Understanding the Basics of Medical Expense Deductions

When you file your federal income tax return, you have the option to either take the standard deduction or itemize your deductions. For many people, medical expenses become relevant only if they plan to itemize. The Internal Revenue Service (IRS) allows taxpayers to deduct certain medical and dental expenses, but there are specific rules about which costs qualify and how much of the total you can actually deduct.

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The foundational rule is this: you can only deduct medical expenses that exceed 7.5% of your adjusted gross income (AGI). This threshold means that for most households, only the medical costs beyond that percentage mark become deductible. For example, if your AGI is $60,000, the first $4,500 in medical expenses (7.5% of $60,000) cannot be deducted. Only expenses above that $4,500 amount count toward your deduction.

This threshold creates what tax professionals call the "floor" for medical deductions. It's why people with significant medical expenses in a single year—such as those who had major surgery, ongoing treatment for a serious illness, or unexpected health emergencies—are more likely to benefit from itemizing. Someone with $15,000 in medical expenses when their AGI is $60,000 could deduct $10,500 of those costs ($15,000 minus the $4,500 threshold).

The distinction between what is and isn't deductible can be surprisingly detailed. The IRS maintains specific guidance on hundreds of medical situations. Understanding these basics helps you organize your receipts and records throughout the year, making tax preparation far less stressful when you work with a tax professional.

Practical Takeaway: Calculate your AGI and multiply it by 7.5% to determine your personal threshold. Gather receipts for all medical expenses throughout the year—you'll need documentation regardless of whether you ultimately itemize, and having organized records makes working with a tax professional much more efficient.

Medical Services and Procedures That Qualify for Deduction

The broadest category of deductible medical expenses includes services performed by licensed medical professionals. This covers doctor visits, whether with your primary care physician, specialists, or surgeons. Hospital stays, including both emergency room visits and planned admissions, are deductible. Surgical procedures, whether minor or major, count as medical expenses you can potentially deduct.

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Dental care represents another substantial area of deductible medical expenses. Cleanings, fillings, root canals, extractions, and orthodontia (braces) all qualify. If you had major dental work done—such as dental implants, bridges, or crown replacements—these can represent significant deductible expenses. However, purely cosmetic dental work, such as teeth whitening done solely for appearance rather than dental health, does not qualify.

Mental health and psychiatric treatment is fully deductible. Sessions with psychiatrists, psychologists, and licensed therapists count as medical expenses. This applies whether treatment occurs in a clinic, hospital, or private practice setting. If you took medication prescribed for mental health conditions, the cost of that medication is also deductible (we'll explore prescription drug costs in more detail in a later section).

Vision care expenses include eye exams, prescription glasses, and contact lenses. The cost of the eye examination itself, the frames, and the lenses are all deductible medical expenses. However, cosmetic procedures like LASIK surgery may be deductible—the IRS allows deduction of vision correction procedures, though some older guidance suggested otherwise. This is an area where consulting a tax professional proves valuable, as the rules have evolved.

Hearing aids and related hearing services also qualify. The cost of the hearing aid itself, the fitting, adjustments, and batteries are deductible medical expenses. This category also includes services from an audiologist.

Practical Takeaway: Keep receipts from all medical provider visits, dental appointments, and vision care visits separate from other expenses. Note what type of service each receipt represents (procedure, consultation, etc.), as this helps when organizing for tax purposes.

Medications, Prescriptions, and Pharmaceutical Costs

Prescription medications prescribed by a licensed medical professional are deductible medical expenses. This includes medications for chronic conditions, acute illnesses, and mental health treatment. The deduction applies to the actual cost of the medication, not necessarily what your insurance covers or what you pay out-of-pocket after insurance. If you pay $200 for a medication but insurance covers $150, leaving you to pay $50, the full $200 is the medical expense for deduction purposes.

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Over-the-counter medications present a more limited picture. Prior to 2020, over-the-counter drugs were generally not deductible. However, the CARES Act modified this rule: over-the-counter medications and biological products can now be deductible medical expenses without requiring a prescription. This means common items like pain relievers, allergy medications, cold medicines, and antacids may be deductible—a significant change from earlier rules.

The key requirement for over-the-counter products is that they treat a diagnosed medical condition. You cannot deduct vitamins, supplements, or general wellness products that aren't treating a specific diagnosed condition. For instance, a multivitamin taken for general health maintenance isn't deductible. However, if you have a specific medical condition and take a particular supplement on your doctor's orders to treat that condition, that's a different situation and may be deductible.

Insulin deserves specific mention because it represents a particularly significant pharmaceutical expense for many people. All insulin costs are deductible medical expenses, whether you use traditional insulin, newer formulations, or insulin delivery devices like pens or pumps. The actual insulin medication, the needles and lancets used with insulin, and glucose monitoring supplies all count.

Medical marijuana presents a complex situation. While cannabis remains controlled at the federal level, some states allow its medical use. The IRS has indicated that medical marijuana would theoretically be deductible in states where it's legal and prescribed by a physician, but you should explore this with a tax professional in your state, as the situation remains evolving and state-specific.

Practical Takeaway: Maintain a running list throughout the year of all prescription purchases, including the date and amount paid. If you use over-the-counter medications regularly for a diagnosed condition, keep receipts for those as well. Note the condition being treated for each medication—this documentation helps justify the deduction if ever questioned.

Medical Equipment, Supplies, and Home Modifications

Medical equipment purchased for treating a specific diagnosed medical condition can be deductible. Crutches, wheelchairs, walkers, and canes are all deductible if purchased for medical reasons. Continuous positive airway pressure (CPAP) machines used to treat sleep apnea, along with their supplies and maintenance, are deductible. Oxygen equipment and supplies, blood pressure monitors, and glucose meters all qualify as deductible medical expenses.

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Diabetic supplies represent a significant category of deductible equipment and supplies. Test strips, lancets, syringes, and glucose monitors can add up to substantial annual expenses. All of these are deductible. If you use an insulin pump or continuous glucose monitor, those devices and their supplies are also deductible expenses.

Home modifications made primarily to accommodate a medical condition may be deductible, but with important limitations. If you install grab bars, ramps, or stair lifts in your home because you have mobility issues, the portion of the cost that exceeds any increase in your home's value is potentially deductible. If you widen doorways to accommodate a wheelchair, that cost may be deductible to the extent it doesn't increase your home's value. This is a nuanced area where professional guidance helps, as the deduction calculation can be complex.

Mobility vans present another example of equipment where cost may be deductible. If you purchase a van and have it modified with wheelchair lifts or other equipment for a person with a disability, the cost of the modifications (but typically not the cost of the vehicle itself) may be deductible.

Medical supplies like bandages, wraps, braces, and compression stockings purchased on a doctor's recommendation for treating a specific condition are deductible. However, similar items purchased for general wellness or minor issues without a specific medical diagnosis generally don't qualify. Elastic bandages for a sprained ankle purchased after a doctor's visit for treatment would be deductible. Those same bandages purchased at