When you shop for a loan you will see two percentages: the interest rate and the APR. They are related but not identical, and confusing them can cost you real money. The APR is designed to be the more honest, all-in measure of what borrowing actually costs.
What each number measures
The interest rate is the cost of borrowing the principal, expressed as a yearly percentage, and it is what the lender uses to calculate your interest charges. The annual percentage rate, or APR, includes that interest rate plus certain required fees — such as origination fees and, on mortgages, discount points — rolled into a single yearly figure. Because APR captures fees the interest rate ignores, it is usually higher than the stated rate. Federal Truth in Lending Act rules require lenders to disclose the APR so borrowers can compare offers on equal footing.
Why APR is the better comparison tool
Two loans can share the same interest rate yet cost very different amounts if one charges a hefty origination fee. APR levels the playing field by translating those fees into a rate you can compare directly. When you weigh competing offers, the loan with the lower APR is generally cheaper over its full term, assuming the terms are otherwise identical. This is why lenders are required to show the APR prominently in loan disclosures.
Where APR can mislead
APR assumes you keep the loan for its entire term, which distorts the picture if you plan to pay off or refinance early. On a mortgage, paying points to lower your rate only pays off if you stay long enough to recoup the upfront cost, yet APR spreads that cost across the whole term. Variable-rate loans complicate matters further, since their APR is only an estimate based on today's rate. For most credit cards, APR and the interest rate are effectively the same because card APRs generally exclude fees.
Putting it to work
Use the interest rate to understand your monthly payment and the APR to compare the true cost of different offers. If a lender advertises a low rate but a high APR, dig into the fee structure to see what is inflating the gap. Ask for a full fee breakdown so you know exactly what you are paying beyond interest. The larger the gap between rate and APR, the more the fees matter.
Two lenders both quote a 6% interest rate on a $250,000 mortgage. Lender A charges no fees, so its APR is 6%. Lender B charges $5,000 in points and fees, pushing its APR to about 6.2%. Even though the headline rate looks the same, Lender A is cheaper unless you value some specific term of Lender B's offer.
Key takeaways
- The interest rate covers only the cost of the principal; APR adds required fees.
- APR is usually higher than the interest rate and is the better tool for comparing loans.
- APR assumes you hold the loan to term, so it can mislead if you pay off or refinance early.
- On most credit cards, APR and interest rate are effectively identical.
Common mistakes
- Choosing a loan by its interest rate alone and ignoring a much higher APR.
- Paying mortgage points for a lower rate when you plan to move or refinance within a few years.
- Assuming APR reflects your real cost even when you will repay the loan early.
FAQ
Which is always higher, APR or interest rate?
When a loan has fees, the APR is higher than the interest rate. If a loan truly has no fees, the two can be equal.
Does APR include compounding?
APR is a simple annualized rate and does not account for compounding. The annual percentage yield, or APY, does reflect compounding and is used more for savings than for loans.