Introduction
Medical bills pile up fast, but the IRS only lets you deduct a slice of them. Only the amount above 7.5% of your adjusted gross income (AGI) counts, and only when every rule below is met:
- You itemize on Schedule A
- The expense qualifies as medical care
- You paid it in the tax year you are filing
- Insurance or anyone else did not reimburse it
Here's the scale of the hurdle. IRS data on tax year 2022 returns shows only 9.5% of individual returns itemized, while 88.6% took the standard deduction.
This guide covers who can claim the deduction, what qualifies, what doesn't, and how to calculate and report it. Verify final 2027 line numbers, mileage rates, and thresholds in the official IRS instructions before filing.
Key Takeaways
- You generally need to itemize on Schedule A to deduct medical costs.
- Only expenses above 7.5% of AGI are deductible.
- Reimbursed costs, and costs paid from HSA or FSA funds, can't be counted again.
- Spouse and qualifying dependent expenses can be included if the rules are met.
Who Can Claim the Deduction and When?
Itemizing and whose expenses count
You must itemize instead of taking the standard deduction. Medical costs alone rarely justify that switch, so compare totals first.
You can include expenses for yourself, your spouse, and your dependents, based on status when the care was provided or paid. Key dependency rules from Publication 502:
- Qualifying relatives generally need to receive over half their support from you, though some income and joint-return tests are waived for medical purposes.
- Under a multiple-support agreement, only the person treated as providing over half the support can include their own payments.
- Divorced or separated parents may each include what they pay if custody and support conditions are met.
The payment-year rule
Count expenses in the year you pay them, not the year you're billed. Credit-card charges count when charged, not when you pay off the card. An unpaid bill doesn't count, and borrowed money counts in the year it pays the provider, not when you repay the loan.
If you're reimbursed later for an expense you deducted, the reimbursement is generally income up to the earlier deduction. If the AGI floor or non-itemizing meant you got no deduction, it isn't income.
Comparing against the 2027 standard deduction
Per Rev. Proc. 2026-35, the 2027 basic standard deductions are:
| Filing status | Amount |
|---|---|
| Single | $16,600 |
| Married filing separately | $16,600 |
| Married filing jointly | $33,200 |
| Qualifying surviving spouse | $33,200 |
| Head of household | $24,925 |
Taxpayers 65 or older, or blind, add $1,700 per condition ($2,100 if unmarried and not a surviving spouse). That addition enlarges the standard deduction only. It doesn't make medical expenses deductible.
The separate enhanced senior deduction of up to $6,000 per eligible person (2025-2028) works with either method, and phases out above MAGI of $75,000 ($150,000 jointly).
What Medical Expenses Qualify for Schedule A?
Publication 502 defines medical care as diagnosing, curing, treating, or preventing disease, or affecting a body structure or function. The primary purpose must be alleviating or preventing illness, not general health.
Common qualifying costs
- Physician and dental services, and hospital care when medical care is a principal reason for admission
- Prescribed medicines and insulin
- Diagnostic devices, needed equipment and supplies
- Therapy received as medical treatment
- Health and dental premiums you pay yourself (not employer-paid or pretax premiums)
Long-term care premiums
Qualified long-term care premiums count up to an age-based cap for 2027:
| Age at year-end | Maximum premium |
|---|---|
| 40 or younger | $500 |
| 41-50 | $945 |
| 51-60 | $1,890 |
| 61-70 | $5,030 |
| Over 70 | $6,290 |
The AGI floor still applies after the cap.
Travel and transportation
Ambulance, bus, taxi, train, and plane fares qualify. For a car, use actual gas and oil or the medical mileage rate, plus parking and tolls. The 2026 medical mileage rates are 20.5 cents per mile for January-June and 23.5 cents for July-December. No 2027 rate has been announced, so check the IRS mileage page before you file.
Lodging while away for care is capped at $50 per night per person, including a companion. It must be essential to care at a licensed hospital or similar facility, not lavish, and without a significant vacation element. A parent with a sick child can claim up to $100 per night combined.
Special situations
- Service animals: buying, training, and upkeep for an animal assisting a person with a visual, hearing, or other physical disability.
- Home modifications: ramps, wider doorways, grab bars, and handrails count at cost minus any increase in home value. If value doesn't rise, the full cost counts.
Check before claiming: compare each item with the final 2027 Publication 502 and keep records showing the medical purpose and amount paid.
Which Medical Expenses Are Limited, Excluded, or Already Reimbursed?
Reimbursements and the no-double-benefit rule
Reduce your expenses by insurance and other reimbursements, including insurer payments made directly to providers. Pretax premiums can't be deducted again.
Under Publication 969, you can't itemize expenses covered by tax-free HSA or Archer MSA distributions, health FSA reimbursements, or HRA distributions. Separate account-funded amounts from true out-of-pocket amounts.
Items that don't qualify, or only partly
| Item | Rule |
|---|---|
| General wellness, gym dues | Not deductible just because they're beneficial |
| Cosmetic procedures | Excluded unless correcting deformity from a congenital abnormality, accident, or disfiguring disease; teeth whitening is excluded |
| Nonprescription drugs | Excluded except insulin |
| Weight-loss programs | Only to treat a physician-diagnosed disease such as obesity or hypertension |
| Vitamins and supplements | Only when recommended to treat a specific diagnosed condition |
| Special diet food | Only the cost above a normal diet, with physician substantiation |
| Funeral costs, illegal treatments | Excluded |
| Lost wages | Foregone earnings aren't medical payments |
A health-related receipt isn't automatically deductible. Capital improvements and lodging are limited by the property-value and nightly-cap rules above.
How to Calculate and Report the Deduction on Schedule A
Step-by-step
- Total your eligible medical and dental expenses.
- Subtract reimbursements and excluded amounts.
- Multiply your AGI by 7.5% (0.075).
- Subtract that result from your net expenses; if it's negative, enter zero.
The Schedule A lines
The final 2025 form works like this (confirm 2027 line numbers when released):
- Line 1: eligible expenses after reimbursements
- Line 2: AGI
- Line 3: line 2 times 7.5%
- Line 4: line 1 minus line 3, not below zero
- Line 17: total itemized deductions, which carries to Form 1040 (line 12e on the 2025 form)
The deduction lowers taxable income. It doesn't refund your medical bills.
Optional whole-dollar rounding must be used consistently: drop under 50 cents, round 50 cents and up. Add amounts with cents first, then round the line total.
Hypothetical example
These figures are for illustration only. Assume AGI of $80,000 and net eligible expenses of $9,000.
- Floor: $80,000 x 0.075 = $6,000
- Deductible: $9,000 - $6,000 = $3,000
- Excluded by the floor: $6,000
Add that $3,000 to your other itemized deductions, then compare the total with your standard deduction, including any age addition.
Verification checklist
Before filing, confirm these sources for the tax year:
- Final 2027 Schedule A and instructions
- Publication 502
- Publication 969
- Any IRS notices for the year
Records, Common Errors, and When to Seek Help
Records to keep
- Provider invoices and receipts
- Cancelled checks or payment confirmations
- Insurance statements and HSA/FSA records
- Prescriptions and evidence of medical necessity
- Mileage and travel logs
- Dependency documentation
Don't send these with a paper return. Keep them for 3 years from filing, and longer in special cases. Proof of payment alone doesn't prove deductibility.
In a case highlighted by the Taxpayer Advocate Service (Sutherland v. Commissioner), taxpayers had mileage totals but no logs showing trip origins or vehicles used. The Tax Court disallowed the deduction.
Common mistakes
- Deducting billed-but-unpaid costs
- Including reimbursed or pretax-paid expenses
- Double-counting HSA or FSA payments
- Claiming the full cost of a partly medical item
- Deducting all expenses rather than just the excess over the floor
- Claiming medical costs while taking the standard deduction
When to get help
A professional review is worth it when your return involves:
- Dependents or long-term care
- Reimbursements across tax years
- International income or multiple forms
- A close itemizing decision
VJM Global's CPAs and U.S.-compliant professionals support US individual return preparation (Form 1040 and 1040-NR) and tax compliance. Outcomes depend on your facts.
Frequently Asked Questions
Do I need to itemize to deduct medical expenses on Form 1040 Schedule A?
Yes. Medical expenses are deductible only through itemizing on Schedule A. Compare your itemized total with the 2027 standard deduction before deciding.
How do I report medical expenses on Form 1040 Schedule A?
Enter net eligible expenses and your AGI, apply the 7.5% floor, and carry the excess into total itemized deductions. Confirm the final 2027 line numbers first.
What medical expenses qualify for Schedule A (Form 1040)?
Costs to diagnose, treat, or prevent illness: doctor and dental care, prescriptions, insulin, qualifying premiums, and eligible medical travel. Publication 502 has the full rules.
Which medical expenses are not tax deductible on Schedule A?
Reimbursed costs, HSA/FSA-funded costs, general wellness and personal expenses, and unsupported cosmetic procedures. So are nonprescription drugs (except insulin), funerals, and unpaid bills.
What is the standard deduction for seniors and how does it affect medical expense deductions on Schedule A?
Taxpayers 65 or older get an extra $1,700 ($2,100 if unmarried) for 2027. Medical expenses still require itemizing, so compare both methods.
