Your flexible spending account is a use-it-or-lose-it deal, and the clock is running out.
If you set aside money this year through your employer, that account likely has a deadline attached.
Miss it, and the leftover balance doesn't roll into your pocket.
Here's the part that trips people up: the deadline isn't always December 31.
Some employers offer a grace period, usually until March 15, letting you spend last year's funds on new expenses.
Others use a carryover rule, which lets a limited amount (currently $640 for 2025 plans) roll into the next year.
You have to check your specific plan documents, not assume.
Workers who funded an FSA through payroll deductions often have a few hundred dollars sitting there, and a surprising number of them forget to use it.
That money already came out of your paycheck, pretax, so losing it stings twice.
You saved on taxes but got nothing in return.
The eligible expense list is broader than most people realize.
Prescription glasses and contact lenses count.
So do bandages, thermometers, sunscreen, blood pressure monitors, and most over-the-counter medicines now that the rules were loosened.
Dental work, copays, and even some menstrual products qualify.
You can also book a dental cleaning or eye exam before the deadline, even if the appointment happens later, as long as you're charged in time.
You need documentation, and you need to submit claims correctly.
Some FSA debit cards make this easy, but others require you to upload an itemized receipt.
A store receipt showing a total won't cut it if it doesn't list the specific item.
Here's who benefits from you forgetting: your employer.
When FSA funds go unused, federal rules generally let the employer keep that money to offset administrative costs, or spread it across the plan.
The system assumes a chunk of workers won't clear their balance, and that assumption usually holds.
First, log into your FSA portal and find your actual deadline and balance.
Second, if you're close to the cutoff, look at what you can legitimately buy or schedule now.
Third, if your plan allows carryover, figure out how much you can safely push forward rather than panic-spending on things you don't need.
And if your employer offers a grace period, use it, but don't treat it as unlimited.
The bigger money question is whether an FSA even makes sense for you next year.
If you consistently leave money behind, you're essentially lending your employer your own cash interest-free.
A high-deductible health plan paired with an HSA, where funds roll over indefinitely, is often the smarter move.
But that depends on your plan options, which many workers never bother to compare.
The honest takeaway: a deadline isn't a crisis if you plan for it, and it isn't free money if you don't.
Check your balance today instead of the last week of the year, when every appointment slot is booked and every eligible item is sold out.
Final Thoughts
Your unused dollars are counting down whether you're watching or not.