Should I Buy Down the Rate With Discount Points?

Discount points only pay off if you keep the loan long enough to recover what you paid up front through monthly savings. The decision is almost entirely about your staying horizon. One discount point typically costs 1% of the loan amount and buys somewhere around 0.25% off the rate (the exact ratio varies by lender, market, and program). Divide the point cost by the monthly P&I savings — that's your break-even in months. Plan to keep the loan well past break-even? Points usually win. Likely to sell or refinance before then? Don't buy them. There's also a reverse mechanism — lender credits — that does the opposite: the lender pays your closing costs in exchange for accepting a higher rate.

The handbook view (what the rules actually say)

Discount points have specific regulatory definitions across TRID, the IRS code, and agency selling guides:

• TRID disclosure (Loan Estimate): Discount points are disclosed in Section A of the LE under "Origination Charges," with both the dollar cost and the % of loan amount shown. They are a zero-tolerance fee on the LE — the lender can't increase the cost from LE to CD without a valid change-of-circumstance. (Source: 12 CFR 1026.37(f)(1); 12 CFR 1026.19(e)(3)(i).)
• Tax deductibility (IRS Publication 936): Points paid on a purchase loan for your main home may be fully deductible in the year paid if they meet several tests (loan secured by main home, points are an established practice in the area, points charged don't exceed the amount generally charged, they're computed as % of loan, etc.). Points on a refinance generally must be deducted over the life of the loan, not in the year paid. (Source: IRS Publication 936, "Home Mortgage Interest Deduction," section on points.) Confirm with a tax professional.
• Permanent vs. temporary buydown: A permanent buydown lowers the note rate for the life of the loan. A temporary buydown (2-1, 3-2-1, or 1-0) lowers the effective rate by 1-3% in the first 1-3 years; the note rate goes back to the full rate thereafter. Temporary buydown funds sit in an escrow account and subsidize the borrower's payment monthly. (Source: Fannie Mae Selling Guide B2-1.4-04, Temporary Interest Rate Buydowns.)
• Lender credits: The inverse of discount points. The lender credits dollars toward your closing costs in exchange for you accepting a higher note rate. On the LE, lender credits appear at the bottom of Page 2 under "Lender Credits." (Source: 12 CFR 1026.37(g)(6); 12 CFR 1026.19(e)(3) — lender credits are subject to their own tolerance rules.)
• Seller-paid points: A seller credit can be directed into discount points within the program's Interested Party Contribution (IPC) cap — 3-9% Conventional, 6% FHA, 4% VA. (Source: Fannie Mae Selling Guide B3-4.1-02; HUD Handbook 4000.1, II.A.5.c; VA Lenders Handbook Pamphlet 26-7, Chapter 8.)

The plain-English translation

Discount points are simple in principle and easy to get wrong in practice:

• One point = 1% of loan amount. On a $400K loan, 1 point is $4,000 paid at closing. That money buys a permanently lower rate.
• The rate reduction per point varies. A common range is 0.125% to 0.375% per point, with 0.25% being the rule-of-thumb middle. The actual number depends on the lender, the program, and how the rate sheet is priced that day. Always ask for the actual cost-per-rate quote — don't assume.
• Break-even formula: Point cost ÷ monthly P&I savings = break-even in months. Example: $4,000 point cost ÷ $60/month savings = 67 months, or about 5.5 years. If you'll keep the loan past that, the points pay off. If not, you lose the upfront money.
• Permanent vs. temporary: A permanent buydown is real cash that changes your note rate forever. A temporary buydown (2-1 / 3-2-1) is a payment subsidy that runs out — it's useful when you expect income to grow or rates to fall, but the long-term math is the full note rate.
• Lender credits run the math in reverse. The lender gives you, say, $4,000 toward closing costs in exchange for you taking a rate that's ~0.25% higher. That extra rate costs you ~$60/month more. Same 67-month break-even — past that point, the credit was the wrong call. Used right (short staying horizon, cash-tight at closing), lender credits are an underused tool.

Break-even by staying horizon

The table is a guideline, not a quote. The actual break-even depends on the exact rate differential the lender quotes per point, which varies day-to-day with the rate-sheet market. The right move is to actually price three quotes — with points, at par, with lender credits — and compare break-evens against your honest staying horizon.

Lender overlays — where the rules get tighter

The cost-per-point ratio isn't handbook-fixed — it's priced off each lender's rate sheet, which means the value of a point varies materially:

• Rate-sheet pricing varies: Two lenders looking at the same borrower and same loan can quote different point-to-rate ratios. One might give you 0.25% off for 1 point; another might give you 0.375% off for the same point. As an independent broker we have access to multiple wholesale rate sheets, so the cost-per-rate decision gets shopped, not assumed.
• Maximum points caps: Some lenders cap how many discount points a borrower can buy (1.5%, 2%, 3%, etc.). This matters when a large seller credit is available and the strategy is to dump as much of it as possible into a permanent buydown.
• Temporary buydown availability: Not every lender offers 2-1 or 3-2-1 temporary buydowns. Some only offer them on conventional, not on government loans. Some require the seller (not the borrower) to fund the buydown. Confirm the specific product is on offer before structuring the deal around it.
• QM points-and-fees test: A loan can't be a Qualified Mortgage (QM) if total points and fees exceed roughly 3% of the loan amount (the threshold steps higher for smaller loans). Most borrowers never hit this, but on a smaller loan with heavy buy-down, it can constrain the structure. (Source: 12 CFR 1026.43(e)(3).)

Which lenders we actually use for this scenario

Every lender prices discount points on the same daily rate sheet they use for the par rate — the point cost and the par rate are two ends of the same continuum. So this isn't really about which lender; it's about which lender's rate sheet has the best pricing curve on the day you lock. On the broker channel I'm shopping multiple wholesale rate sheets simultaneously and watching where each one's pricing breaks. Sometimes lender A is best at par and lender B is best at one point bought down — same buyer, same scenario, different optimal lender at different point positions.

Wholesale-channel lenders typically have flatter, more competitive pricing curves on points because their cost of funds is lower than retail and they're not paying for branch overhead on every loan. Direct retail lenders sometimes have promotional pricing on specific point configurations — “we'll buy your rate down to X%” campaigns — and that can pencil out for the right buyer in the right month. The trap is treating those promotions as a permanent feature instead of a snapshot.

Now here's the thing I want to flag because nobody else will say it out loud. Loan officer compensation is sometimes structured so that the LO earns more when the buyer pays discount points — either because the points-paid version of the loan has a higher commissionable balance or because the lender pays an LO bonus on certain pricing configurations. That isn't true at every shop, and on the broker side our compensation is set by the broker-lender agreement and locked per file, but the incentive exists and you should know it exists. The reverse mechanism — lender credit, which is the buyer taking a slightly higher rate in exchange for the lender paying toward closing costs — gets pitched far less often than points do, even though for a buyer who's short on cash at the table and plans to refinance later, lender credit is frequently the better trade. Ask your LO to quote it both ways. If they push back or skip the credit side, that tells you something.

Real-world cases

I've seen this pattern often — buyer plans to keep the home “forever,” runs the break-even math, finds out the points pay for themselves in about 60 months, and pays the points. Eight years later they refinance because rates dropped 1.5% and the points-paid loan goes away. They came out ahead on the points anyway because they held past break-even, but the original “forever” framing was wrong — most people don't keep the same loan as long as they think they will. (Illustrative composite — actual break-even varies by file and market.)

Another pattern — short-horizon buyer who's relocating in 3 years for work, talks themselves into buying points anyway because the lower rate “looks better.” Break-even on their file was over 6 years. They paid several thousand dollars in points to save a few hundred over their actual holding period. That's the textbook bad trade and I see it more often than I'd like, usually because someone showed them the lower monthly payment without showing the break-even alongside it.

Third pattern — buyer who can't quite qualify at the par rate because the debt-to-income ratio is tight. Buying down the rate one or two notches drops the P&I enough to get the DTI inside the program guideline and the loan approves. In that scenario points are doing a different job — they're a qualifying lever, not a long-term economics decision. Sometimes that's the right call. Other times the better move is to look at a different program, a co-borrower, or a smaller loan amount. (Illustrative composite.)

How the big retail lenders typically handle this

Two patterns I see on retail-channel buydowns. First, the “2-1 buydown” and “3-2-1 buydown” — these are temporary buydowns where someone (often the seller, sometimes the lender) prepays into an escrow account to subsidize the buyer's payment for the first 1-3 years before it steps up to the note rate. They're allowed under Fannie B2-1.4-04 and parallel Freddie/FHA guidance. They're not the same thing as discount points. Temporary buydowns can be useful in specific circumstances — usually when a seller wants to incentivize a buyer in a slow market and the seller's IPC budget would otherwise go to waste. They're heavily marketed and frequently misunderstood. The buyer needs to qualify at the full note rate, not the buydown rate, so the temporary buydown doesn't help qualifying. (See the seller-paid-closing-costs answer for the IPC cap interaction.)

Second, the retail pitch around “buy your rate down to X%” is usually quoted against a hypothetical par that's already inflated. If lender A's par rate is genuinely lower than lender B's buydown rate, you didn't buy anything down — you just paid points to land at someone else's par. The only way to know the difference is to compare LE-to-LE across multiple lenders on the same day with the same point configuration. Side-by-side rate sheets, not advertising headlines.

The under-recommended option remains lender credit. If you're cash-constrained at closing or you're confident you'll refinance inside three to five years, taking a slightly higher rate in exchange for the lender paying your closing costs is often the right trade. Most retail shops will quote it if you ask. Few will lead with it.

A simple decision rule

For a borrower trying to decide whether to buy points, the cleanest 30-second filter:

1. 1Calculate the break-even: point cost ÷ monthly P&I savings = months to break even.
2. 2Honestly assess your staying horizon. Will you keep this exact loan past break-even? Account for likely refis if rates drop materially.
3. 3If horizon is well past break-even and you have the cash without straining reserves: buy the points. If horizon is short or cash is tight: take par or lender credits.
4. 4If a seller credit is in play, directing it to a permanent buydown is often the best use — the cash isn't yours to begin with, so the break-even calculus shifts in your favor.