The Medical Expense Deduction: The 7.5% AGI Threshold Explained

The medical expense deduction is one of the itemized deductions most people technically qualify for at some point in their lives but rarely benefit from, because of a floor that eliminates most ordinary-year medical spending before any deduction even begins.

The 7.5% of AGI Floor

You can only deduct unreimbursed medical expenses that exceed 7.5% of your Adjusted Gross Income — and only the amount above that floor, not your total medical spending. If your AGI is $80,000, the first $6,000 of medical expenses (7.5% of $80,000) isn't deductible at all; only spending beyond that $6,000 floor counts toward your itemized deduction.

This deduction is also only available if you itemize rather than taking the standard deduction — and given how high the standard deduction is for most filers, even a meaningful medical expense deduction often isn't enough on its own to make itemizing worthwhile unless combined with other itemized deductions.

What Qualifies

A broad range of unreimbursed costs for the diagnosis, cure, mitigation, treatment, or prevention of disease qualify, including: doctor, dentist, and vision care costs; prescription medications; hospital and long-term care facility costs; certain home modifications made for medical reasons (a wheelchair ramp, for example — though only the cost exceeding any resulting increase in your home's value); mileage driven for medical care (at a specific per-mile rate set annually); and premiums for medical insurance you pay yourself (if not already deducted elsewhere, such as through the self-employed health insurance deduction or pre-tax payroll deductions).

What Doesn't Qualify

Purely cosmetic procedures (unless necessary to correct a deformity from an accident, congenital condition, or disfiguring disease), general health items like vitamins or a gym membership taken for general wellness rather than a specific diagnosed condition, and over-the-counter medications without a prescription generally don't qualify. Funeral and burial expenses, though sometimes assumed to be medical-adjacent, are also explicitly excluded.

Reimbursed Amounts Don't Count

Only expenses you actually paid out of pocket and were never reimbursed for count toward this deduction — amounts covered by insurance, or paid with pre-tax money from an HSA or FSA, don't qualify, since you've already received a tax benefit (or avoided the cost entirely) through those other mechanisms. Claiming the same dollar of medical expense as both an HSA-funded payment and an itemized deduction would be double-dipping the tax benefit.

Why "Bunching" Helps

Because of the 7.5% floor, a strategy some people use is deliberately timing elective, non-urgent medical or dental procedures to concentrate them into a single calendar year rather than spreading them evenly across two years — clearing the floor in one "bunched" year (potentially making itemizing worthwhile that year) rather than having modest, floor-clearing-insufficient expenses in both years separately.

Medical Expenses for a Parent or Other Relative

You can include medical expenses you paid for someone who qualifies as your dependent even if you can't claim them as a dependent solely because of the gross income test — a common scenario for adult children helping cover a parent's medical costs. The support and relationship tests still need to be met, but the specific gross-income limitation that might otherwise disqualify claiming that parent as a dependent doesn't block including their medical expenses in your own deduction calculation.

A Worked Example

A taxpayer with $70,000 AGI has $9,000 in unreimbursed medical expenses for the year — dental work, prescription costs, and a portion of health insurance premiums paid out of pocket. The 7.5% floor is $5,250; only the $3,750 above that floor is potentially deductible, and only if they itemize rather than taking the standard deduction, and only if their total itemized deductions (including this medical amount) exceed what the standard deduction would provide.

Common Questions

Can I deduct medical expenses for a dependent? Yes — medical expenses you pay for a spouse or a dependent (as defined for tax purposes) count toward your own deduction, combined with your own medical costs against the same 7.5% floor.

Does long-term care insurance count the same as regular medical insurance? Qualified long-term care insurance premiums are deductible here too, subject to age-based dollar limits rather than being unlimited the way most medical insurance premiums are.

What if my medical expenses were paid with a personal loan or credit card? The expense is generally deductible in the year you actually incurred and paid it (charged the card or received loan proceeds used for the medical cost), not spread out over however long you take to pay off the loan or card balance.