Buying Mortgage Points Analysis
Analyze whether buying mortgage discount points is worth it. Compare upfront point costs vs monthly savings, calculate breakeven timelines, and determine the optimal number of points for your situation.
Interactive Comparison
Adjust parameters below to see how changes affect each scenario. The best value in each category is highlighted in green.
| Scenario | Type | Home Price | Down % | Rate | Term | Monthly | Total Interest | Total Cost | Payoff | Actions |
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Mortgage Points Analysis Handbook
Determining whether buying down your interest rate makes financial sense
What this engine does
This comparison tool models a mortgage with and without discount points purchased at closing. Points (each costing 1% of the loan amount) permanently reduce the note rate by approximately 0.25% per point. The analysis shows the upfront cost of points, the resulting monthly payment reduction, and the breakeven timeline — the number of months required for the cumulative monthly savings to exceed the initial point cost.
When to deploy this tool
Use this analysis when a lender offers you the option to buy discount points and you are deciding whether to pay upfront for a lower rate. Points are most valuable if you plan to stay in the home beyond the breakeven point (typically 3-7 years). They are less attractive if you expect to sell or refinance before reaching breakeven, or if the upfront cash could earn a higher return elsewhere.
How Calculations Work
Two scenarios are modeled on a $320,000 loan amount. The no-points scenario carries the prevailing interest rate (6.75%). The 2-points scenario has the borrower pay 2% of the loan amount ($6,400) at closing in exchange for a reduced rate (6.00%). The lower rate reduces the monthly P&I payment. The difference in monthly payments is divided into the point cost to determine the breakeven month. Total lifetime interest savings are also calculated for comparison.
Common Strategic Pitfalls
The most common mistake is buying points with money that could serve as a larger down payment instead. A larger down payment reduces the loan balance permanently, while points only reduce the rate. Another error is buying points when planning to sell before the breakeven date — the savings never recoup the upfront cost. Finally, failing to shop multiple lenders is a mistake, as some lenders offer lower par rates (no-points rates) without requiring points to get competitive pricing.
Sources & Assumptions
Calculations are based on industry-standard financial models. To review the mathematical formulas and verification reports in detail, visit our dedicated Financial Methodology page.
Pre-populated data reflects estimated national averages sourced from county tax agencies and regional insurance reports. Homeowners can customize these percentages inside advanced settings cards.
PMI is modeled at 0.75% of the initial loan principal annually for LTV ratios exceeding 80%, automatically terminating in calculations when the outstanding loan balance drops to or below 80% of the initial purchase price.
Frequently Asked Questions
Are mortgage points tax deductible?
Yes, mortgage points are generally tax deductible as prepaid interest. On a purchase mortgage, points are typically deducted in full in the year of purchase. On a refinance, points must be amortized and deducted over the life of the loan. Consult a tax professional for your specific situation.
How many points can I buy on a mortgage?
Most lenders allow you to buy up to 3-4 discount points. Each point typically reduces the rate by 0.25%, so 4 points could lower your rate by approximately 1.00%. However, there are regulatory limits on how much in points and fees can be charged on certain loan types.
What is the breakeven period for mortgage points?
The breakeven period is typically 3 to 7 years, calculated by dividing the total cost of points by the monthly payment savings. If you plan to stay in the home beyond the breakeven point, buying points saves you money. If you expect to move sooner, points may not be worth the upfront cost.
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Financial Disclaimer
This calculator is intended for planning and educational purposes only. It relies on assumptions and information provided by you regarding your goals, expectations, and financial situation. Results should not be used as your sole source of information. Outputs are estimates only and do not constitute a loan offer, financial advice, legal advice, tax advice, or solicitation. Consult qualified professionals before making financial decisions.