Mortgage Points Explained: What They Cost and Whether I'd Buy Them Again
One point, one question: how long will you stay?
A mortgage point is prepaid interest that buys down your rate — here's what it actually costs, how to run the break-even math, and the decision framework I use before signing.

What “buying points” actually means
A discount point — often just called a “point” — is a fee you pay the lender upfront, at closing, in exchange for a lower interest rate on the life of the loan. It’s not a fee for the lender’s trouble; it’s literally prepaid interest. You’re handing over cash today so you owe less interest every month going forward.
One point = 1% of your loan amount. On a $400,000 loan, one point costs $4,000. Points are sold in fractions too — a lender might quote 0.5 points ($2,000) or 1.5 points ($6,000), and each increment buys a smaller slice of rate reduction.
There’s no fixed exchange rate between points and rate — it moves with market conditions — but as a rough industry rule of thumb, 1 point buys about a 0.25% reduction in your rate. That’s the number to sanity-check against whatever your lender quotes you, not a guarantee.
| Points Paid | Cost (% of loan) | Typical Rate Reduction |
|---|---|---|
| 1 point | 1% | ~0.25% |
| 2 points | 2% | ~0.50% |
| 3 points | 3% | ~0.75% |
Points are also called a “rate buydown,” and you’ll sometimes see the term “mortgage discount points” on your Loan Estimate
This is an example only; verify the actual points-to-rate tradeoff on your own Loan Estimate, since it varies by lender and by the day.
What it costs, and how to run the break-even math
Here’s the concrete example I use to think through this:
- Loan amount: $400,000
- Rate without points: 6.50%
- Rate with 1 point: 6.25%
- Cost of 1 point: $4,000
- Monthly payment savings: roughly $65
Divide the upfront cost by the monthly savings: $4,000 / $65 ≈ 62 months to break even. Before that point, you’ve paid more in points than you’ve saved in payments. After it, every month is pure savings for as long as you hold the loan at that rate.
A few things that change the math in practice:
Your break-even shrinks with a bigger loan. The same 0.25% buydown saves more dollars per month on a $700,000 loan than a $300,000 one, so the payback period is shorter even though the point still costs 1% of the (larger) balance.
Points are usually tax-deductible in the year you pay them, if the loan is for your primary residence and a few other IRS conditions are met — this can meaningfully shorten your effective break-even.
Refinance risk cuts the other way. If rates drop within your break-even window and you refinance, you never got the payback — you paid $4,000 for a rate you held for 18 months. Points are a bet that you’ll keep this exact loan long enough to collect on it.
Should you buy points on your next loan? My framework
No hype, just math: points are a trade of a known cost today for an uncertain stream of savings later. The entire decision hinges on one question — how long will you actually hold this loan?
Buy points if:
- You’re confident you’ll stay in the home (or hold the loan without refinancing) well past the break-even month — I treat “well past” as at least 1.5–2x the break-even, since life happens
- You have the cash to spare without raiding your emergency fund to do it
- Rates are elevated and you don’t expect a refi opportunity within your break-even window
Skip points if:
- There’s real uncertainty about the timeline — new job, growing family, “we’ll see how the neighborhood is,” anything that raises the odds of selling or refinancing early
- You’d need to stretch financially to afford them, even though the closing math “works”
- You expect rates to fall meaningfully in the next few years — a refi kills your payback before it materializes
Free money changes everything. If you’re getting a seller credit or builder incentive that can only be applied to points or closing costs — not to the price — buy down the rate with that money before you’d ever spend your own cash on points. That’s the closest thing to a free lunch in this whole calculation. [ADD YOUR OWN LINE — did you get a seller credit on your own mortgage, and what did you do with it?]
My own rule: I don’t buy points unless I’m at least 90% sure I’m keeping the loan past double the break-even period. Below that, I’d rather keep the $4,000 liquid — a lower payment via points is not worth locking up cash I might want for something else.
Run your own numbers before deciding — use our mortgage calculator to plug in your actual loan amount, rate quotes with and without points, and see your real break-even.
This is not financial advice. Verify current rates, point pricing, and tax-deductibility rules with your lender and a tax professional before making a decision — terms and market conditions change.
*** THE NUMBERS ***
- Cost of 1 point on $400K $4,000
- Typical rate reduction ~0.25%
- Break-even in this example ~62 months
Hebojago is for information only and is not investment, tax, or legal advice. Rates and offers change — verify terms with the provider before acting.

