Mortgage lenders often offer the option to buy “discount points” at closing in exchange for a lower interest rate on your home loan. Each point typically costs 1% of your loan amount and shaves a fraction of a percentage point off your rate. The math behind whether this trade is worth it depends on how long you plan to keep the loan, how much cash you have available at closing, and what you could otherwise do with that money. This guide walks through how discount points actually work, how to calculate the breakeven point, and when paying upfront makes financial sense versus when it doesn’t.
What Discount Points Actually Buy You
One discount point equals 1% of your loan principal, paid upfront at closing, in exchange for a permanent reduction in your interest rate — usually somewhere between 0.125% and 0.25% per point, though the exact ratio varies by lender, loan type, and market conditions. On a $350,000 mortgage, one point costs $3,500. If that point buys you a 0.25% rate reduction, your monthly payment drops for the entire life of the loan. The key word is permanent: unlike a temporary rate buydown that expires after a year or two, discount points lower your rate for as long as you hold the mortgage, whether that’s 30 years or three.
Calculating Your Breakeven Point
The breakeven point is the number of months it takes for your monthly savings to equal what you paid upfront for the points. Divide the total cost of the points by your monthly payment savings. If two points cost $7,000 and save you $58 a month, your breakeven is about 121 months, or just over 10 years. If you plan to stay in the home and keep the same loan longer than that, buying points saves you money overall. If you expect to sell, refinance, or pay off the loan sooner, you’ll likely lose money on the points because you won’t stay in the loan long enough to recoup the upfront cost. Running these numbers before closing, rather than trusting a lender’s quick pitch, is the only reliable way to know which way the math actually breaks for your situation.
How Points Interact With Your Down Payment and Closing Costs
Points compete with your other closing-day cash needs. Money spent on points is money not going toward a larger down payment, an emergency fund, or other closing costs like title insurance and appraisal fees. A larger down payment can also lower your rate and eliminate private mortgage insurance, which sometimes delivers a better return than points do. Before deciding, it helps to compare a few side-by-side loan scenarios — same loan amount, different combinations of down payment and points — so you can see the total interest paid and monthly payment for each path rather than evaluating points in isolation.
Using a Calculator to Compare Scenarios
Because the breakeven math depends on several moving variables at once — loan amount, rate, term, and how many points you’re considering — it’s easiest to model with a tool rather than by hand. The Mortgage Calculator lets you plug in different rate and loan-amount combinations to see the resulting monthly payment and total interest over the life of the loan side by side. Run your quoted rate first, then run the same loan with the discounted rate the points would buy, and compare the total interest paid over your expected holding period, not just the full 30-year term, since most homeowners move or refinance well before then.
When Points Are Usually Not Worth It
Points tend to be a poor deal if you’re not confident you’ll keep the loan past the breakeven point, if you’re already stretching your cash reserves to close, or if you expect rates to fall and plan to refinance within a few years. They can also be a bad trade if the lender’s points-to-rate ratio is unusually poor — always ask for a loan estimate that breaks out the cost per point and the resulting APR, and compare offers from at least two lenders before assuming the points on the table are priced fairly.
Frequently Asked Questions
How much does one mortgage discount point cost?
One point costs 1% of your total loan amount, paid as a lump sum at closing. On a $300,000 loan, one point costs $3,000.
How much does a discount point lower my interest rate?
It varies by lender and market, but a common range is 0.125% to 0.25% off your rate per point purchased.
What is a good breakeven period for buying points?
There’s no universal number, but many buyers use 5 to 7 years as a rough threshold — if you expect to hold the loan longer than your calculated breakeven, points are usually worth considering.
Are mortgage points tax deductible?
In many cases points paid on a primary residence purchase loan can be deducted, subject to IRS rules and limits. Consult a tax professional for your specific situation since rules differ for refinances and investment properties.
Can I negotiate the cost or rate reduction of points with my lender?
Yes. The points-to-rate ratio isn’t fixed by regulation, so it’s worth comparing loan estimates from multiple lenders, since the value you get per point can differ meaningfully between them.