APR vs Interest Rate FAQs — What's the Real Difference?

The interest rate is the cost of borrowing the principal — expressed as an annual percentage with no fees included. APR includes the interest rate plus origination fees, discount points, and other mandatory lender fees — giving you the true all-in annual cost of the loan.

Almost always, yes — because fees are added to the interest rate cost. The exception is when a lender provides credits (lender credits) to cover closing costs, which slightly reduces the effective cost relative to the rate.

Use APR to compare loans with different rate/fee combinations. A loan at 6.75% with $4,000 in fees may have a higher APR than a loan at 7.00% with zero fees — making the zero-fee loan the better deal if you plan to hold the loan long enough.

APR amortizes fees over the life of the loan. On a 30-year mortgage, $3,000 in fees adds only ~0.10% to APR. On a 3-year auto loan, the same fees add ~1% to APR. The shorter the term, the more impact fees have on APR — and the more important it is to compare APR rather than rate.

No. Blended rate is a calculation you make across multiple existing loans using stated interest rates only. APR is a regulatory disclosure on a single new loan that includes fees. Blended rate describes your current aggregate cost; APR describes the cost of a specific offer.

Yes. Under the Truth in Lending Act (TILA), lenders must disclose APR on all consumer credit products. This allows apples-to-apples comparison between loan offers with different fee structures.