APR vs Interest Rate: What a Lender Is Actually Telling You

When you compare loan offers, you will see two percentages that look interchangeable and are not. Understanding the gap between them is the difference between comparing offers properly and being surprised at closing.

The interest rate is the cost of the money

The interest rate is what the lender charges on the principal. It is what drives your payment schedule, and it is the number that goes into an amortisation calculation.

If you borrow $20,000 at 6.5% over five years, that 6.5% is what your monthly payment is built from.

The APR is the cost of the loan

The annual percentage rate is broader. It expresses the interest rate plus certain fees as a single yearly percentage, so that two offers with different fee structures can be compared on one number.

Which fees are included depends on the loan type, but typically origination fees, some closing costs, and other charges required to get the loan are rolled in. Fees you could avoid, or that are not a condition of the loan, generally are not.

This is why the APR on an offer is usually higher than the interest rate. If they are identical, that usually means the loan has no fees included in the calculation.

Why this changes which loan is cheaper

Consider two $20,000 five-year personal loans:

Loan A: 6.5% interest rate, no origination fee
Loan B: 6.2% interest rate, 3% origination fee ($600)

Loan B advertises the lower rate. But you receive $19,400 and repay as though you borrowed $20,000, so its APR lands above Loan A's. The headline number points one way and the actual cost points the other.

The APR exists precisely to catch this. Comparing loans on interest rate alone rewards the lender who moves cost from the rate into the fees.

Where APR gets less useful

APR assumes you hold the loan for its full term. That assumption does most of the work, and it breaks in two common situations.

If you repay early, the fees were still paid in full but spread over fewer years, so your effective cost is higher than the advertised APR. A loan with high fees and a low rate is a bad deal for someone who plans to repay early.

If the rate is variable, the APR is calculated on current rates. It tells you nothing certain about what you will pay after the rate moves.

For mortgages this matters a great deal, because most people do not hold a mortgage for its full term. A low-rate, high-fee mortgage compared on APR can look better than it will turn out to be.

How to compare properly

Ask for the APR on every offer, and check the rate and the fee schedule separately as well
Work out the total amount repaid over the term you realistically expect, not the full term
Check whether there is a prepayment penalty, which changes the maths entirely if you intend to clear it early
Compare like terms. A five-year and a seven-year loan at the same APR are not equivalent; the longer one costs more in total interest even though the monthly payment is smaller

Our loan calculator shows the total interest and the amortisation schedule for a given rate and term, which is the clearest way to see what a difference in either actually costs.

The short version

The interest rate tells you what the money costs. The APR tries to tell you what the loan costs. Neither tells you what your loan will cost unless the assumptions behind the APR match what you actually intend to do.

Sources

Current as of August 2026. Rates and fees shown are illustrative examples, not offers.