FSAs do not roll over — you lose money you don't spend by December 31

Flexible Spending Accounts (FSAs) operate under a "use-it-or-lose-it" rule. Any money you contribute but don't spend on medical or dependent care expenses by the end of the calendar year is forfeited. You cannot carry the balance into the next year, and you cannot get it back as a refund or paycheck deposit.

The only exception is a small grace period: some employers allow a 2.5-month carryover (through March 15 of the following year) if they have written that option into their plan. This is optional for employers, so not all plans include it. You need to check your specific plan documents or ask your benefits administrator whether your employer offers this grace period.

This rule exists because FSAs are tax-advantaged accounts — the money you put in reduces your taxable income. The trade-off for that tax break is that you cannot keep unused funds.

Key Takeaways

  • Money left in your FSA on December 31 is lost unless your employer's plan includes a grace period extending to March 15.
  • The grace period is optional and varies by employer — you must check your plan documents to know whether you have one.
  • Dependent Care FSAs and Medical FSAs follow the same use-it-or-lose-it rule, though some employers may offer different grace periods for each.
  • Planning your FSA contributions based on realistic spending in the coming year is the only way to avoid forfeiting money.

How the grace period works if your employer offers it

If your plan includes a grace period, you have until March 15 of the following year to spend any remaining balance from the previous year's contribution. For example, if you have $200 left in your Medical FSA on December 31, 2024, and your plan has a grace period, you can use that $200 on medical expenses through March 15, 2025.

The grace period applies only to the previous year's unused balance. Money you contribute in the new year (2025, in this example) is separate and has its own December 31, 2025 deadline. You cannot mix the two or carry forward 2025 money into 2026.

Not all employers offer a grace period, and some employers offer one for Medical FSA but not for Dependent Care FSA. You should receive a summary of your plan's rules during open enrollment or when you enroll in the FSA. If you are unsure, contact your HR or benefits department directly — they can tell you in one conversation whether your specific plan has a grace period and until when.

Why FSAs don't roll over like other accounts

FSAs are tax-advantaged because contributions come out of your paycheck before taxes are calculated. This reduces the income tax you owe. In exchange, the IRS requires that unused funds be forfeited — this is called the "use-it-or-lose-it" rule and is written into the tax code.

The rule is designed to prevent people from accumulating large tax-free balances year after year. If FSAs allowed rollovers, someone could contribute $3,000 a year for 20 years and build up a $60,000 tax-free medical fund, which defeats the purpose of the tax break being tied to current-year spending.

This is different from Health Savings Accounts (HSAs), which do roll over and accumulate. HSAs have stricter rules about who can open one (you must be on a high-deductible health plan), which is why they are allowed to function more like savings accounts.

How to avoid losing FSA money

The most practical approach is to estimate conservatively. Look at what you actually spent on medical or dependent care in the past year, then contribute slightly less than that amount. If you spent $1,500 on copays, prescriptions, and dental work last year, contributing $1,400 to your Medical FSA this year is safer than contributing $2,000.

Keep receipts and track spending throughout the year. Many FSA providers offer a mobile app or online portal where you can see your balance and review what you have spent. Checking in quarterly helps you adjust your spending if you are falling behind.

If you know a large expense is coming — a planned surgery, orthodontic work, or a change in childcare costs — time it to fall within the calendar year if possible. Some expenses like eyeglasses, hearing aids, and over-the-counter medications (with a prescription) count toward FSA spending and may be worth planning for if you are close to your balance.

If you are approaching December and have money left over, you can spend it on may be able to access expenses you might otherwise pay out of pocket: dental cleanings, vision exams, prescription refills, or childcare copays. The IRS publishes a list of may be able to access expenses on its website, and your FSA provider can confirm whether a specific item qualifies.

What happens if you change jobs or lose coverage

If you leave your job or lose FSA coverage mid-year, you can claim the unused balance only if you have a may have access to life event. may have access to events include losing health coverage, a significant change in your dependent care costs, or a change in your family status (marriage, divorce, birth, adoption). Simply changing jobs does not automatically count as a may have access to event.

If you do not have a may have access to event, any unused FSA balance is forfeited when your coverage ends. This is another reason to contribute conservatively — if there is any chance you might change jobs or have a coverage gap, a lower contribution reduces the risk of losing money.

If you move to a new job with a new FSA, the two accounts are separate. Your old FSA balance does not transfer, and you cannot access it. You start fresh with a new contribution election at your new employer.

Dependent Care FSA vs. Medical FSA rollover rules

Both Dependent Care FSAs and Medical FSAs follow the use-it-or-lose-it rule. However, an employer's plan may offer a grace period for one type of FSA but not the other. Some employers offer a grace period for Medical FSA only, while others offer it for both.

The contribution limits are also different: Medical FSA has a higher annual limit (set by the IRS and adjusted yearly), while Dependent Care FSA has a lower limit. As of 2024, the Medical FSA limit is $3,200 per person, and the Dependent Care FSA limit is $5,000 per household (or $2,500 if married filing separately). These limits change annually, so confirm the current year's limits with your benefits administrator.

If you have both types of FSA, treat each one separately when planning your contributions. Do not assume that money from one account can cover the other, and do not assume that a grace period for one applies to both.

Frequently Asked Questions

Can I get my FSA money back as a refund if I don't spend it?

No. Unused FSA money is forfeited and cannot be refunded to you as cash or a paycheck deposit. The only exception is if your employer's plan includes a grace period — then you have extra time to spend the money, but it is still not refunded if you don't use it by the deadline.

What if my employer offers a grace period but I don't know the exact date?

Contact your HR or benefits department and ask for the grace period end date in writing. The standard is March 15, but some employers set different dates. Get confirmation so you know exactly when your deadline is.

Can I transfer my FSA balance to my spouse's FSA?

No. FSA accounts are individual and cannot be transferred between spouses or family members. Each person's FSA is separate, even if you are married and file taxes jointly.

Do I lose my FSA money if I take unpaid leave or go on disability?

If you remain enrolled in your FSA during unpaid leave or disability, your account continues and the use-it-or-lose-it rule still applies. If your coverage ends because you are no longer employed, you forfeit any unused balance unless you have a may have access to life event that allows you to claim it.

What counts as an may be able to access FSA expense I can spend money on before year-end?

may be able to access expenses include copays, coinsurance, deductibles, prescription medications, dental work, vision care, hearing aids, and certain over-the-counter items with a prescription. Your FSA provider's website or customer service can confirm whether a specific item qualifies before you purchase it.