Mortgage Points Calculator
Should I Buy Discount Points?
Use this free mortgage points calculator to see if paying discount points to lower your rate is worth it — and exactly when you break even.
What Is a Mortgage Points Calculator?
Mortgage discount points are upfront fees paid to the lender at closing in exchange for a permanently lower interest rate. One point equals 1% of the loan amount. This calculator determines whether paying points makes financial sense by calculating your break-even period — the number of months until your accumulated monthly savings exceed the upfront cost.
Paying points is most beneficial when you plan to keep the loan for many years. If you sell or refinance before reaching the break-even point, you lose money on the points. This calculator compares your no-points and with-points scenarios side by side.
The rate your lender quoted with zero points (par rate).
Cost: $3,500 · New rate: 6.750%
Break-Even Point
4 yr 12 mo
After 4 yr 12 mo, the monthly savings cover the upfront cost
Verdict
Worth It
Break-even is 4 yr 12 mo and you plan to stay 7 yr. You recover the upfront cost and save $1,411 net over your stay. Points make financial sense for you.
1 Point — Details
All Scenarios Compared
| Points | Cost | Rate | Payment | Break-even | Net savings |
|---|---|---|---|---|---|
| 0 (par) | — | 7.000% | $2,329 | — | — |
| 0.5 pts | $1,750 | 6.875% | $2,299 | 4 yr 12 mo | $712 |
| 1 pt | $3,500 | 6.750% | $2,270 | 4 yr 12 mo | $1,411 |
| 1.5 pts | $5,250 | 6.625% | $2,241 | 5 yr | $2,098 |
| 2 pts | $7,000 | 6.500% | $2,212 | 5 yr | $2,771 |
| 2.5 pts | $8,750 | 6.375% | $2,184 | 5 yr | $3,431 |
| 3 pts | $10,500 | 6.250% | $2,155 | 5 yr 1 mo | $4,078 |
Net savings = monthly savings × stay months − upfront point cost. Click any row to select it.
Not sure how many points your lender is offering?
A licensed loan officer can give you a full Loan Estimate with the exact rate reduction per point and help you decide which option fits your financial goals.
What Are Mortgage Discount Points?
Mortgage discount points are an upfront fee you pay to your lender in exchange for a permanently lower interest rate. One point equals 1% of your loan amount — so on a $350,000 loan, one point costs $3,500. In return, your lender reduces your rate, typically by around 0.25 percentage points per point, though the exact amount varies by lender and market conditions.
Points are sometimes called "buying down the rate." They are optional — you can always take the par rate (zero points) and keep your cash. Whether buying points makes sense depends entirely on one thing: how long you plan to stay in the home.
How to Use This Mortgage Points Calculator
Step 1 — Enter your loan details
Enter the loan amount (purchase price minus down payment), the base interest rate your lender quoted with zero points, and your loan term. The base rate is your starting point — it is what you get if you pay nothing extra upfront.
Step 2 — Select how many points to buy
Choose from 0 to 3 points. The comparison table at the bottom updates in real time to show all scenarios side by side — cost, new rate, monthly payment, break-even, and net savings for every option. Click any row to see the full details for that scenario.
Step 3 — Set how long you plan to stay
This is the most important input. Buying points is only worth it if you stay past the break-even point. If there is any chance you will sell or refinance before then, keeping your cash makes more sense.
Step 4 — Adjust rate reduction per point (Advanced)
The default is 0.25% per point, which is the industry standard estimate. But your lender may offer more or less depending on market conditions. Check your Loan Estimate for the exact figure and enter it in the Advanced section for precise results.
The Break-Even Rule
The break-even point is the number of months it takes for your monthly savings to equal the upfront cost of the points. If you stay longer than the break-even, buying points puts money in your pocket. If you move or refinance before it, you lose money on the deal.
A typical break-even on one point is 3–5 years. If your break-even is under 3 years, buying points is almost always a strong move. If it is over 7 years, think carefully about whether you are confident you will stay that long. Life changes — job relocations, growing families, and refinances all cut the analysis short.
Points vs. Larger Down Payment
If you are choosing between using extra cash to buy points or to increase your down payment, the down payment often wins. A larger down payment immediately reduces your loan balance, eliminates PMI if you reach 20%, and lowers your monthly payment permanently without a break-even calculation to worry about.
That said, if you are already at 20% down and want to reduce your rate further, points become a more attractive option — especially in a high-rate environment where even a small rate reduction produces meaningful monthly savings on a large loan.
When Buying Points Makes the Most Sense
You plan to stay long-term
Points reward patience. If you are buying a forever home or planning to stay 10+ years, the math almost always favors buying points — especially at 1–2 points where the break-even is typically under 5 years.
Rates are high and likely to stay high
When rates are elevated, each fraction of a percent savings on a large loan produces bigger monthly savings. The break-even shortens, making points more attractive.
You have cash to spare after closing
Never buy points if it drains your emergency fund or requires you to put less than 20% down and pay PMI. The savings from avoiding PMI will almost always beat the savings from a lower rate.
You are not planning to refinance soon
If you expect to refinance within a few years when rates drop, buying points is usually a mistake — you will not hold the loan long enough to break even, and refinancing resets the clock entirely.
This calculator provides estimates for informational purposes only and does not constitute financial or lending advice. Actual rate reductions per point vary by lender and market conditions. Always request a Loan Estimate to compare offers.
When Paying Mortgage Points Makes Financial Sense
Buying points makes sense when you plan to stay in the home past the break-even period. The longer you keep the loan, the more you benefit from the permanently lower rate. Points are most valuable in a high-rate environment where even a small rate reduction creates significant monthly savings on a large loan balance. They're least useful if you're likely to refinance or sell within 5–7 years — you leave before recovering the upfront cost. Points also make more sense if you've already reached 20% down and eliminated PMI, since the PMI savings floor no longer competes for your extra closing cash. This mortgage points calculator shows your exact break-even so you can make the call based on your real plans, not rules of thumb.
How Mortgage Points Affect Your Total Interest
One discount point costs 1% of the loan amount and typically reduces your rate by 0.25%, though this varies by lender and market conditions. On a $400,000 loan, one point costs $4,000 and saves roughly $55–$65/month in payment. Over 30 years, that's $20,000+ in total interest savings — but you need to stay in the loan long enough to recover the upfront cost first. The break-even is what determines whether buying points is profitable. This calculator models the full 30-year interest comparison for each point option so you can see both the short-run break-even and the long-run total interest impact at once.
Points vs. Larger Down Payment — Which Is Better?
Both buying points and making a larger down payment reduce your monthly payment, but through different mechanisms. A larger down payment reduces your principal balance (and may eliminate PMI), while points reduce your interest rate. If you have extra cash at closing and are below 20% down, reaching 20% first is almost always the better use of money — eliminating PMI typically provides a better return per dollar than buying points. Once you're above 20%, the comparison becomes closer and depends on your break-even versus how long you plan to stay. This mortgage points calculator can help you model both scenarios to find the most effective use of available closing funds.
Frequently Asked Questions
What are mortgage discount points?
Mortgage discount points are upfront fees paid to the lender at closing to permanently reduce your interest rate. One point equals 1% of the loan amount. For example, on a $300,000 loan, one point costs $3,000. In exchange, your lender typically reduces your rate by about 0.25%, though the exact reduction varies by lender.
How do I calculate the break-even on mortgage points?
Divide the total cost of the points by your monthly payment savings. For example, if you pay $4,000 for points and save $60/month, your break-even is 67 months (about 5.5 years). If you plan to stay in the home longer than that, buying points saves you money. This mortgage points calculator does this automatically.
Are mortgage points tax deductible?
In many cases, yes — mortgage discount points paid on a primary home purchase are tax deductible in the year paid, subject to IRS guidelines. Points paid on a refinance must typically be deducted over the life of the loan rather than all at once. Always consult a tax professional for advice specific to your situation.
How many mortgage points should I buy?
There's no universal answer — it depends on how long you plan to keep the loan. Run the break-even calculation for different point amounts (0.5, 1, 1.5, 2 points) and compare against your expected time in the home. This mortgage points calculator shows all scenarios side by side so you can find the right balance.
What is the difference between discount points and origination fees?
Discount points are optional — you choose to pay them to lower your rate. Origination fees are lender charges for processing the loan — they don't reduce your rate. Both appear on your Loan Estimate as prepaid costs. Make sure you're comparing apples to apples when shopping lenders: a lender offering a lower rate may be charging more in origination fees.
Formula & Methodology
Each scenario is evaluated using the standard amortization formula at its respective interest rate. The break-even is calculated by dividing the upfront points cost by the monthly payment savings. Total interest paid over the full loan term is also compared to show the long-run impact.
One discount point typically reduces the rate by 0.25%, though this varies by lender and market conditions.
References
- Freddie Mac. "Understanding Mortgage Points." freddiemac.com
- Consumer Financial Protection Bureau. "What are mortgage points?" consumerfinance.gov
- Fabozzi, F. J. (2005). The Handbook of Fixed Income Securities. McGraw-Hill.
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