Homebuyers who paid mortgage discount points at closing during the 2025 tax year face a narrow window to claim a federal deduction that can cut their tax bill by hundreds or even thousands of dollars. The deduction hinges on whether the buyer itemizes, whether the loan finances a principal residence, and whether the points meet conditions spelled out in the Internal Revenue Code. Getting any of those details wrong, especially for closings late in the calendar year, can trigger errors that delay refunds or invite IRS scrutiny.
Why December Closings Create Points Deduction Problems
The tax code treats mortgage points as prepaid interest. Under the general rule, cash-method taxpayers must spread that cost over the life of the loan. But Section 461(g) carves out an exception: points paid on debt used to purchase or improve a principal residence, and secured by that residence, can be deducted in full in the year they are paid, provided several conditions are met.
The friction appears at year-end. Lenders report points in Box 6 of Form 1098, and that form covers the calendar year of closing regardless of the borrower’s accounting method, according to the Form 1098 instructions. A buyer who closes on December 30 receives a Form 1098 that may not arrive until late January or February. If the buyer files quickly, or if a state return deadline falls before the federal form arrives, the risk of misreporting rises. Some filers claim the full amount without confirming it matches Box 6; others miss the deduction entirely because they assume the points will appear on a future year’s form.
The IRS allows points not shown on Form 1098 to be entered on Schedule A, line 8c, as long as the filer can substantiate what was paid at closing. That flexibility helps, but it also means taxpayers must track what the lender reported and what they paid out of pocket, then reconcile the two. A Government Accountability Office report on the home mortgage interest deduction found that the layered conditions governing points create frequent taxpayer errors, a problem the GAO attributed partly to the complexity of the rules themselves.
Statutory Rules and IRS Guidance That Control the Deduction
Three layers of authority determine whether a points deduction holds up. First, the statute: IRC Section 461(g)(2) governs the deductibility of points on a principal residence, and it generally requires that prepaid interest be amortized unless it qualifies for the home purchase exception. Second, IRS guidance in Publication 936 and related materials lists the specific conditions that must be met for a full current-year deduction, including that the loan must be secured by the filer’s main home, that paying points is an established business practice in the area, and that the amount paid does not exceed what is generally charged.
Third, topic-level summaries such as IRS Topic 504 reinforce that deductible points must be computed as a percentage of the principal amount, clearly labeled as points on the settlement statement, and paid from the taxpayer’s own funds at or before closing. If the points are financed into the loan balance, or if the funds effectively come from the lender or seller without a corresponding cash outlay, the deduction may need to be spread over the life of the mortgage instead of taken all at once.
When any of these conditions fail, the rules revert to the general treatment of prepaid interest. In that case, the taxpayer typically deducts a portion of the points each year over the term of the loan. For a 30-year mortgage, that means only a small fraction of the upfront cost is deductible in the first year, even if the closing occurred in December. Taxpayers who assume all points are immediately deductible can therefore overstate their itemized deductions and face adjustments if the return is examined.
Practical Steps for Late-Year Homebuyers
Homebuyers who closed late in 2025 should start with their closing disclosure and settlement statement, confirming the exact amount labeled as discount points or loan origination points. That figure should then be compared to Box 6 of Form 1098 once it arrives. Any discrepancy needs to be reconciled, with documentation kept in case the IRS requests support for the claimed deduction.
Next, filers should determine whether they will itemize. Since points are claimed as part of the mortgage interest deduction on Schedule A, taxpayers who use the standard deduction gain no benefit from the points deduction in that year. In some cases, bunching other deductible expenses, such as charitable contributions or state and local taxes (subject to applicable limits), can push total itemized deductions high enough to justify itemizing and unlock the value of the points deduction.
Finally, timing matters. Filing before receiving Form 1098 increases the chance of errors, amended returns, and processing delays. For December closings in particular, waiting for lender reporting, then carefully applying the statutory and administrative rules, can mean the difference between a clean deduction and an avoidable IRS notice. With a short filing window for the 2025 tax year, homeowners who paid points at closing should review their paperwork now, verify that their loan and payment structure meet the home purchase exception, and be prepared to document how they arrived at the amount they claim.
Warren Cohen is a finance writer based in Phoenix, Arizona, covering personal finance topics including credit, banking, and beginner investing. He earned his degree in business administration from Arizona State University and began his career working in consumer finance, where he gained direct experience with lending and credit systems. He now writes for personal finance websites and fintech platforms, focusing on clear, practical content that helps readers make informed financial decisions.
