APR vs Interest Rate: What's the Difference?
Last updated: June 2026
The interest rate is only part of the cost
The interest rate tells you how much a lender charges for the money you borrow, expressed as a yearly percentage of the balance. It's the number lenders advertise most loudly because it's usually the lowest figure they can quote. But it ignores the fees that often come with a loan — origination charges, points, and processing costs.
APR (Annual Percentage Rate) folds those fees into a single annual figure. Because the fees are paid up front but spread across the life of the loan, APR is always equal to or higher than the interest rate. That makes it the fairer number for comparing two offers.
A worked example
Suppose two lenders both offer a $200,000, 30-year mortgage:
- Lender A: 6.00% rate, $1,000 in fees → APR ≈ 6.04%.
- Lender B: 5.875% rate, $6,000 in fees → APR ≈ 6.13%.
Lender B has the lower rate, so its monthly payment is slightly smaller. But once the $6,000 of fees are counted, its APR is higher — meaning it costs more overall if you keep the loan for the full term. The rate alone would have pointed you to the more expensive loan.
When the rate matters more than APR
APR assumes you hold the loan to maturity. If you expect to sell or refinance in a few years, high up-front fees hurt more per year than APR suggests, because you never get to spread them over the full term. In that case, weigh the fees heavily and lean toward the lower-fee option even if its rate is a touch higher.
Common mistakes
- Comparing rates while ignoring fees. That's exactly the gap APR was created to close.
- Confusing APR with APY. APY measures compounding on savings; APR measures the cost of a loan. They answer different questions.
- Forgetting your time horizon. APR favors long holds; up-front fees favor neither if you leave early.
Use the calculator
Put these ideas to work with the APR Calculator. You can also browse all MoneyCalcKit calculators or read the calculator methodology for formulas and assumptions.
Frequently asked questions
Is a lower APR always the better deal?
Usually, if you keep the loan to term. But if you'll pay it off or refinance early, a loan with a lower rate but higher fees can cost you more per year than APR implies.
Why is my APR higher than my interest rate?
Because APR includes fees spread across the loan. The more fees and the shorter the term, the bigger the gap between the two.
Are APR and APY the same?
No. APR is the annual cost of borrowing without compounding; APY is the annual return on savings including compounding.