Mortgage Points Calculator Guide

Q: What is one mortgage discount point?

One discount point equals 1% of the loan amount paid upfront at closing. In exchange, the lender reduces your interest rate — typically by 0.20–0.25% per point, though the exact reduction varies by lender and market conditions. On a $300,000 loan, one point costs $3,000 and might reduce your rate from 6.75% to 6.50%.

Q: How do I calculate break-even on mortgage points?

Divide the cost of the points by the monthly savings they produce. If one point costs $3,000 and saves you $45/month, your break-even is 67 months (5.6 years). If you plan to stay in the home — or keep the loan — longer than that, buying the point saves money overall.

Q: Are mortgage points tax deductible?

Points paid on a refinance are not fully deductible in the year paid — they must be amortized over the life of the loan. For example, points on a 30-year refinance are deducted in equal amounts over 360 months. If you refinance again before payoff, any remaining deduction can be taken in the year of the second refinance. See IRS Publication 936 for details.

Q: What is the difference between discount points and origination points?

Discount points are prepaid interest you choose to buy to lower your rate. Origination points (also called origination fees) are what the lender charges to process the loan — they do not reduce your rate. The Loan Estimate labels them separately: Section A (origination charges) vs. Section A discount points.

What Are Mortgage Discount Points?

A discount point is prepaid interest: you pay 1% of the loan amount upfront at closing in exchange for a lower interest rate. One point on a $300,000 refinance costs $3,000. In return, the lender typically reduces your rate by 0.20–0.25%, though the exact "price per point" varies by lender and changes with market conditions.

Points are optional — you can always take the "par rate" (zero points) and pay no extra upfront. Whether paying points is smart depends entirely on one number: break-even. For a deeper explanation of how break-even works across all refinance scenarios, see our Break-Even Calculator Guide.

Do not confuse discount points with origination points. Discount points buy a lower rate. Origination points are a lender fee that does not reduce your rate. Your Loan Estimate labels them separately.

How to Use the Mortgage Points Calculator

The Mortgage Points Calculator takes your loan amount, the rate with and without points, and calculates:

The upfront cost of each point
The monthly savings from the lower rate
Your personal break-even month
Total savings at 5, 10, and 30 years

Inputs to Gather First

Before opening the calculator, pull your Loan Estimate and note: (1) the rate with zero points, (2) the rate with one point, (3) the rate with two points. Lenders often show multiple rate/point combinations in Section A. Enter each pair to compare break-evens side by side.

          Example: $320,000 refinance.

          Zero points: 6.75% → $2,075/mo P&I

          One point ($3,200): 6.50% → $2,023/mo P&I

          Monthly savings: $52 | Break-even: 62 months (5.2 years)

          If you plan to keep this loan 7+ years, the point pays off.

When Buying Points Makes Sense

You Plan to Stay Long-Term

Points reward patience. If your break-even is 48 months and you are confident you will keep the loan for 10+ years, buying points is mathematically optimal. The longer you hold, the more the upfront cost gets amortized across monthly savings.

Rates Are Unlikely to Drop Soon

If you are locking in because you believe rates have peaked or will stay flat, buying points to secure the lowest possible long-term payment makes sense. If rates are expected to fall and you plan to refinance again in 2–3 years, do not buy points — you will lose the money on the next refinance.

You Have Cash Available

Points only make sense if the cash you spend on them could not earn more elsewhere. At current savings rates of 4–5%, paying $3,000 upfront to save $52/month (a 20.8% annual return after break-even) often beats keeping the cash in a savings account — but run both scenarios in the calculator.

When to Skip Points

Short time horizon — selling, moving, or refinancing again within 3–4 years almost guarantees you will not reach break-even.
Rates are falling — buying points today locks in a rate you may be able to beat without points in 12–18 months.
Cash is tight — closing costs already strain your reserves; keep the cash for emergencies instead.
Long break-even — if the calculator shows 72+ months, skip the points unless you are absolutely certain of your timeline.

Points Break-Even Reference Table

Loan amount	Cost of 1 point	Rate reduction	Monthly savings	Break-even
$200,000	$2,000	0.25%	$28/mo	71 months
$300,000	$3,000	0.25%	$42/mo	71 months
$400,000	$4,000	0.25%	$56/mo	71 months
$300,000	$3,000	0.375%	$63/mo	48 months
$400,000	$4,000	0.375%	$84/mo	48 months

Note: monthly savings based on 30-year term at 6.75% base rate. Use the calculator with your actual numbers for a precise break-even.

For context on how break-even works in a broader refinance decision, see The Refinance Break-Even Point, Explained.

Points vs. Larger Down Payment / Paying Down Principal

Another way to frame the decision: instead of buying a lower rate with points, should you put that cash toward your loan balance? Paying down $3,000 of principal on a $300,000 loan at 6.75% saves roughly $17/month — far less than buying a rate reduction. Points almost always win on pure payment-savings math. The exception is if you are near an important LTV threshold (like 80%) where paying down to that threshold eliminates PMI.

Use the LTV Calculator to check where you stand before deciding between points and principal paydown.

Frequently Asked Questions

What is one mortgage discount point?

One point equals 1% of the loan amount paid upfront. It typically reduces your interest rate by 0.20–0.25%. On a $300,000 loan, one point costs $3,000 and might drop your rate from 6.75% to 6.50%.

How do I calculate break-even on mortgage points?

Divide the point cost by the monthly savings: $3,000 ÷ $45/month = 67 months. If you keep the loan longer than 67 months, the point saves money. Our Points Calculator handles this automatically.

Should I buy points on a refinance?

Only if your break-even is shorter than your expected time in the home. If you plan to sell or refinance again within 3–4 years, skip points — you will not recover the upfront cost.

Are mortgage points tax deductible on a refinance?

Points on a refinance must be amortized over the loan term — not deducted all at once. Each year you deduct a pro-rated portion. If you refinance again before the loan ends, you can deduct the remaining balance in that year. See IRS Publication 936.

What is the difference between discount points and origination points?

Discount points lower your rate — you choose to buy them. Origination points are a lender processing fee that does not reduce your rate. Your Loan Estimate separates them in Section A.

Mortgage Points Calculator: Should You Buy Points?

What Are Mortgage Discount Points?

How to Use the Mortgage Points Calculator

Inputs to Gather First

When Buying Points Makes Sense

You Plan to Stay Long-Term

Rates Are Unlikely to Drop Soon

You Have Cash Available

When to Skip Points

Points Break-Even Reference Table

Points vs. Larger Down Payment / Paying Down Principal

Frequently Asked Questions

Find Your Points Break-Even

Sources & References