Mortgage Points: When Paying Points Saves You Money

Every mortgage rate quote comes with an associated number of points, which may be zero, positive (discount points you pay to lower the rate), or negative (lender credits you receive in exchange for a higher rate). This rate-to-points trade-off is one of the most consistently misunderstood aspects of mortgage pricing, and making the wrong choice can cost thousands of dollars.

A discount point is a prepaid interest payment equal to one percent of the loan amount. Paying one point on a $300,000 loan costs $3,000 upfront and typically reduces the rate by approximately 0.25 percent, though the exact reduction varies by lender and market conditions. The financial benefit of paying that $3,000 is a lower monthly payment for the life of the loan, which eventually recovers the upfront cost if you hold the loan long enough.

The math is simple and the answer is knowable: the break-even analysis determines precisely how long you must hold the loan before paying points becomes financially worthwhile. This guide explains the calculation, the factors that affect the break-even, and how to think about the points decision in the context of your specific situation.

The Break-Even Calculation

The break-even period for paying discount points is calculated by dividing the upfront cost of the points by the monthly payment savings they produce. If one point costs $3,000 and reduces the monthly payment by $50, the break-even is 60 months (five years). If you keep the loan for more than 60 months, paying the point saves money. If you sell or refinance sooner, paying the point costs money.

The monthly payment reduction from points is straightforward to calculate. On a $300,000 loan, reducing the rate from 7.0 to 6.75 percent reduces the 30-year monthly payment by approximately $50. At one point ($3,000) cost, the break-even is 60 months. After five years, each additional month the loan is held generates a $50 net monthly benefit from having paid the point.

The calculation changes if you are comparing against investing the upfront point cost rather than paying it. If the $3,000 point cost could be invested at an expected 8 percent annual return, the alternative-investment break-even is longer than the simple break-even calculation suggests, because the opportunity cost of the point investment grows over time.

When Paying Points Makes Sense

Points make financial sense when you have high confidence that you will hold the loan for significantly longer than the break-even period. For a long-term primary residence where you expect to stay for 10 or more years, paying one to two points to reduce a 30-year fixed rate is often financially beneficial, provided the break-even is five to six years.

Paying points is most valuable in a high-rate environment where the absolute rate reduction in dollar terms is larger. At a 7 percent base rate, 0.25 percent rate reduction saves $50 per month on a $300,000 loan. At a 4 percent base rate, the same 0.25 percent reduction saves approximately $43 per month. Higher starting rates make the dollar value of rate reduction larger.

Borrowers who have surplus cash at closing and cannot or do not want to put it toward a larger down payment may productively use that cash to buy down the rate through points. The comparison is between paying points (guaranteed rate reduction and payment savings) versus investing the cash (uncertain investment returns).

When Lender Credits Are the Better Choice

Negative points, also called lender credits, provide upfront cash at closing in exchange for a higher interest rate. Accepting one negative point on a $300,000 loan gives you $3,000 in lender credits that offset closing costs, at the cost of a 0.25 percent higher rate and $50 more per month.

Lender credits are most valuable when you have limited cash for closing costs, when you plan to sell or refinance within a few years, or when you are uncertain about your holding period. If you will sell in three years, accepting a higher rate in exchange for $3,000 less in out-of-pocket closing costs saves you money because you would not have reached the break-even on paying points.

In a declining rate environment where you expect to refinance in the next few years as rates fall, starting with a higher rate accepted in exchange for lender credits that cover closing costs makes the initial loan nearly free to obtain. If you refinance to a lower rate in two years, the higher rate you accepted only affects your payments for that two-year period.

The Tax Deductibility of Points

Discount points paid on a mortgage to purchase a primary residence are typically deductible as prepaid mortgage interest in the year paid, for borrowers who itemize deductions. This tax benefit effectively reduces the net cost of paying points, improving the break-even calculation.

Points paid for refinancing are not fully deductible in the year paid but must be amortized over the life of the loan, deducting a proportional amount each year. The tax benefit is still real but spread over the loan term rather than available immediately.

Verify the deductibility of points with a tax advisor for your specific situation. The standard deduction has increased significantly, meaning fewer taxpayers itemize and therefore fewer benefit from the points deduction. Confirming your deductibility before factoring it into the break-even analysis ensures your calculation is accurate.

Final Thoughts

Paying discount points is a rational financial decision when your expected holding period meaningfully exceeds the break-even period and when you have the cash available without sacrificing other financial priorities. The calculation is simple and the answer is precise.

The most common mistake with points is paying them without explicitly calculating the break-even or without having a realistic assessment of your likely holding period. Points paid on a loan you refinance or sell in four years, when the break-even is five years, represent a financial loss rather than a savings.

Calculate the break-even. Assess your likely holding period honestly. Make the points decision based on that analysis rather than on the assumption that lower rates are always better.