You see an ad that says 5.25% on a 30-year fixed mortgage. You call, and the loan officer is friendly. They say that rate is for someone with perfect credit, a big down payment, and maybe a few points paid upfront. Or they say they can get you close. Then, weeks later, the rate creeps up. By closing, the number on the paper is a full point higher. That is the classic bait-and-switch. The advertised rate got you in the door. The real rate is what you actually sign.
Bait-and-switch rate tactics are not always a shady guy in a bad suit. Sometimes it is a lender advertising a rate that only exists for a tiny slice of borrowers. Sometimes it is a loan officer quoting the best possible rate before they know your full financial picture. Sometimes it is a rate that depends on paying discount points, which are upfront fees that buy down the rate. The ad does not always lie. It just leaves out the parts that make the rate impossible for you.
The biggest mistake homeowners make is trusting a verbal quote. A rate is not real until it is locked and written down. If a lender says, “Don’t worry, I’ll get you 5.5% at closing,“ that is not a lock. A rate lock is a written commitment that holds a specific rate for a specific time, usually 30, 45, or 60 days. Ask for it in writing. Ask what it costs. Ask what happens if rates drop before closing. Some lenders offer a float-down, which lets you take a lower rate if the market improves. Get those details before you pay for an appraisal or sign anything.
You also need to compare the annual percentage rate, or APR, not just the interest rate. The APR includes the interest rate plus most lender fees and points. A low interest rate with high points can look like a bargain but cost you thousands upfront. If the advertised rate requires two points, ask for the rate with zero points. That is the number you can compare fairly. Also ask for the monthly payment, the total closing costs, and the lender credits. A rate quote without those numbers is just half the story.
When you apply, the lender must give you a Loan Estimate within three business days. That form shows the rate, points, monthly payment, and closing costs. Read it carefully. If the loan officer promised a rate that is not on the page, ask why. If they say, “That was just an estimate,“ then you know the low rate was bait. Later, before closing, you will get a Closing Disclosure. Compare it side by side with the Loan Estimate. If the rate, points, or fees changed, stop and ask questions. You do not have to sign until you understand the numbers.
Red flags are worth memorizing. A lender who refuses to lock your rate in writing is a problem. A lender who pressures you to sign before you can compare offers is a problem. A lender who says the rate lock only starts after the appraisal or after you find a house is a problem. A lender who hides discount points inside seller credits or lender credits is a problem. A lender who rushes you is a problem.
The fix is simple, even if it takes a little work. Get quotes from at least three lenders within a short window, usually 14 days, so credit pulls count as one. Ask each one for a written Loan Estimate with the same loan amount, down payment, and term. Compare the rate, APR, points, and total costs. If one lender baits you with a low rate, show them a better written offer and ask them to match it in writing. If they cannot, walk away. A good lender will not be afraid of paper.
A mortgage is the biggest loan most Americans will ever have. A half-point difference in rate can cost tens of thousands of dollars over 30 years. That money matters. So treat every advertised rate as a starting question, not a promise. Get it locked. Get it in writing. Compare the APR. And never let a friendly voice on the phone talk you into a rate you did not agree to in writing.
