APR vs Interest Rate: What's the Difference?
They sound the same but they aren't. Knowing the difference is how you actually compare loan offers apples-to-apples.
Last updated: 2026-07-20
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When you shop for a loan you'll see two numbers: the interest rate and the APR. They're related but distinct, and confusing them can cost you money.
Interest rate
The interest rate is the cost of borrowing the principal, expressed as a yearly percentage. It determines your base monthly payment but ignores fees.
APR
The APR (annual percentage rate) folds in most of the loan's fees — origination, points, some closing costs — on top of the interest. That makes it a fuller picture of the true yearly cost, and it's usually a little higher than the interest rate.
How to use them
- Compare APRs across offers to judge total cost, not just the headline rate.
- Two loans with the same rate can have very different APRs if one has heavy fees.
- For very short holding periods, a low rate with high fees can still be cheaper — but APR assumes you keep the loan to term.
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Key terms
This guide is educational and is not financial, tax, or legal advice. Figures from linked calculators are estimates.