Why Your Mortgage Rate and APR Are Different Numbers
When shopping for a mortgage, you'll notice something puzzling: lenders quote two different rates — an interest rate and an APR. They're always different, and the APR is always higher. This gap isn't a trick or an error. It's actually one of the most useful pieces of information a lender is required to give you.
Understanding the difference can genuinely save you thousands of dollars over the life of your loan.
What's Included in Mortgage APR?
A mortgage's APR takes the base interest rate and adds in the various fees and costs associated with getting the loan. These typically include:
- Origination fees — charged by the lender for processing your application
- Discount points — prepaid interest you pay upfront to lower your rate
- Mortgage broker fees — if you used a broker to find the loan
- Certain closing costs — like underwriting and document preparation fees
- Prepaid mortgage insurance — on FHA loans and certain conventional loans
Costs that are not typically included in APR: title insurance, appraisal fees, attorney fees, and homeowner's insurance.
How to Use APR to Compare Mortgage Offers
The APR is most powerful when comparing two or more loan offers side by side. Here's a realistic example:
| Lender | Interest Rate | APR | APR Gap | What It Suggests |
|---|---|---|---|---|
| Lender A | 6.50% | 6.62% | 0.12% | Low fees — straightforward deal |
| Lender B | 6.25% | 6.78% | 0.53% | Lower rate, but much higher fees |
| Lender C | 6.75% | 6.80% | 0.05% | Higher rate, but minimal fees |
Lender B looks attractive with the lowest interest rate, but the large APR gap signals heavy fees. Depending on how long you keep the loan, Lender A or C might be cheaper overall.
The Break-Even Point: Short-Term vs. Long-Term Cost
APR comparisons work best when you plan to hold the mortgage for its full term. If you might sell or refinance within a few years, the calculation changes. Here's why:
- A loan with low fees and a higher rate costs less upfront but more each month.
- A loan with discount points and a lower rate costs more upfront but saves money monthly.
The point where the monthly savings offset the upfront costs is called the break-even point. If you sell before reaching it, you've overpaid. If you stay past it, you've saved money. APR blends these into one annual figure assuming you keep the loan to term.
APR on Adjustable-Rate Mortgages (ARMs)
ARM APR calculations are more complex because the rate changes over time. Lenders must disclose an APR for ARMs, but it's calculated based on assumptions about future rate movements — which may not match reality. Treat ARM APRs as approximate guides, not guarantees.
What Counts as a Good Mortgage APR?
Mortgage rates fluctuate with economic conditions, so there's no universal "good" number. However, some principles hold across market conditions:
- A small gap between your interest rate and APR (under 0.25%) generally indicates lower fees.
- Shopping at least three lenders is the most reliable way to ensure you're getting a competitive rate.
- Your credit score, loan-to-value ratio, and loan term all heavily influence the APR you're offered.
Key Takeaway
Never compare mortgages by interest rate alone. Always request the Loan Estimate (a standardized document lenders must provide) and compare APRs across offers. The APR is the closest thing to a true apples-to-apples comparison tool the mortgage market gives you — use it.