Millions of American workers are staring down a deadline that costs real money to miss, and most of them won't notice until it's too late.
If you set aside money in a flexible spending account this year, the clock is running out on funds you already earned.
Unlike a savings account, an FSA comes with a strict use-it-or-lose-it rule.
Money you don't spend by your plan's deadline typically vanishes, and your employer keeps it.
The average household contribution runs well over $1,000 a year, which means a missed deadline can wipe out a grocery-sized chunk of your budget in one silent swoop.
The tricky part is that the deadline isn't one single date.
It depends entirely on your employer's plan.
Some plans close the books on December 31.
Others offer a grace period stretching into mid-March.
A third option, the carryover, lets you roll a limited amount into next year.
The exact rules live in your benefits portal, not in your memory, so this is the week to log in and check.
Most people think of doctor visits, but FSA dollars cover a long list of everyday purchases that fly under the radar.
Over-the-counter medicine, bandages, sunscreen, contact lens solution, menstrual products, and even some pregnancy tests qualify.
So do prescription glasses, dental work, and copays you've already paid but never submitted.
If you have a dependent care FSA, summer camp and daycare bills count too, and those receipts add up fast.
The single biggest mistake is paying out of pocket and forgetting to file the claim.
Swiping your FSA card at checkout handles it automatically, but cash and credit purchases require you to upload a receipt before the deadline.
Many plans also demand that you incur the expense before the deadline, even if you submit the paperwork slightly later.
That distinction trips up thousands of people every year who assume the submission date is all that matters.
If you're sitting on a balance you can't spend in time, a few moves can rescue it.
Stock up on eligible essentials you'll use anyway, like pain relievers, first aid supplies, and vision care products.
Schedule that dental cleaning or eye exam you've been putting off, since appointments booked before the cutoff usually count.
Check whether your plan allows an online FSA store, where you can order eligible items in minutes.
Just confirm the deadline for placing that order, because shipping delays won't buy you extra time.
For anyone with a health savings account instead, the pressure is off.
HSA funds roll over year after year and can even be invested, which is one reason financial planners often prefer them when you qualify.
The catch is that you can't fund both an HSA and a general-purpose FSA at once.
The real lesson here is about attention, not taxes.
An FSA is one of the few benefits where forgetting to act has a direct, measurable cost, and employers aren't required to send a loud reminder.
Set a calendar alert for two weeks before your deadline, snap photos of every receipt, and treat the balance like cash in your wallet.
Final Thoughts
A few minutes in a benefits portal this month can keep hundreds of your own dollars from evaporating.