If you've ever stared at a leftover FSA balance in December, you know the feeling. You put money aside for health costs, life got busy, and now you're hoping it doesn't vanish. That's the "use it or lose it" fear, and it's real.
But the rules for FSAFEDS carryover are friendlier than most people think. Some of your leftover money can roll into next year. Some can't. And there's a big difference between a carryover and a grace period, even though people mix them up all the time.
Let's break down how the federal flexible spending account rules work, where you could lose money, and how to avoid it.
FSAFEDS Carryover vs. Grace Period: The Basics
A flexible spending account (FSA) lets you set aside pre-tax money from your paycheck for certain costs. Because the money skips federal income tax and Social Security/Medicare taxes, you keep more of what you earn.
The catch is the deadline. FSA money is tied to a plan year, and what you don't use by the end can be forfeited. That's the heart of "use it or lose it" FSAFEDS rules.
What's a grace period?
A grace period gives you extra time after the year ends, usually about 2.5 months, to spend leftover money. Your old balance stays open for new expenses until the grace period ends.
What's a carryover?
A carryover moves a limited amount of unused money into the next plan year. The IRS sets the cap each year. You can spend it any time in the new year.
Which one does FSAFEDS use?
FSAFEDS, the FSA program for civilian federal employees, uses the carryover. It does not offer both. If you hear a coworker talk about a "grace period," they may be thinking of an older rule or a private-sector plan.
Here's how the three FSAFEDS accounts compare:
- Health Care FSA (HCFSA): Has carryover.
- Limited Expense HCFSA (LEX HCFSA): Dental and vision only, and also has carryover.
- Dependent Care FSA (DCFSA): No carryover. Pure use it or lose it.
Rules and limits change, so double-check the current numbers at FSAFEDS.gov and on OPM.gov.
If you're a service member, FSAFEDS is built for civilian employees. Your health coverage runs through TRICARE, and Military OneSource can point you to what applies to you. If you're a military retiree working a civilian federal job, you may qualify as a civilian employee.
The Key Numbers for 2026
Here are the main figures to know:
- HCFSA maximum election: $3,400 for 2026
- Minimum election: $100
- Maximum carryover: $680 (into 2027)
- Minimum to carry over: $25
- Claims deadline: April 30 of the next year
Your carryover doesn't count against your new election limit. So if you carry over $680 and elect $3,400 next year, you can have both.
Still, confirm these numbers when you enroll. The IRS adjusts them most years.
How FSAFEDS Carryover Works (and Where You Can Still Lose Money)
Here's the thing: the carryover is helpful, but it's small. Think of it as a safety net, not a savings account.
The $25 rule
If you have at least $25 left at the end of the plan year, FSAFEDS carries over the lesser of two amounts:
- Your leftover balance, or
- The IRS maximum ($680 for the 2026 plan year)
If you have less than $25, it's gone. If you have more than the maximum, you lose the extra.
The timeline
FSAFEDS doesn't lock in your carryover on December 31. You get until April 30 to submit claims for expenses from the old year. This is called the "run-out" period.
After that deadline, FSAFEDS tallies what's left and moves your carryover into the new year. So there's a gap between the year ending and your carryover showing up. Keep your receipts, and don't wait until April 29 to file.
The HSA catch
This one surprises people. If you pick a high-deductible health plan and want to contribute to a Health Savings Account (HSA), a regular HCFSA carryover can make you ineligible. That's because a general-purpose FSA counts as other health coverage.
The workaround is a Limited Expense HCFSA, which covers only dental and vision. If this is you, read FSAFEDS's current guidance carefully. Our open season guide for FEHB, FEDVIP, and FSA plans covers how these pieces fit together.
Dependent Care FSA: Different Rules, Same Fear
The DCFSA pays for child or adult care that lets you (and your spouse, if you're married) work. Think daycare, after-school programs, or summer day camp.
No carryover, no grace period
This is the strictest of the three accounts. Whatever you don't spend on eligible care in the plan year is forfeited. You still have until April 30 to file claims for care you got during the year. But you can't spend the money on new care after December 31.
Pay-as-you-go
The DCFSA also works differently from the health FSA. You can only be reimbursed up to what's actually been deducted from your paychecks so far. Your health FSA gives you the full-year amount on day one, but the DCFSA does not.
The limit
The usual household limit was $5,000. Starting in 2026, a new tax law raised it to $7,500 ($3,750 if married filing separately). Check FSAFEDS for how that applies to your account.
Because there's no safety net, elect carefully. If your child starts kindergarten in September, don't plan on a full year of daycare costs.
Practical Examples: What You Could Lose (or Keep)
Let's walk through four situations with real dollar amounts. These use the 2026 carryover maximum of $680.
Example 1: The careful planner
Maria is a GS-9 who elects $2,000. She spends $1,850 by December 31 and files all claims on time. She has $150 left.
- $150 is above the $25 minimum.
- $150 is below the $680 cap.
- Result: All $150 carries over. She loses nothing.
Example 2: The over-saver
Dave elects the max, $3,400, thinking his family will have big dental bills. They don't. He spends $2,200 and has $1,200 left.
- Carryover cap: $680
- Amount lost: $1,200 − $680 = $520
That's $520 forfeited. If Dave is in the 22% tax bracket, he paid roughly $120 less in tax on that money. But he still lost more than he saved.
Example 3: The just-under-$25 problem
Chris elects $1,200 and spends $1,185. He has $15 left. Since $15 is below the $25 minimum, he loses it. It's a small loss, but it's easy to avoid. Spend it on eye drops or a copay before year end.
Example 4: The dependent care miss
Tasha elects $5,000 for the DCFSA. In June, her family moves and she stops needing daycare. She's only used $2,500. With no carryover, the other $2,500 is at risk. Unless she has a qualifying life event that lets her change her election, she can't just roll it forward.
Why FSAs still often win
Let's say you're in the 22% federal bracket and pay 7.65% in Social Security and Medicare taxes. That's about 29.65% in combined savings.
On a $2,000 election, you'd save about $593 in taxes. Even if you forfeited $100, you'd still come out ahead. The goal isn't to avoid FSAs. It's to avoid over-electing.
To see how those tax savings fit your bracket, try our tax calculator.
Common Mistakes and Misconceptions
A lot of FSA losses come from the same few mix-ups.
- "I have a grace period." FSAFEDS uses a carryover for health FSAs, and DCFSA has neither.
- "All my leftover money rolls over." Only up to the IRS cap. Anything above $680 (for 2026) goes away.
- "The carryover applies to dependent care." It doesn't.
- "I can use my balance on insurance premiums." FSAs don't cover FEHB, FEDVIP, or other premiums.
- "Leaving my job saves my balance." Generally, you can only claim expenses from while you were covered. Our guide on what happens to your FSA when you retire explains how separation works.
- "I'll file my claims in April." Waiting is risky. Receipts get lost and deadlines sneak up.
- "I can change my election anytime." You can only change it during open season or after a qualifying life event, like a birth, marriage, or divorce.
Step-by-Step: How to Avoid Losing FSA Money
Here's a simple plan you can follow.
- Add up last year's costs. Look at copays, prescriptions, dental, vision, and glasses. Your insurance statements make this easy.
- Know your known costs. Planning braces, new glasses, or a surgery? Add those in. Also check your FEHB plan costs for 2026 for deductibles and copays.
- Estimate your costs. The FEHB calculator is a quick way to compare plan costs and estimate what you'll pay out of pocket. It's free, and it takes a lot of the guesswork out of picking an FSA amount.
- Elect a bit low. If you're unsure, pick a number slightly under what you expect. You can always pay the rest with regular dollars.
- Check the balance in October. Log in to FSAFEDS and see how much is left.
- Spend smart in November and December. Book dental cleanings, buy glasses or contacts, refill prescriptions, and stock up on eligible items.
- File claims early. Don't wait for April 30. Keep your receipts and submit as soon as you can.
- Plan your carryover. If you'll have more than $680 left, spend the extra before December 31.
- Recheck at open season. If you got a new plan or had a life change, adjust your election. Moving from self-only to family coverage? Our guide on picking the right FEHB tier can help.
- Know what's eligible. FSAFEDS has a list of eligible expenses. When in doubt, check before you buy.
If you're adding a spouse or baby, see our article on adding a family member to FEHB. It covers deadlines that matter for FSA elections too.
What About Other Official Resources?
You don't have to rely on one source. Here are good places to double-check:
Rules do change. The IRS can adjust limits, and Congress can change the tax code, as it did for dependent care. Always check the current year's numbers before you make your election.
The Bottom Line
Here's what to remember about FSAFEDS carryover and how to avoid losing FSA money:
- FSAFEDS uses a carryover, not a grace period. Health FSA balances can roll over in limited amounts.
- The 2026 carryover cap is $680. You need at least $25 left to carry anything over.
- Dependent Care FSAs have no carryover. Anything left over at year's end is forfeited.
- Claims are due April 30. File early so you're not scrambling.
- Elect a little low. The tax savings are real, but a forfeited balance can wipe them out.
- Check your balance in the fall. It's the easiest way to avoid a December surprise.
FSAs are a smart tool when you use them right. A little planning in the fall can save you hundreds of dollars.
Ready to get your numbers? Try the calculator to compare health plan costs and see your likely out-of-pocket spending. Then use the tax calculator to see how much an FSA could save you. For more on your benefits, visit our benefits guide.