What a medical expense deduction is

A medical expense deduction is a way to reduce your taxable income by subtracting certain healthcare costs you paid out of your own pocket during the year. The IRS allows you to deduct medical and dental expenses that exceed a threshold — currently 7.5% of your adjusted gross income (AGI). This means you only deduct the amount above that percentage.

For example, if your AGI is $50,000, the threshold is $3,750. If you spent $6,000 on medical costs, you can deduct $2,250 ($6,000 minus $3,750). You subtract this from your income before calculating what you owe in taxes, which lowers your tax bill.

To use this deduction, you must itemize deductions on your tax return instead of taking the standard deduction. Most people take the standard deduction because it is simpler and often larger, so medical deductions only help if your total itemized deductions exceed the standard deduction for your filing status.

Key Takeaways

  • You can only deduct medical expenses that exceed 7.5% of your adjusted gross income, and only if you itemize deductions instead of taking the standard deduction.
  • Covered expenses include doctor visits, hospital stays, prescription medications, dental work, vision care, and certain medical equipment and supplies.
  • You cannot deduct cosmetic procedures, general health expenses like gym memberships, or over-the-counter medications without a prescription.
  • You must keep receipts, invoices, and proof of payment for all medical expenses you claim, and the IRS may ask to see them.
  • Medical expense deductions are most useful if you had a major health event, surgery, or ongoing treatment that year, or if you have other large itemized deductions.

What medical expenses you can deduct

The IRS has a specific list of medical expenses that count. These include doctor and dentist visits, hospital stays and surgery, prescription medications, vision care (glasses, contacts, eye exams), hearing aids and batteries, medical equipment (crutches, wheelchairs, blood pressure monitors), and transportation to medical appointments (mileage or actual costs).

You can also deduct premiums you pay for health insurance, including Medicare premiums, long-term care insurance premiums, and health insurance you buy on your own. If you are self-employed, you may deduct health insurance premiums separately, which is often a better option than itemizing.

Mental health treatment, including therapy and psychiatric care, counts as a deductible medical expense. So do certain medical procedures like fertility treatments, weight-loss surgery (if medically necessary), and dental implants or orthodontia.

What you cannot deduct

Cosmetic procedures do not count — this includes facelifts, teeth whitening, and hair removal unless they are part of reconstructive surgery after an injury or illness. Over-the-counter medications like cold medicine or pain relievers do not count unless you have a prescription for them. Vitamins and supplements generally do not count, even if recommended by a doctor.

General health and wellness expenses are not deductible. This means gym memberships, fitness classes, and general wellness programs do not may have access to, even if your doctor recommends exercise. Toothpaste, mouthwash, and other hygiene products do not count. Travel for general health reasons — like going to a warmer climate for your health — is not deductible.

If you pay for a procedure that is not medically necessary, it does not count. The key word is medical: the expense must treat, prevent, or diagnose a disease or condition.

How to track and document medical expenses

Keep every receipt, invoice, and statement from doctors, dentists, hospitals, pharmacies, and medical suppliers. The IRS does not require you to attach receipts to your tax return, but you must have them if the IRS asks. A simple spreadsheet or folder with dates, provider names, and amounts is enough to organize them.

If you paid by credit card or check, your bank or credit card statement can serve as backup proof. For mileage to medical appointments, keep a log with dates, destinations, and miles driven — the standard mileage rate for medical travel changes each year, so check the IRS website for the current rate.

If you paid for someone else's medical expenses — a spouse, child, or dependent parent — you can include those costs if they meet the IRS definition of a dependent. Keep records showing the relationship and that you paid the bill.

When itemizing makes sense for medical expenses

Itemizing is only worth it if your total itemized deductions (medical plus mortgage interest, property taxes, charitable donations, and other allowed deductions) exceed the standard deduction. For 2024, the standard deduction is $14,600 for single filers and $29,200 for married filing jointly. These amounts change each year.

Medical deductions are most useful in years when you had major health events — surgery, hospitalization, new chronic condition diagnosis, or expensive dental work. If you had a quiet health year, your medical expenses probably will not reach the 7.5% threshold, and itemizing will not help.

Some people benefit from "bunching" deductions in one year. If you know you will have a large medical expense, you might delay other deductible expenses (like charitable donations) until that same year to push your total itemized deductions over the standard deduction threshold.

Self-employed and business owner considerations

If you are self-employed, you can deduct health insurance premiums you pay for yourself and your family as a business expense, separate from itemizing. This is often better than waiting to itemize because it reduces your self-employment income directly. You take this deduction on Schedule C (for sole proprietors) or your business tax form.

Health Savings Account (HSA) contributions are also deductible if you have a high-deductible health plan. Money you put into an HSA reduces your taxable income and can be used tax-free for medical expenses. This is separate from the medical expense deduction and often more valuable.

Frequently Asked Questions

Can I deduct medical expenses for my adult child?

Only if your adult child is your dependent for tax purposes. You must provide more than half their financial support for the year, and they must meet income limits set by the IRS. If they are independent, they cannot claim their own medical expenses on your return — they would need to itemize on their own return.

What if I paid medical bills in one year but the service was in another year?

You deduct the expense in the year you paid it, not the year you received the service. If you paid a hospital bill in January 2024 for surgery in December 2023, the deduction goes on your 2024 return.

Does insurance reimbursement affect my deduction?

Yes. You can only deduct the amount you actually paid out of pocket. If insurance reimbursed you $500 of a $1,000 bill, you deduct only the $500 you paid. If you are reimbursed after you file your return, you may need to file an amended return.

Can I deduct the cost of a medical procedure my insurance denied?

Yes, if the procedure is medically necessary and performed by a licensed provider. Insurance denial does not change whether the IRS considers it a valid medical expense. Keep documentation showing it was medically necessary.

Is there a limit to how much I can deduct?

There is no upper limit on the total amount you can deduct, but you must still exceed the 7.5% threshold of your AGI. The higher your income, the higher the threshold you must clear. Very high earners may find it difficult to reach the threshold in years without major medical events.