Millions of American workers are staring down a deadline that quietly drains their own money if they miss it.
Funds parked in a flexible spending account, or FSA, generally must be spent by December 31 — and whatever is left over can vanish.
Unlike a bank account, an FSA doesn't roll over indefinitely.
The IRS lets employers choose between two options: a grace period of up to 2.5 months into the next year, or a carryover of a limited amount.
If your employer offers neither, unspent dollars simply disappear.
The average household contributes well over $1,000 to a health FSA each year, and a forgotten balance of $300 to $500 is common.
Workers who switched jobs, changed plans, or simply lost track often discover the loss in January — too late to do anything about it.
The good news is that eligible expenses go far beyond a doctor's visit.
Over-the-counter medicines and menstrual products became permanently eligible in 2020.
So did bandages, contact lens solution, sunscreen with an SPF of 15 or higher, first-aid kits, and even some thermometers and blood pressure monitors.
A quick audit of your medicine cabinet can rescue a balance fast.
If your plan uses a debit card, you can often buy eligible items in-store and the amount comes straight out of the account.
Just keep receipts, since the IRS can ask for proof.
Online orders must typically be placed, not just shipped, by the deadline.
If your employer allows a grace period, you get extra weeks — but confirm the exact date in your plan documents rather than assuming.
Dependent care FSAs follow different rules and come with their own trap: the full annual amount is only available as you earn it, and the grace period isn't guaranteed.
Parents juggling daycare or after-school costs should check whether their plan carries a carryover at all.
One more thing worth checking: whether your employer lets you roll unused funds into a health savings account.
Most don't, but a growing number of plans now offer a post-deductible HSA option.
If yours does, it may be the better long-term home for your money.
If you're short on time, spend first on things you'll definitely use — prescriptions, glasses, dental work, therapy copays.
Then sweep the remainder into eligible household staples before the clock runs out. **The bottom line:** an FSA is your own money with an expiration date, and letting it lapse is one of the easiest financial mistakes to make.
Final Thoughts
Ten minutes of planning now beats discovering an empty balance in January.