When does my FSA actually expire?
For most U.S. employers, the Flexible Spending Account (FSA) plan year is the calendar year, which means your remaining FSA balance expires on December 31, 2026. If you contributed the IRS maximum ($3,400 for plan years beginning in 2026) and haven’t spent it down, the IRS “use it or lose it” rule says any leftover dollars revert to your employer.
That deadline isn’t always the real deadline, though. Two optional plan features can extend it.
The two extensions: grace period vs. carryover
The IRS lets employers attach one of the following extensions to a Health FSA. They cannot offer both at once.
Grace period (up to 2.5 months)
A grace period gives you an extra 2.5 months after the plan year ends to spend the prior year’s funds. For a calendar-year plan, that pushes your effective deadline from December 31, 2026 to March 15, 2027. You’re spending 2026 dollars during that window — they don’t reset, and any new 2027 contributions are tracked separately.
Carryover (up to $680)
Carryover lets you roll forward a capped portion of unused funds into the next plan year. For plan years beginning in 2026, the IRS limit is $680. Anything above that is forfeited on December 31. Carryover dollars don’t have a separate deadline — they merge with your 2027 balance and follow the 2027 plan year.
Neither
Some employers offer no extension at all. In that case, December 31, 2026 is a hard wall. This is more common at smaller employers and at companies that haven’t refreshed their plan documents recently.
How to check which one your plan has
You don’t have to guess. Three places to look, in order of speed:
- Your benefits portal — log in and look for the FSA “plan year” or “deadline” section. Most modern administrators (HealthEquity, WEX, Optum, Navia) show your spend-down deadline directly on the dashboard.
- Your Summary Plan Description (SPD) — the legal document your employer files describing how your FSA works. Search the PDF for “grace period” or “carryover.”
- Your HR or benefits team — a one-line email asking “does our Health FSA have a grace period, carryover, or neither?” usually gets a same-day reply.
If your plan administrator gives you one answer and HR gives you another, trust the SPD. The plan document is what governs.
What happens if you don’t spend it in time
Forfeited FSA money goes back to your employer. The IRS prohibits employers from returning the cash to you directly — that’s the trade-off for the pre-tax benefit. Employers can use forfeited funds to offset administrative costs of running the plan or redistribute them to remaining participants, but those decisions happen behind the scenes.
For a deeper look at the forfeiture mechanics — and whether anyone actually wins from your unspent money — read What Happens to Unused FSA Money?.
How to spend down before the deadline
The catch is that “FSA-eligible” covers a much broader category list than most people realize. A few that consistently surprise people:
- Sunscreen (SPF 15+ broad spectrum) — including most of the brands you already buy
- First aid kits, thermometers, and blood pressure monitors
- Contact lens solution and reading glasses
- OTC pain relievers, allergy meds, and cold medicine
- Heating pads, TENS units, and braces
- Therapy copays and teletherapy sessions
If you know your remaining balance, the fastest path is the balance spend-down tool — enter what’s left and we’ll generate a bundle of eligible products that adds up to it.
A note on plan year vs. calendar year
Most FSAs run January 1 through December 31, but some employers use a fiscal year (e.g., July 1 through June 30) or a custom plan year tied to their benefits enrollment cycle. If your plan year doesn’t match the calendar, every deadline above shifts accordingly: your 2.5-month grace period runs from your plan-year end, and your $680 carryover applies to your plan-year transition.
Check the dates on your benefits portal before you assume December 31 is your deadline. A January-renewing plan with a March 15 grace period gives you significantly more room than a hard December 31 cutoff.
Don’t lose your money
The deadline is the deadline. Even small balances are worth spending — a $40 thermometer, a $25 sunscreen, and a $30 first-aid kit takes care of $95 in five minutes. Use the balance tool to get a personalized list, or browse eligible products by category.