Insurance & cost
How to use an HSA or FSA for residential mental health treatment
If you have a Health Savings Account (HSA) or Flexible Spending Account (FSA), you may have a significant pool of pre-tax dollars available for mental health and substance use treatment. Here is how to use them.
What qualifies as an eligible expense
IRS Publication 502 defines eligible medical expenses for HSA and FSA accounts. Substance use treatment — including inpatient and outpatient programs — qualifies. Mental health treatment, including therapy and psychiatric care, qualifies. Prescription medications for mental health conditions qualify. Transportation to treatment (mileage, flights, gas) may qualify. Some programs' room and board costs qualify when treatment is the primary purpose of the stay. Importantly, the treatment must be for a diagnosed medical condition — not general wellness or personal growth retreats.
How to use HSA funds
HSA accounts are yours — the money rolls over year to year and belongs to you even if you change employers. For treatment, you can pay directly with your HSA debit card, or pay out-of-pocket and reimburse yourself from the HSA. Keep all receipts and documentation. There is no deadline for reimbursement as long as the expense occurred after the HSA was established.
How to use FSA funds
FSA accounts have a use-it-or-lose-it structure — funds typically must be used within the plan year. If you are planning treatment, check your FSA balance and timing. You can submit claims for treatment expenses with documentation from the provider. Some FSAs require pre-authorization for large expenses.
Maximizing your benefit
If you know treatment is on the horizon, consider maximizing your HSA/FSA contributions during open enrollment. The 2026 HSA contribution limit is worth checking at irs.gov. Every dollar in these accounts is pre-tax, which effectively gives you a 20-30% discount on treatment costs depending on your tax bracket.