There's a pile of money with your name on it, and it's quietly shrinking while you read this.
If you have a flexible spending account through work, that balance doesn't roll over forever.
Use-it-or-lose-it rules mean unspent funds can vanish at year's end, and the deadlines aren't always December 31.
Here's the catch that trips people up: your plan might offer a grace period of up to 2.5 months into the next year, or a carryover of a limited amount, but not both.
The IRS sets the ceiling on carryover, and it adjusts most years, so the number your coworker quoted two years ago may be stale.
Check your own plan documents, not the break room rumor.
You can swipe your FSA card at the pharmacy, but if the charge gets flagged, you'll need documentation showing the expense was eligible and incurred during the plan year.
A purchase made in January doesn't count against last year's balance just because you finally got around to it.
Prescription glasses and contacts, dental work, copays, bandages, thermometers, pregnancy tests, and a long list of over-the-counter items that became eligible without a prescription a few years back.
Eyeglasses are the classic year-end scramble for a reason.
An eye exam on December 20 might not leave enough runway to order frames before the plan year closes.
Dental work needs scheduling weeks ahead because offices book up in December.
If you're close to a deadline, call your provider and ask what can be billed before midnight on the last day.
Log into your benefits portal and find the exact deadline, not the one you remember.
Then list what you already know you'll need next year, from contact lenses to a crown you've been putting off.
If your plan allows carryover, confirm the cap before you assume the whole balance survives.
If you paid out of pocket and filed a claim, the clock on your plan year matters more than the clock on the check.
Submit receipts early, keep digital copies, and screenshot your submission confirmations.
Denied claims are usually fixable, but only if you catch them before the appeal window shuts.
One more thing: if you're changing jobs or your plan is ending, that's a separate deadline with its own rules.
A job change can cut off your access to the account entirely, and the money doesn't follow you.
Ask HR in writing what happens to your balance and by when.
The people who win at this aren't organized geniuses.
They just check the date and spend the money on things they were going to buy anyway.
Set a reminder for two weeks before your deadline, and treat it like a bill you actually want to pay.
The system is designed so that forgetting is easy and the forfeited dollars quietly pad your employer's books.
That's not a conspiracy, it's just how the rules work.
Final Thoughts
Spend thirty minutes on this before the deadline and you'll likely come out ahead of most of your coworkers.