When you get a mortgage quote, you'll often see the same loan offered at several different rates — each with a different upfront cost. That cost is usually points: money you pay at closing to lower your interest rate for the life of the loan.

Points can save a lot over time. They can also be a waste of cash you'd be better off keeping. The difference comes down to a simple calculation and an honest guess about how long you'll keep the mortgage.

What a point is

One discount point equals 1% of your loan amount. On a $300,000 mortgage, one point costs $3,000. You can often buy fractions of a point too, such as 0.5 or 1.25.

In exchange, the lender lowers your interest rate. How much the rate drops per point isn't standardized — it varies by lender, loan type and the market on the day you lock. That's why comparing the actual Loan Estimates you receive is essential.

The break-even calculation

The question is simple: how many months of lower payments does it take to earn back what you paid upfront?

Break-even (months) = cost of points ÷ monthly payment savings

For a more complete picture, consider what that $3,000 could have done instead — sitting in a high-yield savings account or reducing your loan balance. Factoring in that opportunity cost pushes the true break-even point out somewhat further.

When buying points makes sense

Points tend to work in your favor when:

  • You expect to stay in the home — and keep the loan — for many years.
  • You have cash to spare after your down payment, closing costs and a healthy emergency fund.
  • Rates seem unlikely to fall enough to make refinancing attractive soon. If you refinance, the points you paid on the old loan are gone.
  • The seller is paying. Using seller concessions for points lowers your rate without using your own cash.

When to skip them

Points are usually a poor choice when:

  • You might move or refinance within a few years.
  • Paying them would drain your savings. A home comes with surprise costs; cash on hand matters more than a slightly lower rate.
  • A larger down payment would do more. In some cases, putting the same money toward the down payment — especially if it gets you to 20% and avoids mortgage insurance — saves more.

Lender credits: points in reverse

Lender credits do the opposite of points. You accept a slightly higher rate, and the lender gives you a credit that reduces your closing costs.

That can be a smart move if cash is tight at closing or you expect to sell or refinance relatively soon — you save money upfront and won't be in the loan long enough for the higher rate to cost much. The break-even math works the same way, just in reverse.

Taxes

Points paid when you buy your primary residence may be deductible as mortgage interest in the year you pay them, if you itemize and meet IRS requirements. Points on a refinance are generally deducted gradually over the life of the loan. Because most households now take the standard deduction, many buyers won't see a tax benefit at all. IRS Publication 936 has the details, and a tax professional can confirm how it applies to you.

The bottom line

Points are a bet on time. Calculate your break-even point, compare it honestly with how long you expect to keep the loan, and keep enough cash in reserve for life as a homeowner. If the numbers are close, holding onto your cash is rarely a mistake. For the bigger picture, see how mortgages work.