APR vs Interest Rate: What Is the Difference?
The interest rate on a loan is the cost of borrowing the principal itself; APR (annual percentage rate) is that rate plus certain lender fees and costs, restated as a single yearly percentage. Because APR folds those extra costs into one number, it is designed to make loan offers comparable, and it is almost always equal to or higher than the interest rate.
APR vs Interest Rate at a glance
| Aspect | APR | Interest Rate |
|---|---|---|
| What it measures | The yearly cost of the loan, including certain fees | The cost of borrowing the principal |
| Includes lender fees | Yes, such as origination charges and some closing costs | No |
| Sets the monthly payment | No | Yes |
| Main purpose | Making loan offers comparable | Calculating the interest portion of each payment |
| Relative size | Equal to or higher than the rate | The lower of the two numbers |
| Where it appears | Required federal loan disclosures | The loan note and payment math |
How they differ in practice
The interest rate answers a narrow question: what does it cost to borrow the principal? It is the percentage a lender applies to the outstanding balance to calculate the interest portion of each payment. APR answers a broader one: what does the loan cost per year once certain lender fees, origination charges, and some closing costs are included? United States disclosure rules require lenders to present both figures, so a borrower sees the payment-setting rate and the fuller annual cost side by side.
That gap is why the mortgage APR vs interest rate comparison exists. Two loans can carry the identical interest rate yet different APRs, because one lender charges more in upfront fees; the loan with the lower APR carries lower included costs measured over the full term. The two numbers converge only when a loan has essentially no included fees, which is why the APR vs interest rate spread on a typical mortgage is small but rarely zero.
Full definitions
Read the complete dictionary entry for Annual Percentage Rate (APR) or Interest Rate.
Frequently asked questions
Why is the APR higher than the interest rate?
APR starts with the interest rate and layers in certain lender fees, such as origination charges and some closing costs, then expresses the combined cost as one yearly percentage. Because it counts more costs than the rate alone, the APR on a mortgage is almost always the higher figure.
Can the APR equal the interest rate?
Yes. When a loan carries no fees that are included in the APR calculation, the two numbers match. That outcome is more common on simple loan products than on mortgages, where origination and other included costs usually push the APR above the rate.
Why do lenders disclose two different numbers?
Each number does a different job. The interest rate determines the monthly payment, while the APR standardizes the total yearly cost so offers with different fee structures can be compared on a single figure. Federal disclosure rules require both so that neither part of the picture is hidden.