Mortgage points let you pay money upfront, at closing, in exchange for a lower interest rate for the life of the loan. They show up on nearly every Loan Estimate as an optional line item, and deciding whether to buy them comes down to a fairly simple question: will you keep the loan long enough for the monthly savings to outweigh the upfront cost?
What a discount point actually is
A discount point is typically priced as a percentage of your loan amount, paid to the lender at closing, in exchange for a reduction in your interest rate. The exact price of a point and the exact rate reduction it buys are set by the lender and change with market conditions, so they are not fixed nationwide figures — your Loan Estimate will show the specific price and rate tradeoff being offered for your loan. Points are sometimes sold in fractional amounts as well as whole points.
Points vs lender credits
Points work in both directions. Paying points lowers your rate in exchange for a higher upfront cost. A lender credit does the opposite: it raises your rate slightly in exchange for a credit toward your closing costs, which lowers your cash due at closing. Which direction makes sense depends on how much cash you have available now versus how long you expect to hold the loan — a buyer short on cash at closing might prefer a credit, while a buyer planning to stay in the home for decades might prefer to pay points.
Calculating the break-even point
The core question with points is how long it takes for the monthly savings to repay the upfront cost. The break-even calculation is straightforward:
Break-even (months) = Upfront cost of points ÷ Monthly payment savings
For example, if paying points costs a certain dollar amount upfront and lowers your monthly payment by some smaller amount, dividing the two tells you how many months you need to keep the loan before the points pay for themselves. Every month you keep the loan beyond that point is money saved; every month short of it means you paid more than you saved. Run your specific rate and payment numbers through the mortgage calculator to compare the monthly payment with and without points.
When buying points makes sense
Points tend to make the most sense when you are confident you will keep the loan well past the break-even period — typically because you plan to stay in the home long-term and have no near-term plans to move or refinance. They also make more sense when you have the cash available without stretching your closing budget thin, since tying up cash in points instead of keeping it as a reserve or using it toward a larger down payment is itself a tradeoff worth weighing.
When points are usually a poor fit
If there is a real chance you will sell or refinance before the break-even period, points are usually a net loss, since you pay the full upfront cost but only capture part of the monthly savings. Points also compete directly with other uses of the same cash — a larger down payment, for instance, permanently reduces your loan balance and may help you avoid or reduce PMI, which is a different kind of savings than a rate reduction. See our PMI guide for how down payment size interacts with mortgage insurance.
Points and refinancing later
If rates fall enough after you close, you might refinance regardless of whether you paid points — and if you refinance before reaching your original break-even point, the points you paid on the original loan are effectively lost. This is worth keeping in mind if you are buying in an environment where you expect you might refinance within a few years; our refinancing break-even guide walks through that separate calculation.
How to decide
Ask your lender for the Loan Estimate at a few different point levels — for example, zero points, one point, and two points — so you can see the actual rate and payment tradeoff being offered rather than relying on rules of thumb. Then compare each option's break-even period against your realistic expectation of how long you will keep the loan. There is no universally correct answer; it depends entirely on your specific numbers and your plans for the property.