APR vs Interest Rate: What’s the Real Difference?

What’s the Difference Between Interest Rate and APR?

The interest rate on a mortgage is the cost you pay each year to borrow the money, expressed as a percentage rate. It does not reflect fees or other charges. In contrast, the annual percentage rate (APR) is a broader measure of the cost of borrowing money; it reflects the interest rate, any points, mortgage broker fees, and other charges paid to get the loan. Because APR includes these extra costs, it is usually higher than the interest rate.

Think of the interest rate as the base cost of borrowing, while APR gives you a more complete picture of what you’ll pay over time. This distinction matters because comparing only interest rates can miss significant upfront costs.

• Interest rate: the yearly cost of borrowing, not including fees or points.
• APR: includes interest plus certain fees and charges, expressed as a yearly rate.
• APR is usually higher because it incorporates additional costs.

Sources: Consumer Financial Protection Bureau, Chase

How APR Is Calculated: What Fees Are Included?

APR is calculated by spreading eligible upfront costs—such as fees and points—across the loan term to show the total yearly cost. It includes the interest rate plus items like origination fees, mortgage broker fees, discount points, and private mortgage insurance. The exact list of fees can vary, but these are common components.

On the Loan Estimate form, you’ll find the interest rate on page 1 under “Loan Terms” and the APR on page 3 under “Comparisons.” This standardized disclosure helps you compare offers from different lenders, but it’s important to know that APR calculations may not include every possible fee, so you should look at the full loan estimate for all costs.

• Origination fees: charged by the lender to process the loan.
• Discount points: prepaid interest that lowers your rate.
• Mortgage broker fees: compensation for the broker.

Sources: Rocket Mortgage, Chase, Consumer Financial Protection Bureau

Example: Same Interest Rate, Different APRs

To see how APR works, consider two lenders offering a $300,000 30-year fixed mortgage at the same 7% interest rate. Lender A’s APR would be lower than Lender B’s because the upfront costs are smaller, even though the interest rate is identical. In a Bankrate example, a 7% rate with $3,000 in points and fees results in an APR of 7.099%. If the fees were higher, the APR would rise accordingly.

This illustrates why APR is a useful tool for comparing offers: it reveals the true cost of borrowing, including upfront expenses. However, keep in mind that your monthly payment is based on the interest rate, not the APR, so a lower APR does not necessarily mean a lower monthly payment.

• Same interest rate, different APRs: the one with lower fees has the lower APR.
• APR spreads upfront costs across the loan term, so it reflects the yearly cost.
• Monthly payment is based on the interest rate, not APR.

Sources: Bankrate, Rocket Mortgage

Why APR Isn’t Always the Perfect Comparison Tool

APR is a helpful baseline, but it has limitations—especially for adjustable-rate mortgages (ARMs). For ARMs, the APR may not reflect the maximum interest rate that could apply after the introductory period. Because future rate adjustments are uncertain, the APR calculation assumes the loan is held for the full term, which can make comparisons less straightforward.

For fixed-rate mortgages, APR is generally more reliable because the rate stays the same. Still, a lower APR does not always mean a better deal. Different loan terms, features, or costs that aren’t included in the APR can affect the overall value. For example, a loan with a lower APR but a higher prepayment penalty might not be the best choice if you plan to sell or refinance early.

• ARM APRs may not capture future rate increases.
• APR assumes you keep the loan for the full term.
• Lower APR doesn’t automatically mean the best deal—consider other loan features.

Sources: Bankrate

Using APR When Shopping for a Mortgage

When comparing mortgage offers, use both the interest rate and the APR to get the full picture. The interest rate shows your monthly payment, while the APR shows the total yearly cost, including fees. If two loans have similar interest rates, the one with the lower APR is likely to cost less over time, assuming all else is equal.

However, be careful when comparing APRs between loans with different terms, such as a 15-year versus a 30-year mortgage. The APR calculation spreads costs over different lengths, so a direct comparison can be misleading. Always review the Loan Estimate to see what fees are included and ask your lender if anything is missing.

Also, remember that APR can vary between lenders for the same interest rate due to differences in fees. This means you should compare the same type of loan (e.g., fixed-rate, same term) and look at the full estimate to understand what you’re paying for.

• Compare both rate and APR when evaluating offers.
• Ask lenders for a Loan Estimate to review fee details.
• For ARMs, pay attention to rate caps and future adjustments.

Sources: Consumer Financial Protection Bureau, Chase, Bankrate, NerdWallet

APR vs Interest Rate: Key Criteria to Compare

When comparing mortgage offers, focus on a few key criteria to make an informed decision. The table below outlines what to look at for each type of rate.

Sources: Consumer Financial Protection Bureau, Rocket Mortgage, Bankrate