What Can I Spend My HSA On? Eligible Expenses Guide

A Health Savings Account (HSA) is often called the ultimate tax shelter. It offers a unique triple tax advantage: contributions are 100% tax-deductible, funds grow entirely tax-free through investments, and withdrawals are completely tax-free when used for qualified medical expenses.

However, to unlock this financial powerhouse, you must navigate the strict rules set by the Internal Revenue Service (IRS). Spending your HSA funds on ineligible items can trigger a costly 20% penalty plus ordinary income taxes. This guide explains exactly what you can buy with your HSA, highlights surprising eligible expenses, outlines the rules for "gray area" items, and details how to leverage your account for long-term wealth.

The Foundation: Understanding IRS Publication 502

The ultimate authority on HSA spending is IRS Publication 502 (Medical and Dental Expenses). The IRS defines qualified medical expenses as costs associated with the diagnosis, cure, mitigation, treatment, or prevention of disease, as well as treatments affecting any part or function of the body.

To qualify, the expense must be primarily to alleviate or prevent a physical or mental defect or illness. General health and wellness items—such as a daily multivitamin or a gym membership to "stay in shape"—typically do not qualify unless prescribed by a doctor to treat a specific, diagnosed medical condition.

Surprising Everyday Items That Are 100% HSA-Eligible

Many HSA owners miss out on everyday savings because they don't realize how broad the list of eligible over-the-counter (OTC) products actually is. Thanks to the CARES Act of 2020, you no longer need a doctor's prescription to purchase OTC medicines with your HSA.

Here are some of the most surprising everyday products you can purchase with your HSA debit card:

• Acne Treatments: Over-the-counter creams, cleansers, and patches containing active ingredients like salicylic acid or benzoyl peroxide.
• Sunscreen and Sun Protection: Broad-spectrum sunscreens with an SPF of 15 or higher, as well as SPF-rated lip balms.
• Menstrual Care Products: Tampons, pads, liners, period underwear, and menstrual cups.
• Sanitizing and First Aid: Band-ages, joint braces, thermometers, rubbing alcohol, and complete first-aid kits.
• Allergy and Sinus Relief: Antihistamines, nasal sprays, sinus rinse kits, and decongestants.
• Baby Care Supplies: Breast pumps, milk storage bags, baby monitors, baby sunscreen, and nasal aspirators.
• Sleep Aids and Snoring Solutions: Nasal strips, CPAP machines, and over-the-counter sleep aids.

Dental, Vision, and Mental Health Coverage

Your HSA is not limited to primary care physician visits. It extends broadly across specialized healthcare sectors:

Vision Care

Everything from routine eye exams to corrective procedures is covered. You can spend your HSA on prescription eyeglasses, prescription sunglasses, contact lenses, contact lens cleaning solution, and even LASIK or other corrective eye surgeries.

Dental Care

Qualified dental expenses include preventive cleanings, fillings, root canals, crowns, extractions, and orthodontic treatments like braces or clear aligners (e.g., Invisalign). However, purely cosmetic procedures, such as professional teeth whitening or cosmetic veneers, are strictly excluded.

Mental Health and Therapy

Mental healthcare is deeply integrated into HSA eligibility. You can use your tax-free funds to pay for sessions with a licensed psychologist, psychiatrist, or clinical social worker. Inpatient or outpatient drug and alcohol addiction treatment, including transportation to and from support groups like Alcoholics Anonymous, is also fully eligible.

The "Gray Area": When You Need a Letter of Medical Necessity (LOMN)

Some expenses live in a regulatory gray area. These are items and services that promote general wellness but can also serve as targeted medical treatments. To purchase these items tax-free, you must obtain a Letter of Medical Necessity (LOMN) from your licensed healthcare provider.

An LOMN must clearly state your specific diagnosis, the recommended treatment (including duration), and how this treatment directly alleviates your condition.

Common items requiring an LOMN include:

• Gym Memberships and Personal Training: Only eligible if prescribed to treat a specific diagnosed condition, such as clinical obesity or hypertension.
• Massage Therapy: Eligible if prescribed to treat chronic back pain, physical injury, or severe muscle spasms.
• Vitamins and Supplements: Generally excluded, but eligible if a doctor prescribes a specific therapeutic dosage to treat a deficiency (e.g., high-dose Vitamin D or iron).
• Air Purifiers and Humidifiers: Covered only if prescribed to alleviate severe allergies, asthma, or respiratory conditions.
• Orthopedic Mattresses: Eligible if prescribed to treat structural back issues or severe chronic pain.

Expenses That Are Strictly Prohibited

Using your HSA for non-qualified expenses before age 65 triggers a 20% IRS penalty plus ordinary income tax on the distribution. Even after age 65, when the 20% penalty disappears, you will still pay ordinary income tax on non-qualified withdrawals.

To avoid these penalties, never use your HSA for:

• Cosmetic Surgery: Elective procedures like facelifts, liposuction, or hair transplants.
• Maternity Clothes: Clothing designed for pregnancy is not considered a direct medical expense.
• Teeth Whitening: Any whitening strips, gels, or professional bleaching treatments.
• Health Club Dues: General gym memberships or fitness club fees without a formal LOMN.
• Funeral or Burial Expenses: These do not qualify as medical care under IRS rules.
• Marijuana: Even if legally prescribed or recommended by a doctor at the state level, marijuana remains illegal federally and is therefore an ineligible HSA expense.

Using HSA Funds for Insurance Premiums

As a general rule, you cannot use your HSA to pay for health insurance premiums. However, the IRS allows four major exceptions to this rule:

1. COBRA Premiums: If you lose your job and elect to continue your employer-sponsored health insurance via COBRA, you can pay these premiums tax-free using your HSA.
2. Unemployment Compensation: If you are receiving federal or state unemployment benefits, you can use your HSA to pay your health insurance premiums.
3. Medicare Premiums: Once you turn 65, you can use HSA funds to pay premiums for Medicare Part A, Part B, Part D, and Medicare Advantage plans. Note: You cannot use HSA funds to pay for Medicare Supplement (Medigap) premiums.
4. Long-Term Care Insurance: You can use HSA funds to pay for qualified long-term care insurance premiums, subject to tax-bracket-based annual limits set by the IRS.

Quick Reference: HSA Eligibility Matrix

Expense Category	Eligibility Status	Documentation Required
Prescription Medications	Fully Eligible	Pharmacy receipt
OTC Pain Relievers & Allergy Meds	Fully Eligible	Itemized store receipt
Dental Cleanings & Fillings	Fully Eligible	Dental office invoice
Teeth Whitening	Ineligible	N/A
Massage Therapy	Conditional	Letter of Medical Necessity (LOMN)
Gym Membership	Conditional	Letter of Medical Necessity (LOMN)
COBRA Premiums	Fully Eligible (Under Exception)	Premium billing statement
General Multivitamins	Ineligible	N/A
Medical Travel & Mileage	Fully Eligible	Mileage log & parking receipts

The "Shoebox Strategy": Advanced HSA Wealth Building

Most people use their HSA as a transactional account: they incur a medical bill, pay it with their HSA debit card, and move on. While convenient, this approach misses out on the true power of compounding tax-free growth.

If you can afford to pay for your current medical expenses out of pocket, you should consider the "Shoebox Strategy."

Under IRS rules, there is no time limit on when you must reimburse yourself for a qualified medical expense. As long as the expense was incurred after you originally established your HSA, you can wait years—even decades—to claim your reimbursement.

How the Shoebox Strategy Works:

1. Incur a $500 qualified medical expense today.
2. Pay the $500 bill out of pocket using non-HSA funds.
3. Scan the receipt and save it digitally in a secure folder (your digital "shoebox").
4. Leave that $500 in your HSA, invested in low-cost index funds.
5. Twenty years later, after that $500 has grown to $2,000 through compound interest, withdraw the $500 tax-free. The remaining $1,500 continues to grow tax-free in your account.

This strategy essentially turns your HSA into an auxiliary retirement account, providing you with a pool of tax-free liquidity whenever you need it in the future.

How to Keep Your HSA Safe in an Audit

When you file your taxes, you must submit IRS Form 8889 if you made contributions to or took distributions from your HSA during the tax year. Your HSA administrator will send you Form 1099-SA (showing your distributions) and Form 5498-SA (showing your contributions).

Crucially, HSA administrators do not verify whether your purchases are eligible. The burden of proof lies entirely on you. In the event of an IRS audit, you must provide itemized receipts showing exactly what was purchased, the date of service, and proof that the expense was not reimbursed by another insurance plan.

To audit-proof your HSA:

• Save Itemized Receipts: Standard credit card slips that show only a total dollar amount are insufficient. You need itemized receipts displaying the exact items purchased.
• Go Digital: Store your receipts in a cloud-based folder organized by year. Thermal paper receipts fade quickly, making digital backups a necessity.
• Track Reimbursements: Keep a spreadsheet linking your digital receipts to your HSA distributions to prove you never double-dipped or over-reimbursed yourself.