If you stuffed money into a flexible spending account this year, you already made the bet.
Now comes the part nobody advertises: the clock.
Most FSAs require you to spend the balance by December 31, or you forfeit whatever is left.
The average employee contributes somewhere in the neighborhood of $1,500 to $2,000 a year, according to benefits industry surveys, and a meaningful slice of workers leave hundreds behind.
Employers get to keep unspent funds under IRS rules, which is a detail worth sitting with.
The money came out of your paycheck pre-tax, and if you don't use it, it doesn't roll into your savings account.
Some employers offer a grace period, typically until March 15, letting you spend last year's balance in the new year.
Others use a carryover, which the IRS set at $640 for 2025, letting you roll a limited amount forward.
Your HR portal or benefits summary has the answer, and it's worth checking today rather than the last week of December.
There's also the dependent care side, which operates on its own timeline and its own logic.
If you set aside money for daycare or after-school care, you can claim reimbursement for expenses incurred during the plan year, but the paperwork still has to be filed.
Parents who assume the money auto-applies to January tuition are often surprised.
The eligible expense list is longer than most people realize.
Prescription glasses and contacts, dental work, therapy, bandages, sunscreen with SPF 15 or higher, menstrual products, breast pumps, and a long tail of over-the-counter items that became permanently eligible in 2020.
If you wear glasses, an extra pair is a classic move.
If you've been putting off a dental cleaning, book it.
Just don't buy stuff you'll never use just to zero out the balance.
Spending $200 to save $60 in taxes is a losing trade.
The scam-adjacent angle here is the flood of "FSA store" websites and ads that appear every December.
Some are legitimate retailers with genuinely eligible inventory.
Others mark up prices knowing shoppers are desperate and deadline-pressured.
Compare prices against your regular pharmacy or big-box store before clicking buy.
The eligibility label doesn't mean the price is fair.
One more trap: debit card transactions sometimes get flagged and require receipts later.
If you swipe your FSA card and never submit documentation, the charge can be reversed and the funds returned to your account, where they may then expire.
Keep your receipts in one folder, digital or otherwise.
If you're reading this with a balance still sitting there and only days left, the practical move is a same-day appointment or an online order from a retailer that accepts FSA cards and ships fast.
Don't wait for a rebate or a mail-in claim if you can avoid it. **The takeaway:** FSAs aren't a savings account, they're a use-it-or-lose-it coupon with an expiration date.
The system is designed so that forgetting is easy and forfeiting is quiet.
Final Thoughts
Set a calendar reminder for next year in October, not December, and estimate your contribution based on last year's actual spending rather than optimism.