How to Fill Out Schedule A to Report Medical Expenses (Form 1040)

To fill out Schedule A to report medical expenses on Form 1040, add up your unreimbursed qualifying medical and dental costs for the year, enter that total on line 1, put your adjusted gross income on line 2, multiply line 2 by 7.5 percent for line 3, and subtract line 3 from line 1 on line 4. Whatever remains on line 4 is your deductible medical expense, and it flows into the rest of your itemized deductions. If line 3 is larger than line 1, you get nothing from this section, and the time you spent gathering receipts was a check on the math rather than a deduction.

Decide Whether Itemizing Beats the Standard Deduction

Schedule A only helps if your total itemized deductions come out higher than the standard deduction for your filing status. For the 2026 tax year, the standard deduction is $16,100 for single filers, $32,200 for married couples filing jointly, and $24,150 for heads of household.1Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 Your medical deduction is only the piece of your out-of-pocket costs that exceeds 7.5 percent of your adjusted gross income.2Office of the Law Revision Counsel. 26 USC 213 – Medical, Dental, Etc., Expenses On a $60,000 AGI, the first $4,500 of medical expenses does nothing for you, and $6,000 in bills produces a $1,500 deduction, not $6,000.

Do a rough calculation before you start. Multiply your AGI by 0.075. If your unreimbursed medical costs don’t clearly exceed that number, and your other itemizable items (state and local taxes, mortgage interest, charitable contributions) aren’t already close to the standard deduction on their own, the standard deduction is the better move.

What Goes Into Your Line 1 Total

The IRS defines deductible medical care as amounts paid to diagnose, treat, mitigate, or prevent disease, and for care that affects any structure or function of the body.2Office of the Law Revision Counsel. 26 USC 213 – Medical, Dental, Etc., Expenses Costs that qualify include:3Internal Revenue Service. Publication 502 – Medical and Dental Expenses

  • Fees from physicians, surgeons, dentists, chiropractors, psychologists, and other licensed practitioners.
  • Prescription drugs, including insulin.
  • Dental and vision care such as fillings, crowns, braces, eyeglasses, contact lenses, and laser eye surgery.
  • Therapy, psychiatric care, and inpatient substance abuse treatment.
  • Nursing home costs, qualified long-term care services, and premiums on qualifying long-term care insurance.
  • Wheelchairs, hearing aids, prosthetics, bandages, and breast pumps.
  • Travel to and from medical appointments, either at actual cost or at the IRS standard rate of 20.5 cents per mile for 2026, plus parking and tolls. You can use the standard rate or actual expenses, not both.4Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents Per Mile, Up 2.5 Cents
  • Health insurance premiums paid with after-tax dollars, including Medicare Part B and Part D.
  • Home modifications made primarily for medical reasons, such as ramps and widened doorways.

What to Leave Out

Cosmetic procedures unrelated to a deformity from disease, injury, or a congenital condition do not qualify. Gym memberships, general supplements, and teeth whitening are out. Over-the-counter medicines count only when a physician has prescribed them.3Internal Revenue Service. Publication 502 – Medical and Dental Expenses

Expenses paid through a Health Savings Account, Flexible Spending Account, Archer MSA, or Health Reimbursement Arrangement cannot go on Schedule A. Those accounts already gave you the tax benefit, and claiming the deduction on top would be a prohibited double benefit.5Internal Revenue Service. Frequently Asked Questions About Medical Expenses Related to Nutrition, Wellness, and General Health

Only the unreimbursed portion counts. Subtract anything insurance paid, any HSA or FSA distributions, and any other reimbursement before an expense goes into your total.2Office of the Law Revision Counsel. 26 USC 213 – Medical, Dental, Etc., Expenses An $8,000 hospital bill with $6,500 covered by insurance goes in as $1,500.

The Four Lines on Schedule A

Medical and dental expenses occupy the first section of Schedule A (Form 1040):6Internal Revenue Service. 2025 Instructions for Schedule A (Form 1040)

  • Line 1. Enter your total qualifying medical and dental expenses, net of insurance and other reimbursements. This is the figure you built from your receipts, EOBs, pharmacy summaries, mileage log, and premium records.
  • Line 2. Enter your AGI from Form 1040, line 11b.
  • Line 3. Multiply line 2 by 0.075.
  • Line 4. Subtract line 3 from line 1. Zero or a negative number means no medical deduction. A positive number is your deductible amount, and it feeds into the total on Schedule A that eventually replaces the standard deduction on your Form 1040.

Tax preparation software runs the arithmetic once you enter the individual expenses. Doing the calculation yourself first tells you whether the effort of itemizing is worth it.

Receipts and bills do not get attached to your return. Keep them yourself.

Records to Keep After Filing

Hold onto your supporting documents for at least three years after filing. If the IRS asks questions later, this is what backs up line 1:

  • Itemized bills and receipts from providers showing date of service, description of care, amount billed, insurance adjustment, and your out-of-pocket payment.
  • Explanation of Benefits statements from your insurer, which show what insurance covered and what you owed.
  • Pharmacy printouts or an annual summary showing drug name, date filled, and the amount you paid after insurance.
  • Pay stubs or insurer statements documenting after-tax premium payments.
  • A mileage log with date, destination, purpose, and miles for each medical trip if you’re claiming travel.
  • Canceled checks, credit card statements, or bank records showing payment cleared. The IRS treats the payment date as the date you mailed or delivered a check, the date shown on your bank’s online payment record, or the date a credit card charge was made.7Internal Revenue Service. Publication 502 – Medical and Dental Expenses

When and How to File

Schedule A goes in with your Form 1040. For the 2026 tax year, the filing deadline is April 15, 2026. Filing Form 4868 gets you an automatic six-month extension to October 15, but the extension covers filing, not payment. Any tax owed is still due April 15, and interest and penalties run on unpaid balances from that date forward.8Internal Revenue Service. Need More Time to File? Don’t Wait, Request an Extension

Electronic filing through IRS e-file or approved tax software processes fastest and gives you an acknowledgment that the return arrived. If you file on paper, use the service center address for your state listed in the Form 1040 instructions and send it with tracking.

If the IRS Questions Your Deduction

The IRS may examine a medical expense deduction, especially if the amount is large relative to your income. You’ll be asked to produce the bills, EOBs, mileage logs, and payment records described above.

If the IRS proposes to disallow some or all of it, you’ll get a letter with the proposed changes and your appeal rights. You generally have 30 days from the date of that letter to respond.9Internal Revenue Service. Preparing a Request for Appeals For disputes of $25,000 or less in additional tax per period, you can use the streamlined route by filing Form 12203, Request for Appeals Review, or writing a short statement identifying what you disagree with and why. Larger disputes need a formal written protest sent to the address in the IRS letter. You can represent yourself or authorize an attorney, CPA, or enrolled agent to handle the appeal using Form 2848, Power of Attorney.