Should I Buy Mortgage Points?
Pay $8,000 today to save $65.40 a month — good deal or expensive mistake? The answer is a single number: the break-even point. On a $400,000 loan, buying the rate down from 6.5% to 6.25% takes 10.2 years to pay for itself. Stay longer and you win; leave earlier and you paid for a discount you never collected. Here's the full math, plus the two alternatives lenders never quote.
What points actually buy
One "point" = 1% of the loan amount, paid at closing as prepaid interest. Two points on a $400,000 loan = $8,000 out of pocket on day one. In exchange, the lender drops your rate — typically about 0.25 percentage points per point, so 2 points might take you from 6.5% to 6.25%. The exact discount varies; always get the lender's specific quote rather than assuming the 0.25 rule.
Worked example: $400,000 at 6.5% vs 6.25%
- No points, 6.5%, 30 years: $2,528.27/month, total interest about $510,178.
- 2 points ($8,000), 6.25%, 30 years: $2,462.87/month, total interest about $486,633 + $8,000 points = $494,633.
- Monthly savings: $65.40. Break-even: $8,000 ÷ $65.40 ≈ 122 months (10.2 years).
Alternative 1: invest the $8,000 instead
Points aren't the only use of $8,000. Invested at 7%, it grows to about $15,952 by the 10.2-year break-even mark — while the points have merely repaid themselves to zero net. Over 30 years that $8,000 becomes roughly $60,898, dwarfing the points' $15,545 lifetime gain. The honest comparison isn't "points vs nothing" — it's "points vs every other use of the cash."
Alternative 2: put the $8,000 toward the down payment
Borrow $392,000 instead of $400,000 at 6.5%: the payment falls to $2,477.71 — a $50.57/month saving with no break-even period at all, since there's no upfront cost to recover. Total interest saved: about $18,204. It saves less per month than the points ($50.57 vs $65.40), but it starts saving on day one, helps your loan-to-value (closer to dropping PMI), and the money isn't lost if you move early.
How to compare quotes like a skeptic
Lenders rarely hand you a clean "0 points vs 2 points" choice — you have to construct it. Ask every lender for quotes at 0, 1, and 2 points on the same day (rates move daily; comparing Monday's 0-point quote to Wednesday's 2-point quote is meaningless). Then:
- Compare the note rate, not the APR. The APR bakes points and fees into a yearly rate, which makes points look deceptively cheap — the APR assumes you keep the loan the full term. Your break-even math with the note rate and actual dollars is more honest for your real timeline.
- Read the Loan Estimate, page 2. Section A shows origination charges (that's where points live). Compare the total closing costs across quotes, not just the points line — a lender offering "no points" may have padded other fees.
- Watch for the float. A quote with points is only real if the rate is locked. An unlocked quote can drift before closing, and the break-even you computed belongs to a rate you never got.
- Ask about lender credits too. "Negative points" — taking a slightly higher rate for cash toward closing — is the mirror image. If you're unsure you'll stay past break-even, credits are often the smarter direction.
When points actually make sense
- You're staying put well past break-even. A forever home where 10.2 years is a near-certainty, not a hope.
- You have cash to spare after closing. Points should never drain the emergency fund or the moving budget. Cash-poor buyers should keep the $8,000 liquid.
- Rates are high and you expect to stay. The higher the rate, the more each 0.25-point cut saves monthly — and the shorter the break-even. (Falling-rate environments punish points: a refinance restarts the clock and strands the unrecovered cost.)
- The seller is paying. Seller concessions toward "closing costs" can fund points with money that isn't yours — different math entirely.
Assumptions and limits
Figures assume a $400,000 fixed-rate 30-year loan, 2 points = $8,000 buying exactly 0.25% off the rate, no other fee differences between the quotes, and the loan held to each stated horizon — validated against the amortization math our calculators use. Real quotes vary by lender and day; tax deductibility depends on your situation. Estimates for learning the math, not financial or tax advice.