Using FSA or HSA Money for Oral GLP-1s Before Year-End

FSA vs. HSA: the one difference that matters in December

Both accounts let you pay for qualified medical expenses with pre-tax money. Only one of them has a year-end deadline.

So for FSA holders, the deadline is real. For HSA holders, the main question is whether an expense qualifies and is well documented. There's no need to rush spending.

Does an oral GLP-1 count as a medical expense?

FSAs and HSAs reimburse "qualified medical expenses," a term the IRS defines in Publication 502 and its related FAQs. The parts that matter here:

• Prescription drugs count. Publication 502 includes amounts paid for prescribed medicines and drugs, meaning drugs that require a doctor's prescription. Wegovy tablets, Foundayo and Rybelsus/Ozempic tablets are all prescription-only.
• Weight loss for a diagnosed disease counts. Weight loss for general health doesn't. The IRS says weight-loss costs are medical expenses only when they treat a specific disease diagnosed by a physician. Its examples include obesity, hypertension and heart disease. Spending to improve appearance or general well-being doesn't qualify. The IRS repeated this in its nutrition and wellness FAQ, last updated September 23, 2026.
• Clinician fees. Publication 502 includes payments for medical services from physicians and other licensed practitioners. The IRS page we reviewed doesn't mention telehealth specifically. A virtual visit to diagnose or treat a condition fits the general definition, but your plan administrator makes the final call. HealthEquity, a large HSA administrator, says qualifying provider visits, including telehealth, can be paid from HSA or FSA funds.
• Drugs shipped from abroad. Publication 502 says prescribed drugs ordered and shipped from another country generally aren't includible, with narrow exceptions for legally imported drugs.

What about compounded or "oral tirzepatide" products?

Compounded preparations are not FDA-approved. The FDA's page on unapproved GLP-1 drugs (updated October 1, 2026) also warns about counterfeit and falsely labeled products sold online. There is no FDA-approved oral tirzepatide. Whether an administrator will reimburse a compounded product is a plan-level decision we can't answer for you. Before you spend year-end money, it's worth reading our oral tirzepatide explainer and FDA warning-letter tracker.

FSA deadlines: carryover, grace period or neither

Employers may soften the use-it-or-lose-it rule in one of two ways. They aren't required to offer either, and HealthCare.gov notes they can't offer both.

Sources: IRS Rev. Proc. 2025-32 §4.15 ($3,400 limit and $680 carryover for 2026); IRS Publication 969; HealthCare.gov. Plan years that don't follow the calendar have different dates.

A quick hypothetical: say you have $900 left on December 1 and your plan allows a $680 carryover. If you spend nothing else, $680 rolls over and $220 is forfeited. If you fill $220 or more of eligible prescriptions in December, nothing is lost.

Two more FSA rules matter at year-end:

• Expenses must be incurred during the coverage period. Publication 969 says an FSA can't reimburse expenses in advance for future or projected care. Ask your administrator how it dates a prescription fill, especially a 2- or 3-month supply bought in late December.
• Claims deadlines (often called a run-out period) are separate from the spending deadline. Many plans give you extra time after the plan year to submit claims for expenses you already incurred. Your plan document sets that date.

HSA rules: no deadline, but a few traps

• Date of establishment. Publication 969 says expenses incurred before you opened your HSA aren't qualified medical expenses. A prescription filled before your account existed can't be reimbursed later.
• Non-qualified withdrawals cost extra. Money taken out for anything other than qualified medical expenses is taxed as income and generally hit with an additional 20% tax. The extra tax doesn't apply after age 65, disability or death. If a GLP-1 expense might not qualify (cosmetic use, for example), find out first.
• Telehealth won't break your eligibility. Under Public Law 119-21 (enacted July 4, 2025), a high-deductible plan can cover telehealth before the deductible without losing HSA compatibility, for plan years beginning after 2024, according to Publication 969.
• Contribution timing. Publication 969 lets you make 2025 contributions through April 15, 2026, and the same rule generally applies to 2026 contributions up to the 2027 filing deadline. If you haven't maxed out 2026, there may still be room. Confirm with your custodian or tax preparer. For 2027 the IRS has set HSA limits of $4,500 (self-only) and $9,000 (family) in Rev. Proc. 2026-24.

Documentation and letters of medical necessity

FSA claims are usually reviewed before they're paid. Publication 969 says the FSA needs a written third-party statement showing the expense and its amount, plus your statement that no other plan has paid it. Debit cards can reduce that step if they meet IRS substantiation rules.

For weight-related prescriptions, administrators may ask for more. HealthEquity lists a receipt, the prescription, or a letter of medical necessity (LMN) as possible FSA documentation. An LMN usually comes from your prescriber and states the diagnosis being treated. Practical steps:

• Ask your administrator whether GLP-1 claims need an LMN before your December fills. Waiting can cost you the deadline.
• If you get care through telehealth, ask the clinician's service how to request an LMN and how long it takes.
• Keep pharmacy receipts that show the drug name, strength, date and amount paid. Self-pay programs often send their own receipts, so save those too.

If your FSA debit card is declined at a manufacturer's self-pay pharmacy, you can usually pay another way and submit a claim with receipts. Check your plan's process first.

Matching year-end money to real prices

Manufacturer self-pay prices make the math predictable. These were listed in October 2026 and are subject to change, so confirm before you buy.

Self-pay programs aren't insurance. Commercially insured patients may qualify for manufacturer savings cards instead; government beneficiaries are excluded from those cards. See our pricing hub and cost with and without insurance guide.

Some people want to stock up in December. Look at three things first: your FSA administrator's rules on when an expense counts as incurred, the pharmacy's refill limits, and your prescription itself. A prescriber may not want a larger supply while your dose is still changing. For a longer view of costs, see our 5-year cost breakdown.

Planning for 2027

If your workplace open enrollment is happening now, an expected year of GLP-1 costs is a reasonable thing to factor into your 2027 FSA election. We hadn't confirmed the IRS's 2027 health FSA limit at publication, so check your enrollment materials for the current figure. If insurance coverage is the bigger question, our insurance coverage guide covers prior authorization and appeals.

A December 31 checklist

• Look up your FSA balance and plan-year end date. Not every plan follows the calendar year.
• Find out which extension you have: a carryover (up to $680 for 2026), a grace period (up to 2½ months) or neither.
• Ask whether GLP-1 claims need an LMN and request one from your prescriber now if they do.
• Confirm your diagnosis is documented. IRS eligibility for weight-related spending depends on treating a diagnosed disease.
• Time any fills with your prescriber, not just the calendar, especially if your dose is changing.
• Check price deadlines. LillyDirect's reduced prices on two Foundayo doses are listed through December 31, 2026.
• Save every receipt showing drug, strength, date and amount, for FSA claims and HSA records.
• Note your claims run-out deadline so December expenses are submitted on time.

This guide explains general IRS rules and is not tax, legal or medical advice. Your plan document and your benefits administrator control what your FSA or HSA will reimburse. A tax professional can apply the rules to your situation.