If you have a flexible spending account through work, there is a decent chance you are sitting on money that will evaporate in the next few weeks.
Unlike a bank account, an FSA is a use-it-or-lose-it arrangement.
Miss the deadline, and whatever is left goes back to your employer, not to you.
Most plans run on a calendar year, which puts the standard deadline at December 31.
Some employers offer a grace period into mid-March, and others allow a carryover of a limited amount into the next plan year.
Those two breaks are not the same thing, and plenty of workers confuse them until it is too late.
Here is the part that catches people off guard.
The rules are set by your employer's plan, not by the IRS alone, so the deadline and the carryover amount vary from one workplace to the next.
The only source that matters is your plan's summary description or the benefits portal you log into at open enrollment.
A coworker's answer means nothing if you sit in a different plan.
Contribution limits for health FSAs sit in the low four figures, and dependent care FSAs allow several thousand more.
If a family of four typically spends $1,500 a year on copays, prescriptions, and glasses, that is real money tied to a date on a calendar.
Eligible expenses are broader than most people assume, which is why so much money gets forfeited.
Bandages, contact lens solution, thermometers, blood pressure monitors, sunscreen, and menstrual products generally qualify.
So do dental work, vision hardware, hearing aids, and many over-the-counter medicines, though some plans still require a prescription for those.
You can generally use them for day care, before- and after-school programs, and summer day camp for kids under 13, but not for overnight camp or virtual schooling.
If you have a balance there, check the specific list before you assume an expense counts.
The two traps that snag the most people are timing and documentation.
Swiping your card on December 30 does not guarantee the claim clears if the provider submits late or the charge gets reversed.
And a receipt without the right details — date, provider, service, amount — can get rejected after the deadline has already passed.
There is a way to avoid the scramble entirely, and it is boring.
Track your balance monthly instead of once a year.
Estimate next year's contributions from what you actually spent this year, not from what you hope to spend.
If you chronically forfeit money, you are essentially handing your employer an interest-free loan.
A quick note on why this system exists at all.
FSAs let you pay for care with pretax dollars, which saves you the income tax and payroll tax you would otherwise owe.
The tradeoff is that the money is not really yours once it is in the account — and the plan administrator has little incentive to remind you before it disappears.
One more thing worth checking while you are in the portal: whether your plan lets you submit claims for expenses incurred before the deadline, even if you file the paperwork later.
Some allow a run-out period of a few extra weeks for submission.
That is different from the grace period, and it can be the difference between a reimbursement and a forfeiture.
Find the exact deadline, the carryover rule, and your current balance.
Then either spend it on something you actually need or accept, with clear eyes, that you are choosing to donate it.
The loudest voices in personal finance treat FSAs as a no-brainer tax win, and for disciplined planners they usually are.
Final Thoughts
But a benefit that quietly expires is not free money — it is a bet that you will spend more than you earn back, and a lot of Americans lose that bet every single year.