What is the FSA grace period?
The FSA grace period is a plan feature that extends your FSA spending deadline by up to 2.5 months beyond the end of the plan year. For a calendar-year FSA, your effective spending window stretches from January 1 through March 15 of the following year — 14.5 months instead of 12.
It’s an IRS-permitted extension introduced specifically to soften the “use it or lose it” rule. Your employer chooses whether to offer it, and they specify the exact length in your plan document (most pick the full 2.5 months).
How long the extension actually runs
The IRS caps the grace period at 2 months and 15 days past the plan year end. For the most common plan setups:
| Plan year ends | Grace period ends |
|---|---|
| December 31, 2026 | March 15, 2027 |
| June 30, 2026 | September 15, 2026 |
| March 31, 2026 | June 15, 2026 |
Your employer can adopt a shorter grace period (e.g., 30 days or 60 days), but they cannot exceed the IRS maximum.
Not all FSA plans have one
This is the biggest point of confusion: a grace period is optional, not automatic. Roughly 40–50% of Health FSA plans include one. Another 30–40% offer carryover (up to $680 of unused funds rolling into the next plan year). The remaining 10–20% offer neither, in which case December 31 is a hard wall.
Critically, you can’t have both. The IRS rules let your employer pair an FSA with one or the other:
- Grace period OR carryover
- Never both on the same Health FSA
If you’re evaluating which is more valuable, see FSA Grace Period vs. Carryover Rules for the side-by-side.
How to check if your plan has one
Three places to look, fastest to slowest:
- Your benefits portal. Most modern administrators (HealthEquity, WEX, Optum, Navia, Inspira) display your spend-down deadline directly. If you see “March 15” or “2.5-month grace period” listed alongside your balance, you have one.
- Your Summary Plan Description (SPD). This is the legal document your employer files describing how your FSA works. Search the PDF for “grace period.” The SPD is authoritative — if it says you have one, you have one.
- Your HR or benefits team. A one-line email asking “does our Health FSA include a grace period or carryover?” usually gets a same-day reply.
If sources disagree, the SPD wins. It’s the document the IRS would reference in an audit.
What you can buy during the grace period
Functionally, everything FSA-eligible. The grace period doesn’t change the eligibility list — it just gives you more time to spend against last year’s balance. Common high-value purchases during the January–March window:
- Prescription copays and refills — the most reliable way to draw down a balance
- Eye exams, contact lens fittings, and contacts — see Vision Care
- Dental cleanings and procedures — see Dental Care
- Therapy and teletherapy copays — see Can I Use My FSA for Therapy?
- Sunscreen (SPF 15+ broad spectrum) — see Sunscreen & Skincare
- First aid supplies, thermometers, and blood pressure monitors — see First Aid
- OTC pain relief, allergy meds, and cold medicine — see OTC Medications
- Heating pads, braces, and TENS units — see Pain Relief & Therapy
The catch is that the purchase must be incurred within the grace period — not just submitted for reimbursement. “Incurred” means the date you actually received the product or service, not the date the receipt clears.
How grace period funds interact with the new plan year
This is the part that trips people up. During the grace period, you usually have two FSA balances active at once:
- Your prior-year balance (still spendable through March 15)
- Your new-year election (already accruing as paychecks come in)
Most plan administrators will draw from the prior-year balance first by default during grace period purchases — that’s the “use it before you lose it” logic. But the rules vary by administrator. If you want to keep the prior-year balance for a specific upcoming expense, check whether your administrator lets you choose which year a claim posts against.
After March 15, anything left in the prior-year balance is forfeited. The new-year balance continues as normal until December 31.
Common grace period mistakes
Treating it as a 14.5-month plan year. It’s not. Your new election is locked in when the new plan year begins. The grace period is only for spending down what’s left of the prior year.
Waiting too long to submit receipts. Some administrators have a “runout period” — a 60–90 day window after the grace period ends — during which you can submit receipts for purchases made during the grace period. Don’t confuse the runout period with the spending window. The purchase has to happen by March 15; the receipt submission can come later.
Forgetting that elective procedures count. If you’re sitting on $400+ in early March, a dental cleaning or eye exam scheduled before March 15 can convert the balance directly. Services qualify the same way products do.
Assuming you have a grace period because a friend’s plan does. Plans vary by employer. Always check your own plan documents.
How the grace period compares to carryover
| Grace period | Carryover | |
|---|---|---|
| Time extension | Up to 2.5 months past plan year | None — funds merge with new plan year |
| Cap on rolled funds | No cap (anything still in account) | $680 max for plan years beginning 2026 |
| What happens to remainder | Forfeited after March 15 | Forfeited above $680 immediately |
| Best for | High balances, late spenders | Smaller leftover amounts you’ll naturally use |
Neither is universally “better” — it depends on your spending patterns. Grace periods favor people who can drive down a high balance with a few large purchases (procedures, glasses, big stock-ups). Carryover favors people who consistently leave $200–600 unspent and would rather not feel rushed.
Don’t waste the extra time
If your plan has a grace period, you have until March 15 to spend last year’s money. That’s a legitimate two-and-a-half-month buffer most people forget exists. Use the balance tool to convert what’s left into products and services you’ll actually use, or browse eligible products by category to plan deliberately.