A Flexible Spending Account Lets You Set Aside Pre-Tax Money for Medical and Dependent Care

Yes, a Flexible Spending Account (FSA) uses pre-tax dollars. You contribute money directly from your paycheck before federal income tax, Social Security tax, and Medicare tax are calculated. This means the money you put into an FSA reduces your taxable income for the year, lowering the total taxes you owe.

Your employer deducts your FSA contributions automatically and holds the money in an account you can draw from when you have covered medical expenses or dependent care costs. Because the money never gets taxed in the first place, you pay less to the IRS overall — you're spending pre-tax dollars instead of after-tax dollars on these expenses.

Key Takeaways

  • FSA contributions come out of your paycheck before taxes are withheld, which lowers your taxable income and the amount of federal income tax you owe.
  • You can use FSA funds only for specific medical expenses (like copays, deductibles, and prescriptions) or dependent care (like daycare or after-school programs), depending on which type of FSA you choose.
  • You must decide how much to contribute during your employer's open enrollment period, and most FSAs require you to use the money by the end of the calendar year or lose it.
  • FSAs are only available through your employer's benefits plan — you cannot open one on your own — and you must be actively employed to participate.

How Pre-Tax Contributions Lower Your Tax Bill

When you contribute to an FSA, that money is removed from your gross pay before your employer calculates your income tax withholding. If you earn $50,000 a year and contribute $2,500 to an FSA, your taxable income becomes $47,500. You then pay federal income tax, Social Security tax, and Medicare tax on $47,500 instead of $50,000.

The tax savings depend on your tax bracket. If you're in the 22% federal income tax bracket and contribute $2,500 to an FSA, you save roughly $550 in federal income tax alone. You also save on Social Security and Medicare taxes (combined 7.65%), which adds another $191 in savings. The total benefit is about $741 — money you keep instead of sending to the IRS.

This is different from using after-tax dollars. If you paid for the same $2,500 in medical expenses with money you'd already been taxed on, you would have had to earn more than $2,500 to cover it, because you'd already paid taxes on that income.

What Expenses You Can Pay With FSA Money

Your employer offers one or both types of FSA: a medical FSA or a dependent care FSA. You choose which one to contribute to during open enrollment, and the money can only be used for expenses in that category.

A medical FSA covers out-of-pocket health costs: copays, coinsurance, deductibles, prescription medications, dental work, vision care, hearing aids, and certain medical equipment. It does not cover health insurance premiums themselves or expenses your insurance already pays for. A dependent care FSA covers daycare, preschool, after-school programs, and summer camps for children under 13, as well as adult day care for a dependent you claim on your taxes.

The IRS maintains a detailed list of what qualifies. If you're unsure whether an expense is covered, ask your FSA plan administrator before you spend the money — using FSA funds on ineligible expenses can trigger taxes and penalties.

The Use-It-or-Lose-It Rule and Timing

Most FSAs operate on a calendar year (January 1 through December 31), and you must use the money you contribute by December 31 or forfeit it. Some employers offer a grace period of up to 2.5 months into the following year, or a carryover of up to $610 (the amount changes yearly), but these are optional — your employer decides whether to offer them.

This means you need to estimate carefully how much you'll spend on covered expenses in the next 12 months. If you overestimate and don't use all the money, you lose what's left. If you underestimate, you'll pay for some expenses out of pocket with after-tax dollars. The IRS sets annual contribution limits (currently $3,200 for medical FSAs and $5,000 for dependent care FSAs, though these amounts can change), so you cannot contribute unlimited amounts to make up for a shortfall.

Plan your contribution based on predictable expenses: regular copays, prescriptions you refill monthly, or daycare costs you know you'll have. Avoid contributing for one-time or uncertain expenses.

How to Access Your FSA Funds

When you have a covered expense, you submit a claim to your FSA plan administrator with a receipt or explanation of benefits from your provider. Some employers issue an FSA debit card that you can use directly at pharmacies, doctor's offices, or daycare providers — the card automatically deducts from your FSA balance. Other plans require you to pay out of pocket and then request reimbursement by mail or online portal.

Reimbursement typically takes one to two weeks after the administrator receives and approves your claim. Keep all receipts and documentation for at least three years in case the IRS audits your account. Your FSA administrator can also tell you your current balance and remaining contribution room at any time.

Who Can Open an FSA and When

You can only open an FSA through your employer's benefits plan — you cannot open one independently or through the marketplace. You must be a current employee to participate, and you enroll during your company's open enrollment period, which is usually once a year in the fall for benefits that start January 1.

If you have a may have access to life event (birth of a child, marriage, loss of other health coverage, change in dependent care needs), you may be able to enroll or change your contribution amount outside of open enrollment. Your HR or benefits department can tell you whether your situation qualifies and what documentation you need to provide.

If you leave your job, your FSA coverage ends. You cannot take the account with you, and you have a limited window (usually 60 days) to submit claims for expenses you incurred while employed. Any unused balance is forfeited to your employer.

FSA Limits and How They Compare to Other Pre-Tax Accounts

The IRS sets annual contribution limits for FSAs. For 2024, the medical FSA limit is $3,200 and the dependent care FSA limit is $5,000 (or $2,500 if you're married filing separately). These limits change periodically, so check with your plan administrator each year.

FSAs are different from Health Savings Accounts (HSAs), which are also pre-tax but have higher limits and let you carry money over year to year. HSAs require you to be enrolled in a high-deductible health plan, while FSAs work with any health insurance. FSAs are also different from Commuter Benefits accounts, which use pre-tax dollars for transit and parking but have separate contribution limits and rules.

If your employer offers multiple pre-tax accounts, you can usually contribute to more than one in the same year — for example, a medical FSA and a dependent care FSA, or an FSA and an HSA — as long as you don't exceed the individual limits for each.

Frequently Asked Questions

Can I use my FSA for my spouse's medical expenses?

Yes, if your spouse is your dependent on your tax return. You can use your FSA to pay for your spouse's copays, prescriptions, and other covered medical expenses. The money must come from your FSA account, not your spouse's — only one of you can have an FSA through your employer.

What happens to my FSA money if I quit my job mid-year?

Your FSA coverage ends on your last day of employment. You have a limited window (usually 60 days) to submit claims for expenses you incurred while you were employed. Any money you contributed but did not use is forfeited — you cannot transfer it to a new job or take it with you.

Can I change my FSA contribution amount during the year?

Only if you have a may have access to life event, such as birth of a child, marriage, divorce, loss of other health coverage, or a significant change in dependent care costs. Routine changes happen during open enrollment. Contact your HR department to learn about your situation qualifies.

Is FSA money taxed when I withdraw it?

No. Because you contributed pre-tax dollars, the money you withdraw is not taxed again. You only pay taxes if you use FSA funds for an ineligible expense — in that case, the IRS treats it as taxable income and may assess a penalty.

Can I use my FSA for over-the-counter medications?

Yes, but only if you have a prescription from your doctor. Over-the-counter medications like pain relievers or cold medicine are covered only with a written prescription — a doctor's verbal recommendation is not enough. Vitamins and supplements are generally not covered unless prescribed for a specific medical condition.