Are discount points tax-deductible?

In some cases, yes—points may be deductible as prepaid interest, especially on a primary residence purchase, but rules are complex and may require amortizing the deduction over the life of the loan. This calculator does not model tax effects, so always check with a tax professional.

Should I pay points on an ARM or only on fixed-rate loans?

Points on adjustable-rate mortgages can be trickier because the rate may change before you reach breakeven. This calculator assumes a fixed rate for the whole term; if you’re evaluating an ARM, compare the breakeven period to the fixed period in the ARM and discuss details with your lender.

Can I roll points into the loan instead of paying them in cash?

Some lenders allow you to finance points by increasing your loan amount, but that changes the math because you pay interest on the points as well. This tool assumes points are paid in cash; if you plan to finance them, treat that as a distinct scenario and consider comparing APR or running a more detailed model.

How do lender credits fit into this?

Lender credits are the mirror image of points: you accept a higher rate in exchange for lower upfront costs. While this calculator is built for discount points, you can conceptually invert the logic by thinking about how much extra you pay each month versus how much cash you save at closing.

What if rates drop and I refinance early?

If you refinance before reaching breakeven, you will not fully recover the points cost through monthly savings. When you expect a possible refinance, be more cautious about paying points and favor structures with lower breakeven periods.

finance calculator

Mortgage Points Breakeven Calculator

Estimate monthly savings from discount points and how long it takes to break even.

Results

Payment without points: $2,661 USD
Payment with points: $2,528 USD
Monthly savings: $133 USD
Points cost: $6,000 USD
Breakeven (months): 45.13
Breakeven (years): 3.76

Overview

Mortgage discount points are one of those line items that show up on a quote and immediately raise a question: is this actually worth it? You pay cash up front at closing in exchange for a slightly lower interest rate, but the tradeoff only makes sense if you keep the loan long enough for the monthly savings to pay back the cost. This mortgage points breakeven calculator turns that tradeoff into concrete numbers by comparing the payment with and without points, then showing how many months and years it takes to break even.

How to use this calculator

Enter your expected loan amount and term (in years). For a purchase, this is typically the price minus your down payment; for a refinance, use the new loan amount you plan to take out.
Enter the base APR you would pay if you did not buy any points, then enter the lower APR offered if you pay points at closing. These should come from the same lender quote or lock sheet so the comparison is apples‑to‑apples.
Enter the points cost as a percentage of the loan amount (for example, 1.0 or 1.5). If your quote lists multiple combinations of points and rates, you can run each pair separately.
Review the calculated monthly payments for the no‑points and with‑points scenarios, and note the monthly savings from choosing the lower rate.
Check the breakeven months and years to see how long you need to keep the loan for the upfront points to pay for themselves via lower payments.
Compare that breakeven horizon to your realistic plans: how long you expect to stay in the home, whether you may refinance, and how much cash you are comfortable paying at closing.

Inputs explained

Loan amount: The principal balance on the mortgage you are comparing, typically the purchase price minus down payment for a purchase or the new principal for a refinance. Points cost and monthly payments are calculated from this amount.
Rate without points (APR): The annual percentage rate you would pay if you declined to buy any discount points. This is your baseline pricing for the loan.
Rate with points (APR): The lower annual percentage rate offered if you pay discount points up front. Buying points is essentially prepaying some interest to secure this reduced rate.
Points cost (% of loan): The percentage of the loan amount paid at closing as discount points. For example, 1.5 means you pay 1.5% of the loan amount (0.015 × loan) in exchange for the lower rate.
Term (years): The mortgage term in years (such as 30 or 15). The calculator uses this term for both the base‑rate and points scenarios when computing monthly principal‑and‑interest payments.

How it works

You enter the loan amount, the rate you’d pay without buying points (base rate), the lower rate you would receive if you buy points, the points cost as a percentage of the loan, and the term in years. The calculator treats both scenarios as standard fixed‑rate, fully amortizing loans with the same loan amount and term—only the interest rate differs.

For each rate, we compute the monthly principal‑and‑interest payment using the standard amortization formula: Payment = P × [r(1+r)^n] ÷ [(1+r)^n − 1], where P is the loan amount, r is the monthly interest rate (APR ÷ 12), and n is the total number of payments (term in years × 12). This gives you Payment without points and Payment with points.

Points cost is calculated as Loan amount × Points %. For example, on a $400,000 loan, 1.5 points means 0.015 × 400,000 = $6,000 paid up front at closing in addition to your other closing costs.

Monthly savings is simply the difference between the two payments: Monthly savings = Payment without points − Payment with points. This shows how much you save on your mortgage payment each month by choosing the lower rate with points.

Breakeven months are then computed as Points cost ÷ Monthly savings (when monthly savings is positive). The result tells you how many months of reduced payments it takes for the cumulative savings to equal the upfront points cost. Breakeven years are breakeven months ÷ 12 for easier interpretation.

If the discounted rate does not actually lower your payment (for example, because of input errors or an unusual pricing structure), monthly savings will be zero or negative and the calculator shows breakeven as 0 to signal that paying points does not make economic sense in this simplified framework.

This breakeven calculation focuses purely on cash‑flow savings in the payment amount. It does not account for tax deductibility of points, the time value of money, potential future refinances, or changes in your plans to sell or move—but it gives you a clear starting point for deciding whether points are worth exploring further.

Formula

Monthly rate (base) = Base APR ÷ 12
Monthly rate (discounted) = Discounted APR ÷ 12
n = Term (years) × 12
Payment(base) = P × r_base(1+r_base)^n ÷ [(1+r_base)^n − 1]
Payment(discounted) = P × r_disc(1+r_disc)^n ÷ [(1+r_disc)^n − 1]
Monthly savings = Payment(base) − Payment(discounted)
Points cost = Loan amount × Points%
Breakeven months = Points cost ÷ Monthly savings (if savings > 0)
Breakeven years = Breakeven months ÷ 12

When to use it

Comparing multiple lender quotes where one offer has a higher rate with low/no points and another has a lower rate but more points, to see which structure makes sense given how long you plan to keep the loan.
Checking whether paying points on a refinance is worthwhile if you think you might move or refinance again within a few years—short horizons often favor lower upfront costs over lower rates.
Helping decide between spending extra cash on points versus applying that same cash toward a larger down payment or other financial goals like debt payoff or savings.
Explaining the tradeoff between points and rate to a spouse or partner using concrete numbers instead of jargon, so you can align on a closing cost strategy.
Stress‑testing how sensitive the decision is to small changes in rate: for example, seeing whether the breakeven changes much if the points only buy you a 0.125% reduction instead of 0.25%.

Tips & cautions

If you expect to sell the home or refinance within a few years, be cautious about paying points. A breakeven period longer than your expected time in the loan usually means points are not worthwhile from a pure payment‑savings perspective.
Consider your cash reserves. Money spent on points is cash you cannot use for closing costs, moving expenses, emergency savings, or early principal payments; make sure paying points does not leave you too tight on cash.
Run the calculator with slightly lower and slightly higher loan amounts, points percentages, and rates to see how robust your decision is. Good deals typically remain good across a range of reasonable assumptions.
Remember that the value of points can vary by lender and market conditions. If the breakeven horizon is very long, ask your lender whether a different points/credit structure is available or shop alternative lenders.
Pair this calculator with a refinance breakeven or APR comparison tool when evaluating refis so you capture both closing costs and points in your decision.
The breakeven math here is purely static and does not discount future savings for the time value of money. A more rigorous analysis would treat the points cost as a cash outflow today and the monthly savings as a stream of future cash flows and then compute an internal rate of return (IRR).
Tax treatment of points is not modeled. In some cases, points may be deductible in the year paid or over time, which can change the effective cost. Always consult a tax professional before making decisions based on potential tax benefits.
The calculator assumes you make only required payments and hold the loan for at least as long as the breakeven period. If you make extra principal payments or refinance early, actual savings may differ.
It does not incorporate lender credits, other closing costs, or mortgage insurance. You should consider those fees separately when comparing full loan offers.
Interest rates and pricing can change quickly. Treat the results as a snapshot based on your current quote and update them if rates move or you receive revised offers.

Worked examples

$400k loan, 7.0% base rate vs 6.5% with 1.5 points, 30-year term

Loan amount = $400,000; Base APR = 7.0%; Discounted APR = 6.5%; Points% = 1.5; Term = 30 years.
Monthly rate (base) ≈ 0.07 ÷ 12 ≈ 0.005833; n = 30 × 12 = 360.
Payment(base) ≈ $2,661; Payment(discounted) ≈ $2,528 (values rounded for illustration).
Monthly savings ≈ 2,661 − 2,528 = $133.
Points cost = 400,000 × 0.015 = $6,000.
Breakeven months ≈ 6,000 ÷ 133 ≈ 45 months; Breakeven years ≈ 3.7 years.
Interpretation: If you expect to keep this mortgage for significantly more than 4 years and have the cash available, paying 1.5 points may be reasonable to secure the lower rate.

$300k loan, 6.75% base vs 6.5% with 1 point, 30-year term

Loan amount = $300,000; Base APR = 6.75%; Discounted APR = 6.5%; Points% = 1.0.
Payment(base) and Payment(discounted) differ by roughly $47/month (example value).
Points cost = 300,000 × 0.01 = $3,000.
Breakeven months ≈ 3,000 ÷ 47 ≈ 63.8 months; Breakeven years ≈ 5.3 years.
Interpretation: With a breakeven over 5 years, points are less attractive if you expect to move or refinance within that window.

Shorter 15-year term with the same points offer

Using the $300,000 example but with a 15-year term, monthly savings from a small rate drop are often smaller because the term is shorter and more payment goes to principal.
Assume monthly savings is only about $28/month while points still cost $3,000.
Breakeven months ≈ 3,000 ÷ 28 ≈ 107 months; Breakeven years ≈ nearly 9 years.
Interpretation: On shorter terms, it is harder for points to pay back unless the rate reduction is meaningful or you are almost certain to keep the loan for a long time.

Deep dive

This mortgage points breakeven calculator compares your payment with and without discount points, shows your upfront points cost, and calculates how many months and years it takes for lower payments to pay back that cost.

Use it to decide whether paying points at closing makes sense given how long you expect to keep the loan, your available cash, and your other financial priorities like down payment, closing costs, and emergency savings.

Because the tool breaks out payment changes, points cost, and breakeven clearly, it can help you negotiate with lenders, evaluate competing quotes, and explain points decisions to partners without getting lost in the math.

FAQs

Are discount points tax-deductible?: In some cases, yes—points may be deductible as prepaid interest, especially on a primary residence purchase, but rules are complex and may require amortizing the deduction over the life of the loan. This calculator does not model tax effects, so always check with a tax professional.
Should I pay points on an ARM or only on fixed-rate loans?: Points on adjustable-rate mortgages can be trickier because the rate may change before you reach breakeven. This calculator assumes a fixed rate for the whole term; if you’re evaluating an ARM, compare the breakeven period to the fixed period in the ARM and discuss details with your lender.
Can I roll points into the loan instead of paying them in cash?: Some lenders allow you to finance points by increasing your loan amount, but that changes the math because you pay interest on the points as well. This tool assumes points are paid in cash; if you plan to finance them, treat that as a distinct scenario and consider comparing APR or running a more detailed model.
How do lender credits fit into this?: Lender credits are the mirror image of points: you accept a higher rate in exchange for lower upfront costs. While this calculator is built for discount points, you can conceptually invert the logic by thinking about how much extra you pay each month versus how much cash you save at closing.
What if rates drop and I refinance early?: If you refinance before reaching breakeven, you will not fully recover the points cost through monthly savings. When you expect a possible refinance, be more cautious about paying points and favor structures with lower breakeven periods.

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This mortgage points breakeven calculator is for educational and planning purposes only. It uses simplified amortization math and does not incorporate tax treatment, lender credits, mortgage insurance, or the time value of money. Actual loan terms, pricing, and benefits of paying points depend on your full financial profile and market conditions. Review official loan estimates and consult with your lender and a qualified tax or financial professional before deciding whether to pay discount points.