Mortgage Points Calculator
Find out if paying for lower mortgage points makes financial sense — and exactly how many months until you break even.
🏡 What are Mortgage Discount Points?
Mortgage discount points are upfront fees paid at closing to permanently reduce the interest rate on a home loan. One discount point equals 1% of the loan amount. For a $400,000 mortgage, buying 2 points costs $8,000 at closing — in exchange for a lower monthly payment for the life of the loan. The term "buying down the rate" refers exactly to this trade: spend more today to spend less every month for 15, 20, or 30 years.
The financial logic of points is straightforward once you know one number: the break-even period. Each month you hold the mortgage, the lower payment saves you a specific dollar amount. At some point, the cumulative monthly savings exceed what you paid upfront for the points. That crossover month is the break-even. Stay in the home past break-even and points are profitable. Sell or refinance before break-even and points were a net loss.
In practice, the decision is nuanced. Points are generally tax-deductible on primary home purchases (IRS Publication 936), which reduces their effective cost and shortens the break-even. The rate reduction per point varies significantly by lender — typically 0.125% to 0.25% — and you must always confirm this figure in writing from your lender before basing a decision on it. Lenders are not required to offer the same rate-to-point relationship, and the variation across institutions is often larger than borrowers expect.
This calculator handles two scenarios. The first — "Points vs No Points" — takes a specific number of points and shows the exact break-even, monthly savings, and net savings over the full loan term. The second — "Target Rate" — works in reverse: enter the rate you want and the rate reduction per point, and the calculator tells you exactly how many points you need and what they will cost. Both modes support 15, 20, and 30-year terms and adjust to any currency.
📐 Formula
Upfront Cost = Loan Amount × Points ÷ 100
Points = number of discount points (1 point = 1% of loan)
Example: $400,000 loan × 2 points ÷ 100 = $8,000 upfront
Rate With Points = Base Rate − (Points × Rate Reduction per Point)
Rate Reduction per Point = typically 0.125% to 0.25% (ask your lender)
Example: 7.00% − (2 × 0.25%) = 6.50%
Break-Even (months) = Upfront Cost ÷ Monthly Savings
Monthly Savings = Payment (base rate) − Payment (with points)
Monthly Payment = P × r(1+r)n ÷ ((1+r)n − 1), where r = monthly rate, n = months
Net Lifetime Savings = Monthly Savings × Total Months − Upfront Cost
Example: $8,000 upfront, $109/mo savings → break-even = $8,000 ÷ $109 = 73.4 months (6.1 years)
📖 How to Use This Calculator
Steps
1
Choose a mode — Select 'Points vs No Points' if you want to evaluate a specific number of points your lender is offering, or 'Target Rate' if you know what rate you want and need to find how many points to buy.
2
Enter your loan details — Input the loan amount and the interest rate your lender quoted without any discount points. Get both figures from your official Loan Estimate (LE) document.
3
Enter points information — Input the number of points you are considering and the rate reduction per point your lender has confirmed. Ask your lender explicitly for this figure — it is not standardized and varies by institution.
4
Select your loan term — Choose 15, 20, or 30 years. The break-even is the same regardless of term, but the net lifetime savings depends on how long the loan runs.
5
Compare break-even to your expected stay — If you confidently plan to stay more than double the break-even period, points are a sound financial choice. If there is any chance of a move or refinance before break-even, skip the points.
💡 Example Calculations
Example 1 — 1 Point on a $350,000 Mortgage at 7%
$350,000 loan — 7.00% base rate — 1 point — 0.25% rate reduction per point — 30 years
1
Upfront cost: $350,000 × 1% = $3,500. Rate with 1 point: 7.00% − 0.25% = 6.75%.
2
Monthly payment at 7.00%: $2,328.54. Monthly payment at 6.75%: $2,270.06. Monthly savings: $2,328.54 − $2,270.06 = $58.48/month.
3
Break-even: $3,500 ÷ $58.48 = 59.8 months (5.0 years). Net lifetime savings over 30 years: $58.48 × 360 − $3,500 = $21,053 − $3,500 = +$17,553.
Upfront: $3,500 — Monthly savings: $58.48 — Break-even: 5.0 years — Lifetime: +$17,553
Try this example →Example 2 — 2 Points on a $500,000 Mortgage at 7.5%
$500,000 loan — 7.50% base rate — 2 points — 0.25% per point — 30 years
1
Upfront cost: $500,000 × 2% = $10,000. Rate with 2 points: 7.50% − 0.50% = 7.00%.
2
Monthly payment at 7.50%: $3,496.07. Monthly payment at 7.00%: $3,326.51. Monthly savings: $169.56/month.
3
Break-even: $10,000 ÷ $169.56 = 59.0 months (4.9 years). Net lifetime savings: $169.56 × 360 − $10,000 = $61,042 − $10,000 = +$51,042.
Upfront: $10,000 — Monthly savings: $169.56 — Break-even: 4.9 years — Lifetime: +$51,042
Try this example →Example 3 — Target Rate Mode: Reach 6.25% from 7.0%
$450,000 loan — current rate 7.00% — target rate 6.25% — 0.25% per point — 30 years
1
Rate reduction needed: 7.00% − 6.25% = 0.75%. Points needed: 0.75% ÷ 0.25% per point = 3 points. Upfront cost: $450,000 × 3% = $13,500.
2
Monthly payment at 7.00%: $2,993.87. Monthly payment at 6.25%: $2,770.67. Monthly savings: $223.20/month.
3
Break-even: $13,500 ÷ $223.20 = 60.5 months (5.0 years). Net lifetime savings: $223.20 × 360 − $13,500 = +$66,852.
3 points needed — Cost: $13,500 — Savings: $223.20/mo — Break-even: 5.0 years
Try this example →❓ Frequently Asked Questions
What are mortgage discount points?
Mortgage discount points are upfront fees paid at closing to reduce the interest rate on your loan. One point equals 1% of the loan amount. On a $400,000 mortgage, 1 point costs $4,000 and typically reduces the rate by 0.125% to 0.25%. The lower rate applies for the entire loan term, generating monthly savings that eventually recoup the upfront cost.
How do I calculate whether buying points is worth it?
Calculate the break-even period: Break-Even Months = Upfront Points Cost ÷ Monthly Savings. If you pay $4,000 for 1 point and save $55/month, break-even is $4,000 ÷ $55 = 72.7 months (about 6 years). If you plan to stay more than 6 years, points save money in total. If you might sell or refinance before 6 years, the upfront cost exceeds the cumulative savings and points are not financially justified.
How much does 1 discount point reduce the mortgage rate?
Typically 0.125% to 0.25% per point, depending on the lender and market. There is no universal standard — lenders set their own rate-to-point relationships. Always ask for the exact reduction per point in writing before making a decision. The value of a given rate reduction also depends on loan size: the same 0.25% reduction saves much more on $600,000 than on $200,000.
What is the break-even period for mortgage points?
The break-even period is the number of months you must keep the mortgage before cumulative monthly savings exceed the upfront points cost. Formula: Break-Even Months = Points Cost ÷ Monthly Savings. Example: 1 point on $350,000 = $3,500. Monthly savings from a 0.25% rate reduction at 7% over 30 years ≈ $58. Break-even = $3,500 ÷ $58 = 60 months (5 years). Every month after break-even is pure net savings.
How many points should I buy on my mortgage?
Buy points only if the break-even is comfortably shorter than your expected time in the home. Most advisors suggest: calculate break-even for each option your lender offers, then only buy points where break-even falls within 50–60% of your expected ownership period. Never buy points with funds that would otherwise avoid PMI — eliminating PMI (0.5–1.5%/year) generally yields a faster effective payback than buying down the rate.
Are mortgage points tax deductible?
Yes, for primary home purchases, discount points are generally fully deductible in the year paid as home mortgage interest (IRS Publication 936). For refinances, points are typically amortized over the loan term. The deductibility reduces the effective net cost of points by your marginal tax rate, shortening the break-even period. Consult a tax advisor for your specific situation, especially if you are subject to the AMT.
What is the difference between discount points and origination points?
Discount points reduce your interest rate — you pay upfront to lower the ongoing rate. Origination points (fees) are lender processing charges that do not change your rate. When comparing Loan Estimates, look at Section A (origination charges) vs Section B (discount points) separately. A loan with 1 origination point and 0 discount points may look comparable to one with 0 origination and 1 discount point — but only the latter actually lowers your rate.
Should I buy points or make a larger down payment?
A larger down payment usually wins if it eliminates PMI (typically at 20% down). PMI of 0.5–1.5% per year on a $400,000 loan costs $2,000–$6,000 annually — eliminating it by adding to the down payment often beats the savings from buying points. Above 20% down with no PMI, the comparison is closer and break-even math should drive the decision. Never drain emergency savings to buy points.
How do I calculate lifetime savings from discount points?
Lifetime Savings = (Monthly Savings × Total Months) − Upfront Points Cost. For a 30-year loan (360 months) with $58/month savings and $3,500 points cost: $58 × 360 − $3,500 = $20,880 − $3,500 = $17,380 net lifetime savings. Important caveat: most homeowners sell or refinance before the full term, so actual savings = monthly savings × months actually held − upfront cost.
What if I refinance after buying points?
Refinancing resets the clock. If you bought points and then refinance before break-even, the upfront cost is unrecovered — a net loss. Points only pay off through a refinance if the refinance happens after the original break-even date. In a potentially declining rate environment, the risk that refinancing will reset the clock before break-even makes points less attractive. In a stable or rising rate environment, point risk is lower.
Can I negotiate points with my lender?
Yes. The rate-to-point relationship is set by each lender and can vary significantly. Shopping 3–5 lenders (which counts as one inquiry within 45 days for credit scoring) often reveals major differences in point pricing for the same rate. A mortgage broker may access wholesale lenders with better point terms than retail banks. When comparing Loan Estimates, always evaluate rate and points cost together rather than rate alone.
What is a no-cost mortgage and how does it relate to points?
A no-cost mortgage covers closing costs by charging a slightly higher interest rate — the inverse of discount points. Instead of paying upfront to lower the rate, you accept a higher rate to eliminate closing costs. No-cost loans are advantageous when you plan to sell or refinance within 3–5 years, because the higher rate's cost over that period is less than the closing costs paid would have been. Points and no-cost loans sit at opposite ends of the upfront-vs-ongoing cost spectrum.