HSA vs. FSA: What Is the Difference for Medical Expenses?

An HSA and an FSA can both use pre-tax dollars for qualified medical expenses, but they are not interchangeable. An HSA is generally tied to enrollment in an HSA-eligible high-deductible health plan, belongs to the individual, can carry funds forward, and may be invested. A health FSA is generally employer-sponsored, is subject to plan-year rules, and may have limited carryover or a grace period if the employer offers one.nn

Why the distinction matters for cannabis patientsnNeither account turns every health-related purchase into a qualified medical expense. Eligibility generally follows federal tax rules under Internal Revenue Code §213(d), plus the plan administrator’s substantiation rules. A physician recommendation and state legality do not automatically guarantee that a state-dispensary cannabis purchase is reimbursable.nn

Questions to ask before submitting a claimnReview the plan document, ask for the written reason for any denial, preserve receipts and medical documentation, and consult a qualified benefits or tax professional before treating a disputed expense as tax-free.