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APR vs interest rate on a car loan

These two terms get used interchangeably, but they are not the same. Knowing the difference helps you compare loan offers fairly.

Interest rate

The interest rate is the cost of borrowing the principal, expressed as a yearly percentage. It is what the amortization math in our calculator uses to work out your monthly payment.

APR (annual percentage rate)

APR includes the interest rate plus certain lender fees, expressed as a single yearly percentage. Because it captures more of the true cost, APR is usually slightly higher than the plain interest rate.

Why it matters

When you compare two loan offers, comparing APRs is fairer than comparing interest rates, because APR reflects fees one lender might charge and another might not. A loan with a lower rate but high fees can end up more expensive than one with a slightly higher rate and no fees.

What affects the rate you get

Credit score — the single biggest factor.
Loan term — longer terms often carry higher rates.
New vs used — used cars usually cost more to finance; see new vs used car loans.
Down payment — more down can mean a better rate.

Compare offers: plug each APR into the calculator to see the real difference in monthly payment and total interest.

General information, not financial advice.