If you have a flexible spending account through work, there is a decent chance you are sitting on money that will evaporate in a matter of weeks.
Unlike a bank account, an FSA is use-it-or-lose-it by design.
Spend nothing, and your employer keeps what you set aside.
The catch is that most people don't even know their own deadline.
Many plans run on the calendar year, which means the clock hits zero on December 31.
Others follow a mid-year plan year, so their cutoff lands in June or September instead.
A quick call to your benefits administrator or a look at your plan documents settles the question in about five minutes.
There is also a confusing patchwork of grace periods and carryover rules.
Some employers give you up to 2.5 extra months to spend down the balance.
Others let you roll a limited amount into the next year, a figure that adjusts with inflation.
Plenty of plans offer neither, and that is where the panic sets in every December.
Say you elected $2,000 for the year and have $600 left with two weeks to go.
If you do nothing, that $600 is simply gone.
It does not roll into a savings account, and it does not come back as a paycheck bonus.
It is the single most expensive form of procrastination in personal finance.
So what can you actually buy before the buzzer?
Bandages, thermometers, blood pressure monitors, contact lens solution, and most over-the-counter pain relievers qualify.
So do prescription sunglasses, hearing aid batteries, and many pregnancy and fertility products.
The list gets more interesting if you squint.
So do some acne treatments, menstrual products, and even certain skincare items if a doctor ties them to a diagnosis.
First-aid kits, breast pumps, and diabetic supplies are all fair game.
You can also stockpile eligible items you will use eventually.
Nobody is checking whether you needed twelve boxes of bandages in one calendar year.
Buying next year's supplies now keeps the money from vanishing.
Some FSA debit cards auto-approve certain merchants and reject others.
If a purchase gets denied, you often need to submit a receipt manually.
Keep every receipt until the claim clears, because plans can ask for documentation months later.
There is a bigger strategic point buried here.
An FSA lowers your taxable income, which is why it exists.
But the savings only materialize if you actually spend the money.
Elect too much and you are effectively donating your own wages back to your employer.
That is why the smartest move is to estimate next year's expenses honestly before open enrollment, then spend down this year's balance on things you will genuinely use.
A dental cleaning, new glasses, a refill on prescriptions, or a bulk order of basics all count. **The takeaway:** This is one deadline where ignoring it costs you real money.
Log into your account today, confirm your plan's cutoff, and spend the balance on things you will actually need.
Final Thoughts
Waiting until the last week is how people end up buying random vitamins at 11 p.m. on New Year's Eve.