APR vs. Interest Rate: What's the Difference?
These two numbers look similar but tell you very different things about a loan. Understanding the gap can save you hundreds or thousands of dollars.
The interest rate is the cost of borrowing money
Your interest rate is the percentage a lender charges you each year on the principal — the amount you borrow. It's the raw cost of the money, before any fees.
The APR includes the fees
The annual percentage rate (APR) wraps the interest rate plus most upfront fees (like origination fees) into a single yearly figure. That's why APR is almost always higher than the interest rate, and why it's the better number to use when you compare loans.
A quick example
Imagine two $10,000 loans, both repaid over 36 months:
- Loan A: 10% interest rate, no fees → APR 10%.
- Loan B: 9% interest rate, 5% origination fee → APR roughly 13.5%.
Loan B has the lower interest rate, but Loan A is cheaper because of the fee. The APR makes that obvious.
When to use which
- Use APR to compare offers apples-to-apples.
- Use the interest rate to understand the raw cost of the money and to calculate interest accrual.
Bottom line
Always compare APRs, not interest rates, when you're shopping for a personal loan. Then plug the APR into a calculator to see exactly what you'll pay each month.
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