender about their age and mileage limits before you fall in love with a specific vehicle.
Market rates and timing
Interest rates for car loans move up and down based on broader economic conditions. When the Federal Reserve raises its benchmark interest rate, car loan rates typically rise. When the Fed lowers rates, car loan rates usually fall. These changes happen over weeks and months, not overnight, but they do affect what rate you'll be offered.
You can't control the broader market, but you can control when you shop. If rates are rising, locking in a rate sooner rather than later might save you money. If rates are falling, waiting a few weeks might get you a better offer. Checking rates from multiple lenders over a week or two gives you a sense of whether rates are moving and how your own situation compares to what's being offered.
Getting pre-approved to see your actual rate
The best way to understand what rate you'll actually receive is to get pre-approved through a bank or credit union. Pre-approval means a lender has looked at your credit and finances and told you what rate and loan amount they're willing to offer. This is different from a rate quote, which is an estimate. Pre-approval is specific to you.
You can get pre-approved at your bank, a credit union, or online lenders without visiting a dealership. The process usually takes a few days and involves submitting proof of income, employment, and identity. Once you have pre-approval from one or more lenders, you know what rate you may have access to for and can compare it to what the dealership offers. Many people find that getting pre-approved before shopping gives them better negotiating power at the dealership because they know their walk-away number.
Frequently Asked Questions
Can I negotiate my interest rate after the dealership offers it?
Yes. If you have pre-approval from another lender at a lower rate, you can show that to the dealership and ask them to match it or come close. Dealerships sometimes have room to adjust rates, especially if you're a strong borrower. However, the dealership's rate is often competitive because they work with multiple lenders and can shop your process around.
Does explore for a car loan hurt my credit score?
A single process causes a small, temporary dip in your score — usually 5 to 10 points. Multiple applications within a short period (typically two weeks) usually count as one inquiry, so shopping around for rates doesn't hurt as much as you might think. The impact fades within a few months as long as you don't open new accounts or miss payments.
What's the difference between APR and interest rate?
The interest rate is the percentage of the loan amount you pay in interest each year. The APR (annual percentage rate) includes the interest rate plus any fees the lender charges, expressed as a yearly rate. When comparing loans, always compare APRs, not just interest rates, because the APR tells you the true cost of borrowing.
If I have bad credit, should I still shop around for rates?
Yes. Even with a lower credit score, different lenders will offer different rates. The difference might be smaller than it is for borrowers with excellent credit, but it can still add up to hundreds of dollars over the life of the loan. Getting pre-approved at a credit union or online lender sometimes results in a better rate than what a dealership offers.