Mortgage Interest Rate vs. APR: Compare More Than the Headline
Understand the difference between a mortgage interest rate and APR, including the limits of using APR to compare different loan structures.
Two mortgage offers can advertise similar rates while presenting different borrowing costs. Understanding interest rate and annual percentage rate helps you ask more focused questions about what is included.
The two figures answer different questions
The interest rate expresses the annual cost of borrowing before fees and other charges. APR is a broader annualized measure that incorporates the interest rate and certain borrowing charges, such as points and mortgage broker fees. It is therefore often higher than the interest rate. On the Loan Estimate, the interest rate appears with the loan terms, while APR appears in the comparisons section.
Recognize the comparison limits
APR is useful, but it should not be the only basis for choosing a loan. The CFPB cautions against simple comparisons across fixed-rate and adjustable-rate mortgages or different adjustable-rate structures. For an adjustable-rate mortgage, APR does not show the maximum possible interest rate. The payment structure, upfront costs and actual terms still need attention.
Turn the numbers into a clear conversation
Build a comparison sheet with separate spaces for interest rate, APR, points, other fees and monthly payment. Do not combine these into one unlabeled figure. Ask the lender to explain why the APR differs from the interest rate and write the explanation beside that offer. The goal is to understand the tradeoffs well enough to describe them in plain language, rather than to search for a single number that settles every question.
Sources and further reading
Source guidance reviewed for the published version. These articles provide general US mortgage education, not an approval decision or advice tailored to an individual transaction.
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