FSA accounts do not roll over — you lose any money you don't spend by the end of the plan year

The money in your Flexible Spending Account follows a "use it or lose it" rule. Whatever balance remains on December 31st (or your plan year's final date) goes back to your employer. You cannot carry it forward to the next year, and you cannot withdraw it as cash or move it to a savings account.

This rule exists because FSAs are funded with pre-tax dollars. The IRS treats unspent money as a forfeiture — once the plan year ends, that account is closed and the funds are gone. There is no exception for medical expenses you plan to have later, and no way to get the money back after the deadline passes.

The only partial exception is the grace period, which some employers offer. A grace period gives you an extra 2.5 months after the plan year ends to spend down your remaining balance. Not all employers provide this, so you need to check your plan documents to know whether yours does.

Key Takeaways

  • Any FSA money left unspent at the end of your plan year is forfeited to your employer — there is no rollover option.
  • A grace period, if your employer offers one, extends your spending window by up to 2.5 months into the next calendar year.
  • You can change your FSA contribution amount during open enrollment or after a may have access to life event, which helps you avoid overfunding in future years.
  • Unused FSA funds cannot be transferred to a Health Savings Account, a spouse's account, or any other account type.

How the grace period works if your employer offers it

A grace period is optional, and employers decide whether to include it in their plan. If yours does, it typically runs through March 15th of the following year, though some employers set it to end earlier. During this window, you can continue to submit claims for expenses you incurred during the grace period itself — not for expenses from the previous plan year.

The grace period does not extend your ability to spend money from the old plan year. It is a separate spending window for new expenses. For example, if your plan year ends December 31st and your grace period runs through March 15th, you can submit claims for medical expenses you had in January, February, or March. But you cannot use old plan year funds to pay for them.

Check your employer's benefits summary or call your plan administrator to find out whether a grace period applies to your account. If it does, you should know the exact end date so you do not miss the deadline.

Why the use-it-or-lose-it rule exists

The IRS created this rule to prevent people from using FSAs as long-term savings accounts. Because FSA contributions come from pre-tax income, allowing unlimited carryover would let workers accumulate large tax-free medical reserves indefinitely. The forfeiture rule keeps FSAs functioning as annual spending accounts rather than investment vehicles.

This is also why FSAs are separate from Health Savings Accounts (HSAs), which do allow unlimited rollover. HSAs have stricter rules about what you can spend on and higher deductibles, but they give you the flexibility to save year to year. If you have access to an HSA through a high-deductible health plan, it may be a better choice than an FSA if you want to carry money forward.

Strategies to avoid losing FSA money

The most reliable approach is to estimate your medical spending carefully before you commit to a contribution amount. Look at the past year's receipts for copays, prescriptions, dental work, and vision care. Add in any planned procedures or recurring expenses you know are coming. Be conservative — it is better to contribute less and have money left over in your regular paycheck than to forfeit FSA funds.

If you have already contributed and realize you will not spend it all, you can still make purchases before the deadline. Stock up on over-the-counter items that count as FSA-may be able to access expenses: pain relievers, allergy medications, first-aid supplies, and certain medical devices. You can also schedule dental cleanings, eye exams, or other routine care before year-end if you have the balance to cover them.

During open enrollment, adjust your contribution for the next year based on what you actually spent. If you forfeited money this year, lower your election. If you ran short, increase it slightly. This annual recalibration is the best way to minimize waste over time.

What happens to forfeited FSA money

When your plan year ends and you have unspent funds, the money does not disappear into a void — it goes back to your employer. Employers can use forfeited FSA funds to pay plan administration costs, such as the fees charged by the FSA custodian or the cost of running the program. Some employers use the money to reduce premiums for all employees in the next year.

You do not receive a refund, a tax deduction, or any other compensation for the forfeited amount. It is simply gone from your account. This is why it is critical to spend down your balance before the deadline or take advantage of a grace period if one exists.

Changing your FSA contribution after forfeiture

If you lost money because you overestimated your spending, you can adjust your election during the next open enrollment period. Open enrollment typically happens once a year, usually in the fall, and lets you change your FSA contribution for the following plan year.

You can also make changes outside of open enrollment if you experience a may have access to life event: marriage, divorce, birth or adoption of a child, loss of other health coverage, or a significant change in your spouse's benefits. These events give you a limited window — usually 30 to 60 days — to modify your FSA election mid-year.

Keep records of what you spent and what you forfeited so you have concrete numbers to work with when you adjust your contribution next time.

Frequently Asked Questions

Can I move my FSA balance to an HSA?

No. FSA and HSA funds are separate and cannot be transferred between accounts. However, you can have both accounts if you are enrolled in a high-deductible health plan. You would need to stop contributing to your FSA and redirect that money to your HSA instead, but existing FSA balances cannot be moved.

What if I leave my job before the plan year ends?

You lose access to your FSA when you leave your employer, and any remaining balance is forfeited. Some plans allow you to submit claims for expenses you incurred before your departure, but you cannot carry the balance to a new job or convert it to cash. Check with your former employer's benefits department about the claims deadline.

Does my spouse's FSA balance roll over to mine?

No. Each person's FSA is separate, and balances cannot be combined or transferred between spouses. If you are both enrolled in FSAs, each account follows its own use-it-or-lose-it deadline. You each need to manage your own spending and contribution amounts.

Can I claim FSA expenses on my taxes if I don't spend the money?

No. If you forfeit FSA funds, you cannot deduct those expenses on your tax return. The tax benefit only applies to money you actually spent during the plan year. Forfeited funds receive no tax treatment — they are simply lost.

Is there any way to get my forfeited FSA money back?

No. Once the plan year ends and the deadline passes, there is no process to recover forfeited funds. Some employers may offer a grace period that extends your spending window, but that is the only exception to the use-it-or-lose-it rule. Plan carefully and spend before the deadline to avoid this outcome.