Your flexible spending account is quietly turning into a countdown clock.
If you set aside money through an employer-sponsored FSA this year, that balance typically has to be spent by December 31 — or you forfeit whatever is left.
For households that tucked away $2,000 or $3,000 to cover medical costs, that can mean hundreds of dollars evaporating overnight.
The rules vary more than most people realize.
Some employers offer a grace period of up to 2½ months into the new year, while others allow a carryover of a limited amount — the IRS set that cap at $640 for 2025.
The only way to know which camp you're in is to check your plan documents or call your benefits administrator directly.
So what actually counts as a qualified expense?
Over-the-counter medications, allergy pills, and pain relievers became eligible again after the CARES Act.
So did menstrual products, sunscreen, and first-aid supplies.
Bandages, thermometers, blood pressure monitors, contact lens solution, and even some pregnancy tests qualify.
Dental and vision costs are the classic play.
If you still need a cleaning, cavity filling, new glasses, or an exam, booking before the deadline is one of the simplest ways to drain a balance without waste.
Prescription sunglasses count too, and so do some LASIK procedures.
Insurance premiums generally don't qualify.
Gym memberships usually don't, unless they're prescribed for a specific medical condition and your plan agrees.
Vitamins and supplements are eligible only if recommended to treat a diagnosed condition — a note from your doctor usually isn't enough on its own.
If you're staring down a balance with days to go, there are legitimate last-resort moves.
Many FSA storefronts let you stock up on eligible items you'll eventually use anyway — think contact lenses, glucose test strips, or a year's worth of bandages.
Just avoid buying things you'll never touch; spending $200 to save $150 in taxes is a losing trade.
One more wrinkle worth checking: reimbursement deadlines are separate from spending deadlines.
You might have until March or April to file a claim for a purchase you made in December.
Miss that paperwork window, though, and the money is gone regardless.
The bigger lesson is planning for next year.
If you routinely leave money on the table, consider lowering your election.
An FSA saves you income tax, but only on dollars you actually spend.
For predictable expenses like monthly prescriptions or regular copays, it's close to free money.
For "maybe I'll need it" guesses, it's a gamble. **The takeaway:** Treat your FSA like a gift card with an expiration date, not a savings account.
Check your plan's specific rules today, not on December 30 — and if you have a balance, spend it on things you'd buy anyway.
Final Thoughts
The tax break is real, but only if you use it.