The Dependent Care FSA Use-It-or-Lose-It Rule: Grace Periods, Deadlines, and How to Not Forfeit Your Money

January is when most people learn the hardest rule of the Dependent Care FSA: unlike a health care FSA, there is no carryover. You either have a grace period or you don't, and if you don't, every unspent dollar on December 31 is gone. Here's how the deadline actually works and how to keep your money.

Running the numbers for next year? Use our Dependent Care FSA vs Child Care Tax Credit Calculator to find your best strategy before open enrollment closes.

The rule in one paragraph

A Dependent Care FSA is a use-it-or-lose-it account, full stop. IRS rules for dependent care plans allow exactly one safety valve: an employer may offer a grace period of up to 2 1/2 months after the plan year ends, which for a calendar-year plan means January 1 through March 15. During that window you can incur new qualifying expenses against last year's leftover balance. What a dependent care plan may not offer is a carryover. That distinction trips up a lot of people, because health care FSAs can allow a carryover (up to $680 from 2026 to 2027) or a grace period, but not both. Dependent care plans get the grace period option only. No grace period, no carryover, no second chances.

The deadlines that actually matter

There are three dates on a calendar-year plan, and confusing any two of them costs people real money every year:

1. December 31: the plan year ends. Expenses must be incurred by this date to count against this year's balance, unless you have a grace period.
2. March 15: the end of the grace period, if your employer offers one. Expenses incurred January 1 through March 15 can be reimbursed from the prior year's leftover balance.
3. April 30: the claims filing deadline used by many plans (FSAFEDS, for example, gives participants until midnight Eastern on April 30 to file claims for the prior benefit period and grace period). Your plan's run-out date may differ, so check your summary plan description.

Notice the word incurred. Reimbursement is based on when the care was provided, not when you paid the bill. Prepaying February's daycare in December does not backdate the expense. This is the single most common misunderstanding I see: people think paying early saves them, and it doesn't.

A worked example: the $1,400 gap

Say you elected the full $7,500 for 2026 and had a good year: your actual childcare spending came in at $6,100. On January 1, $1,400 sits in your account. Your employer offers the standard grace period.

From January 1 to March 15, you incur $1,900 in daycare costs. Here's how it plays out: the first $1,400 of those expenses drains the leftover 2026 balance, and the remaining $500 applies to your 2027 election (assuming you re-enrolled). You file both claims by April 30 and lose nothing.

Now the bad version. Same numbers, but your employer's plan offers no grace period. On December 31, that $1,400 is forfeited. Not refunded, not rolled over, not applied to next year. Forfeited.

And the version that stings the most: you have a grace period but stop incurring expenses. Maybe your kid started kindergarten in January and your care costs dropped to zero. The grace period only helps if you actually incur qualifying care expenses in the window. No expenses, no reimbursement, same forfeiture.

Where does the forfeited money go?

Your employer keeps it. Under IRS cafeteria plan rules, forfeited balances may be used to offset plan administration costs, or returned to participants on a uniform, nondiscriminatory basis (usually as a small reduction in next year's required contribution). What employers cannot do is hand it back to you because you forfeited more than someone else. And neither your employer, OPM, nor anyone else has authority to grant exceptions or waivers. The rule is the rule.

This is also why dependent care FSA money is not like an HSA. It does not follow you to a new job. If you leave your employer with an unreimbursed balance, it stays behind.

How to never forfeit again

I take a deliberately conservative approach to my election now:

• Elect what you'll definitely spend, not what you might. Look at your last 12 months of actual care costs, not your budget. If daycare is $550/month for 9 months plus $800 of summer day camp, that's $5,750. Elect $5,750, not $7,500.
• Check whether your plan has a grace period before you elect. Ask HR or read the summary plan description. The grace period is optional for employers. Don't assume.
• Front-load care spending in Q1 if you carry a balance. If you enter January with leftover funds, schedule the care you know you'll need: spring break camp, extra babysitting hours, before-care. Incurred beats paid.
• Remember the credit is waiting. Money you forfeit from the FSA is doubly lost because those same dollars could have counted toward the Child and Dependent Care Tax Credit instead. Under-electing the FSA slightly and claiming the credit on the rest often beats over-electing and forfeiting.

Not tax advice: this article explains general IRS rules for education. FSA plan designs vary by employer; confirm your plan's grace period, claim deadlines, and eligible expenses in your summary plan description or with your benefits administrator before making elections.