Every mortgage quote you'll ever see has the same three numbers near the top: an interest rate, an APR, and (sometimes) points. They sound like variations of the same idea. They're not. Understanding what each one really represents is the difference between picking the "lowest rate" and picking the loan that actually costs you the least.
Interest rate: what you pay on the balance
The interest rate is the percentage the lender charges you each year on your outstanding loan balance. It's the number that drives your monthly principal-and-interest payment, and nothing else. It does not include fees, insurance, taxes, or points.
On a $400,000 30-year fixed at 6.50%, the principal-and-interest payment is about $2,528/month. Move the rate to 6.25% and it drops to about $2,462. Everything else — closing costs, PMI, escrow — is layered on top separately.
APR: the interest rate plus the cost of getting the loan
The Annual Percentage Rate (APR) takes the interest rate and folds in most of the fees required to originate the loan — discount points, origination fees, underwriting fees, mortgage insurance in some cases, and other lender charges — then expresses the whole thing as a single annualized percentage over the life of the loan.
APR is the closest thing to a true "all-in" cost that federal law requires lenders to disclose. It's why the APR on the same loan is always at least as high as the interest rate, and usually a little higher.
The gap between rate and APR is diagnostic:
- APR within about 0.15% of the rate → a low-fee, "clean" loan. What you see is close to what you pay.
- APR 0.25%–0.50% above the rate → real money in origination fees, points, or both. Ask for a Loan Estimate before getting excited.
- APR 0.50%+ above the rate → the headline rate has almost certainly been "bought down" with expensive points. Your break-even math needs to be run carefully.
One caveat: APR assumes you keep the loan for its full term. Most Americans refinance or sell inside 7–10 years, which means the fees baked into APR are being spread across a much shorter effective loan life than the disclosure assumes. That matters for points especially.
Points: pre-paying interest to lower your rate
A discount point is a fee you pay the lender at closing to permanently lower your interest rate. One point costs 1% of the loan amount and typically buys the rate down by roughly 0.25%, though the exact trade varies by lender and market.
Example, $400,000 loan:
- 0 points, 6.75% → $0 up front, $2,594/month
- 1 point, 6.50% → $4,000 up front, $2,528/month
- 2 points, 6.25% → $8,000 up front, $2,462/month
The 1-point option saves about $66/month vs. 0 points. That's roughly a 61-month (about 5 years) break-even before the up-front $4,000 is earned back. If you'll be in the loan longer than that — same house, same rate, no refinance — points come out ahead. If you'll refinance or sell before then, you paid for a discount you never fully used.
There's also a separate line called origination points (sometimes just "origination fee") — that's the lender's fee for making the loan, not a rate buy-down. It shows up in APR the same way discount points do, but it doesn't lower your rate. On a clean quote, origination is small or waived; on a bad quote, it's where a lot of margin hides.
How the three numbers hang together
Read a quote in this order:
- Points first. Is the lender quoting 0 points, or are they burying a rate buy-down? A 6.25% quote with 2 points is a very different loan than a 6.25% quote with 0 points.
- Then rate. Compare rates at equivalent point levels. Apples to apples means 0 points to 0 points.
- Then APR. Whichever loan wins on APR at the same point structure is genuinely the cheaper loan, assuming you'll hold it long enough for the fees to matter.
What CU RateFinder does with points
On our home page, when a credit union publishes the same loan term at different point tiers — say 30-year fixed at 0 points, 0.5 points, and 1 point — we keep them as separate rows instead of only surfacing the lowest number. That way you can see the actual trade-off the credit union is offering rather than a cherry-picked headline rate.
Rate and APR are shown side by side in the table, so the diagnostic gap above is visible at a glance. And any teaser language — "as low as," "starting at," "rates from" — is filtered out at scrape time, so you're not comparing a real quote against a marketing floor.
The short version
- Interest rate drives your monthly payment.
- APR tells you the true annualized cost, fees included.
- Points are optional up-front dollars that trade cash today for a lower rate tomorrow.
- Always compare quotes at the same point structure before deciding which lender is cheaper.
- Run the break-even on points against how long you actually plan to keep the loan, not the full 30 years the disclosure assumes.
Do those five things and you'll stop being surprised by closing disclosures — and you'll stop overpaying for headline rates that weren't as low as they looked.