At closing, your lender will offer you a deal: pay some money now, and we’ll lower your interest rate for the next 30 years. These upfront payments are called discount points, and they can be either one of the smartest or one of the most wasteful purchases in homebuying — depending entirely on a single number: your break-even point. Buy points on a loan you’ll keep for decades and they quietly earn you hundreds a year; buy them before a move or refinance and you’ve simply donated cash to your lender. Here’s how to compute the break-even and when points actually pay off.
What discount points are
One discount point costs 1% of the loan amount and typically buys a 0.25% reduction in your interest rate. On a $400,000 loan, one point is $4,000 upfront for roughly a quarter-point off the rate. You can usually buy in fractions (half points, quarter points) or stack multiple points, and the rate reduction scales roughly linearly.
Points are distinct from origination fees and lender credits. Origination fees are the lender’s charge for making the loan — they don’t lower your rate. Lender credits are the mirror image of points: the lender pays you (as closing-cost credit) in exchange for a higher rate. All three are just different points on the same rate-versus-cash tradeoff curve, and you should always ask your lender to quote all three versions.
The break-even formula (with real numbers)
The entire decision reduces to one division:
Break-even (months) = points cost ÷ monthly payment savings
Worked example — $400,000 loan, 30-year term:
- At 6.50% with no points: $2,528.27/month
- Buy 1 point ($4,000) → rate drops to ~6.25%: $2,462.87/month
- Monthly savings: $65.40
- Break-even: $4,000 ÷ $65.40 ≈ 61 months (just over 5 years)
Buy 2 points ($8,000) → rate ~6.00%: payment $2,398.20, savings $130.07/month, break-even $8,000 ÷ $130.07 ≈ 61.5 months. Notice the break-even barely moves — because each point buys a similar rate cut, the payback period is roughly constant. What changes is the total profit after break-even: two points earn double the monthly savings for the rest of the loan.
The verdict rule: if you’ll keep the loan past the break-even month, points win; if you’ll sell or refinance before it, points lose. Every payment after month 61 is pure profit on the 1-point deal — about $785 a year, every year, for up to 25 more years.
When buying points makes sense
- You’re staying long-term. This is the big one. Buying points on a “forever home” you plan to keep 10+ years is usually a clear win. On a starter home you’ll sell in 4 years, it’s a guaranteed loss.
- You have the cash without strain. Points compete with your down payment, emergency fund, and moving costs for the same dollars. Never buy points with money that leaves you cash-poor at closing.
- You’re already at a good rate. Points stack on top of whatever rate you’ve negotiated — shop the base rate first, then price points. A lender quoting a high rate with “cheap” points is just moving money between pockets.
- You itemize deductions. Points paid on a purchase mortgage are generally deductible as mortgage interest in the year paid (consult a tax advisor for your situation), which shortens the effective break-even.
When points are a trap
- You might refinance soon. Refinancing replaces the loan — and vaporizes any unrecovered points. If there’s a realistic chance rates fall within your break-even window, skip the points; you can buy them (or not) on the refinance instead.
- Your time horizon is short. Job relocations, growing families, and upsizing plans kill point investments early. Be brutally honest about how long you’ll stay.
- The break-even exceeds ~7 years. Lenders sometimes price points poorly (a point buying only 0.125% off). If the math needs a decade to pay back, the points are overpriced — negotiate the base rate instead.
- Cash is tight. Every dollar in points is a dollar not in your emergency fund. The return on points is slow and certain; the return on a cash cushion is surviving the surprise roof repair.
Points vs. a bigger down payment
It’s a common dilemma: $4,000 toward points, or $4,000 more down? The down payment reduces your loan balance permanently — lowering the payment and the total interest and possibly your PMI. Points only lower the rate. As a rule of thumb, if you’re below 20% down, the extra down payment usually wins (PMI savings amplify it). If you’re already at 20%+, compare the two directly: compute the payment both ways and pick the lower one. There’s no universal winner — it’s arithmetic, not philosophy.
How to negotiate points like a pro
Points are priced on a rate sheet the lender doesn’t volunteer — so ask directly: “What is my rate with zero points, and what does each quarter-point of rate reduction cost?” Get this in writing on the Loan Estimate, then:
- Shop the base rate first. Negotiate the zero-point rate across 3+ lenders before discussing points. A lender offering “cheap points” on an inflated base rate is just moving your money between line items.
- Ask for the full menu. Lenders can quote any combination — 0, 0.5, 1, 1.5, 2 points. The per-point price often improves as you buy more (the second point sometimes buys a bigger cut than the first), so price each increment separately.
- Compare against lender credits. Ask what credit they’d give you for taking a rate 0.25% higher. Sometimes the credit for going up exceeds the cost of going down — an asymmetry you can exploit if you’re cash-constrained at closing.
- Time it. You generally lock your rate-and-points combination together. If you lock early and rates fall before closing, ask about a float-down option rather than mourning the points.
And on refinances, the same math applies — but the horizon is what matters. Points on a refinance you’ll keep for 15 years are usually a better deal than points on a purchase you might exit in 7, because refinance borrowers have already revealed their staying behavior.
Finding points on your Loan Estimate
Lenders must disclose points on the standardized Loan Estimate form — page 2, section A (“Origination Charges”). Discount points appear as a named line item (e.g., “Discount points — 1.000%”), separate from origination fees. When comparing lenders, line up their Loan Estimates side by side and compare total section-A costs at the same rate — a lender quoting a lower rate with two points isn’t cheaper than a lender quoting a higher rate with zero points until you run the break-even on the difference. The Loan Estimate makes this comparison mechanical: same rate, lowest total cost wins; different rates, break-even math decides.
Key takeaways
- 1 point = 1% of the loan upfront ≈ 0.25% off your rate.
- Break-even = points cost ÷ monthly savings. On $400K, 1 point breaks even in ~61 months.
- Keep the loan past break-even and points profit; sell or refinance before it and they lose.
- Never buy points with emergency-fund money, and never buy them if a refinance is likely soon.
- Below 20% down, extra down payment usually beats points.
Frequently asked questions
How much does one mortgage point lower my rate?
Typically about 0.25%, though it varies by lender and market — always ask for the exact rate with and without points. Some lenders offer worse deals (0.125% per point); those points are usually overpriced.
Are discount points tax-deductible?
Points paid on a loan to buy your primary residence are generally deductible as mortgage interest in the year you pay them, provided you meet IRS conditions. Points on a refinance are usually deducted over the life of the loan instead. Tax law changes, so confirm with a tax advisor.
Can I buy fractional points?
Yes — most lenders sell points in eighths or quarters (0.125, 0.25, 0.5, 0.75). There’s nothing special about whole numbers; price the exact break-even for whatever fraction is offered.
Do points make sense on an ARM?
Rarely. The break-even math assumes you keep the rate for decades, but an ARM’s rate resets in 5–10 years. Unless the point discount is unusually generous, skip points on adjustable-rate loans.
What’s the difference between discount points and origination fees?
Discount points buy a lower rate; origination fees are simply the lender’s charge for processing the loan and buy nothing. Both appear on your Loan Estimate — compare lenders on total cost, not on any single line.
Can I roll points into the loan instead of paying cash?
Some lenders allow it, but financing the points means paying interest on them for 30 years, which lengthens the break-even considerably. Paying cash at closing is almost always the better deal if you buy points at all.