Should I buy down my rate?
It is not a good move or a bad move. It is a timeline question.
Paying points trades cash today for a lower rate over time. Whether that trade works depends on how long the loan actually lasts, what the market does next, and what else that money could be doing.
The rates and costs on this page are illustrations chosen to explain the math. They are not quotes. Real pricing changes daily and varies by lender, loan program, and scenario.
Want the short version?See the key points
- Discount points exchange more cash upfront for a permanently lower mortgage rate and payment.
- The price of each rate changes with the market, so one point does not buy a fixed rate reduction.
- A complete break-even analysis includes monthly savings, principal reduction, and the upfront cost.
- Selling or refinancing before break-even can leave part of the upfront cost unrecovered.
What it means
Cash today for a permanently lower mortgage rate.
Discount points are an upfront fee paid at closing to reduce your interest rate for the life of the loan. One point equals 1% of the loan amount. On a $500,000 loan, one point is $5,000. Unlike a temporary buydown, this actually changes the note rate on your loan documents. The lower rate is yours from the first payment to the last.
Points vs. temporary buydowns
A temporary buydown subsidizes your payment for a set period of time while your note rate stays the same. Discount points permanently change the note rate itself. Same phrase, "buying down the rate," completely different mechanics. Temporary buydowns are covered here.
The opposite trade: lender credits
Discount points sit below par: you pay cash for a lower rate. Lender credits sit above par: you accept a higher rate and the lender offsets your closing costs. Same spectrum, opposite direction. The math inverts: instead of needing time to recover your cost, you start ahead and the higher payments erode the credit over time. Lender credits are explained here.
Why it costs money
A lower mortgage rate is a trade with an investor.
Most mortgages do not stay with the lender who made them. They are sold to investors on the secondary market. On any given day, that market has a going rate: the rate at which investors will buy a loan at full value, based on what their money could earn elsewhere. That going rate is what lenders call par.
A loan written below the going rate pays the investor less interest every month than other places they could put their money. Investors do not accept less for nothing. The upfront premium you pay in points is what compensates them for the smaller yield.
Think of it like prepaying interest. The investor collects less each month, so they collect more at the start. Whether that prepayment pays off for you depends entirely on how long the loan survives.
The math
The complete discount points math has two parts, not one.
The numbers below are for illustration, not a quote. A $500,000 loan on a 30-year fixed. The market rate for this illustration is 6.500%. Paying one point ($5,000) buys the rate down to 6.250%.
No points, 6.500%
$3,160/mo
$0 upfront. The baseline.
1 point, 6.250%
$3,079/mo
$5,000 upfront. Saves $81/mo.
The quiet second benefit
Faster principal paydown
A lower rate means more of each payment goes to principal, so your balance falls faster too.
The simple version of break-even divides the cost by the monthly savings: $5,000 divided by $81 is about 62 months. But that misses the second benefit. At the lower rate, more of every payment goes toward principal, so the bought-down loan also carries a smaller balance at any point in time. A complete analysis counts both the payment savings and that principal advantage, which moves the true break-even earlier than the simple math suggests.
If the loan lasts past break-even
- Payment savings fully recovered
- Principal advantage compounds over time
- Every month past break-even is pure gain
If the loan ends before break-even
- Unrecouped amount is gone (not the full cost, just what has not been recovered yet)
- That money could have paid down debt, funded improvements, stayed invested, or built reserves
- The closer to break-even, the smaller the loss
Explore the break-even
Move the timeline. Watch the points break-even change.
The same points decision flips from losing to winning based on nothing but time. Drag the slider to your realistic timeline and see where the math lands. The different point amounts below show how the dollar risk scales.
Showing 1 point ($5,000) buying 6.250% instead of 6.500%, saving $82/mo
Net position of paying points vs. taking par. Above zero, points are ahead. Below zero, the bar shows what remains unrecouped.
At 0.5 years, you are still behind by $4,375 of $5,000
Amount at risk if the loan ends at 0.5 years
0.5 pts ($2,500)
$2,187
1 pt ($5,000)
$4,375
2 pts ($10,000)
$8,749
Illustrative only. $500,000 loan, 30-year fixed, par 6.500%, 0.500% cost per 0.125% rate step. Includes payment savings and principal reduction differences. Not a rate quote.
The wildcard
The refinance option, and what the mortgage market is doing.
Break-even math assumes the loan survives. The most common reason it does not is a refinance. If rates fall meaningfully after you close, refinancing is always an option. It is never a guarantee. Nobody knows if or when rates will drop. But the possibility belongs in any honest analysis, because a refinance before break-even means the unrecouped portion of your points is gone.
That is why the decision should also weigh what the overall market is doing, alongside your personal timeline.
If the trend is downward and your timeline is short, or a refinance within a few years is plausible, points face long odds. You may end up paying today for a rate you replace before it pays you back.
If rates appear to be near the low end of their range and you expect to hold the loan for many years, points have their best odds. A refinance is less likely to undercut them, and the lower rate compounds in your favor for a long time.
The bet, stated plainly
When you pay points, you are betting the loan lasts past break-even. When you skip them, you keep the option open and keep the cash. Neither is wrong. They are different bets on an unknowable future.
The packaging
Mortgage discount points by other names.
Not every upfront cost that lowers your rate is called a discount point. Origination fees, borrower-paid broker comp, and bundled pricing structures all do the same thing: money upfront, lower rate, higher cash to close.
Compare the rate and the total cash to close. Same day, same loan, every cost counted. That is the apples-to-apples comparison. Everything else is packaging.
How to think about it
When mortgage points tend to make sense, and when they tend not to.
These are tendencies, not rules. Every situation carries its own numbers.
A practical way to compare
Ask for the same loan priced with and without points, from the same day, with the total cash to close shown for each. Two rates, two totals, side by side. Then run your own realistic timeline against the break-even and see which version of the loan fits the life you actually expect to live.
The question to ask yourself
What is the probability this loan lasts longer than my break-even?
If you found this useful
These guides explore related topics you might be wondering about.
Why would I take a higher rate?
How lender credits reduce your cash to close.
Read guideAre there other rate options beyond what I was quoted?
How par pricing, discount points, and lender credits give you a menu of choices.
Read guideHow much cash do I actually need to close?
Beyond your down payment: closing costs, prepaids, and fees explained.
Read guideBrowse all of our plain-English mortgage guides
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