Taxpayers who spent heavily on medical care during 2025 face a narrow but real opening to cut their federal tax bill, provided their unreimbursed costs clear a specific threshold tied to income. Under federal law, only the portion of qualifying medical and dental expenses that exceeds 7.5% of adjusted gross income can be subtracted, and only for filers who itemize deductions on Schedule A rather than claiming the standard deduction. For households dealing with ongoing health conditions, that 7.5% floor can be easier to reach than many assume.
How the 7.5% AGI floor shapes who benefits
The rule traces directly to Section 213 of the Internal Revenue Code, which permits a deduction for unreimbursed medical expenses only to the extent they exceed 7.5% of a filer’s adjusted gross income. A household earning $80,000, for example, would need more than $6,000 in qualifying out-of-pocket costs before a single dollar becomes deductible. That math alone screens out most taxpayers with routine annual checkups or minor procedures.
The dynamic shifts for people managing chronic conditions. Recurring costs for insulin, dialysis, physical therapy, or home health aides accumulate month after month. Those expenses stack predictably, making it far more likely that a household crosses the 7.5% line year after year. A one-time surgery or emergency room visit, by contrast, may spike costs in a single tax year but rarely repeats. The structural difference means chronic-care households are better positioned to generate consistent itemized medical deductions, even at the same income level as someone with a single acute event.
Income also matters in less obvious ways. Two families with identical medical bills may see very different tax outcomes if one has a significantly higher AGI. Because the 7.5% floor rises with income, a six-figure household must clear a much higher dollar threshold before deductions start. Lower- and moderate-income filers, especially retirees living on fixed pensions and Social Security, may find that relatively modest out-of-pocket expenses surpass the floor and generate at least some deduction.
What the IRS counts as a qualifying expense for 2025
Publication 502 for the 2025 tax year spells out what qualifies. Hospital stays, prescription drugs, dental work, vision care, mental health treatment, and transportation to medical appointments all count, as do premiums for long-term care insurance within certain limits. The IRS also published inflation-adjusted caps by age band for qualified long-term care premiums under Section 213(d)(10) in Internal Revenue Bulletin 2024-45, which applies to taxable years beginning in 2025. Those caps determine the maximum amount of long-term care insurance premiums that can be treated as deductible medical care.
Reimbursements from insurance reduce the eligible total. Only the net amount a taxpayer actually paid out of pocket enters the calculation. Expenses covered by a health savings account or flexible spending arrangement are also excluded. The computation itself appears on Schedule A, where filers enter total qualifying expenses, subtract 7.5% of their AGI, and deduct whatever remains.
For many households, the main practical challenge is recordkeeping. Receipts for copays, pharmacy purchases, dental visits, and mileage to medical appointments need to be tracked throughout the year. The IRS explains in its brief tax topic on medical and dental expenses that filers should be prepared to substantiate both the amount and the medical nature of claimed costs if asked.
Gaps in the data and open questions for filers
No recent IRS Statistics of Income release breaks down exactly how many taxpayers claimed the medical expense deduction for the most recent completed filing year. Without that data, it is difficult to measure how many households actually benefit or whether the share of claimants is growing as health care costs rise. The absence of granular administrative figures also means there is no public benchmark for how often the IRS flags medical deduction claims during audits or what documentation errors trigger the most disputes.
The practical uncertainty leaves filers to navigate a gray area. Taxpayers must decide whether to invest time in tracking expenses and itemizing without clear odds of a payoff. They also have to interpret sometimes nuanced rules, such as which home modifications qualify as medical improvements and how to allocate costs when an expenditure provides both medical and general household benefits. Publication 502 offers examples, but edge cases remain, particularly for newer forms of care and technology.
For now, the medical expense deduction remains a niche but important tool. It rarely helps people with sporadic, low-level spending, yet it can matter significantly to those facing chronic illness, disability, or long-term care needs. As medical costs continue to climb and the population ages, the 7.5% threshold will likely remain a focal point in debates over how much relief the tax code should offer to households bearing the heaviest health burdens.
