An FSA and an HSA are separate accounts with different rules

No. A Flexible Spending Account (FSA) and a Health Savings Account (HSA) are two different types of accounts, even though both let you set aside pre-tax money for medical expenses. The confusion is understandable—they serve similar purposes—but they have different may be able to access rules, contribution limits, withdrawal rules, and what happens to unused money at the end of the year.

The key difference: an HSA is yours to keep and grow indefinitely, while an FSA is tied to your job and has a "use it or lose it" rule. You cannot have both accounts at the same time if you want the tax benefits, though some employers offer both and let you choose one.

Key Takeaways

  • An FSA is employer-sponsored and money left unspent at year-end is forfeited, while an HSA is portable, belongs to you, and rolls over indefinitely.
  • You must be enrolled in a high-deductible health plan (HDHP) to open an HSA, but FSAs work with any health insurance plan.
  • FSA contribution limits are set by your employer (usually $3,200 to $3,300 per year), while HSA limits are set by federal law and are higher.
  • You cannot claim the tax deduction for both an FSA and an HSA in the same year for the same expenses.

How FSAs and HSAs differ in ownership and portability

An FSA belongs to your employer, not to you. The money in it is available only while you work there and are enrolled in the plan. If you leave your job, you lose access to the account and any unspent balance—with rare exceptions for COBRA continuation coverage. You cannot take the FSA with you or transfer it to a new employer's plan.

An HSA belongs to you. You open it through a bank or financial institution, and you own it outright. If you change jobs, move to a different health plan, or retire, the account stays yours. You can keep contributing to it as long as you remain enrolled in an HDHP, and the money inside can grow tax-free indefinitely. This portability is one of the biggest practical differences between the two accounts.

The "use it or lose it" rule and what it means for your money

FSAs have a strict use-it-or-lose-it rule. Money you contribute but do not spend by December 31 is forfeited—your employer keeps it. Some employers offer a grace period (usually 2.5 months into the next year) or a carryover of up to $610 (this amount changes yearly), but most do not. This forces you to estimate carefully how much medical expense you will have in the coming year.

HSAs have no use-it-or-lose-it rule. Money you do not spend stays in the account and earns interest or investment returns. You can withdraw it whenever you need it, and there is no deadline to use it. This makes HSAs function more like a savings account than a spending account, and it is one reason financial advisors often recommend maxing out HSA contributions if you can afford to.

may be able to access: who can open each type of account

To open an HSA, you must be enrolled in a high-deductible health plan (HDHP). Your employer or your insurance company defines what qualifies as an HDHP based on federal minimum deductible amounts. If your plan does not meet those thresholds, you cannot open an HSA, even if you want to.

FSAs have no insurance plan requirement. You can have an FSA with any health insurance—an HMO, a PPO, a low-deductible plan, or even no health insurance at all (though that is rare). This makes FSAs available to more people, but it also means they are always employer-sponsored. You cannot open an FSA on your own; your employer must offer one.

If your employer offers both an FSA and an HSA, you must choose one. You cannot contribute to both in the same year and claim the tax deduction for both. However, if you have an HSA from a previous job, you can keep it and contribute to it even if your new employer offers only an FSA.

Contribution limits and who sets them

FSA contribution limits are set by your employer, within IRS guidelines. Most employers cap FSA contributions between $3,200 and $3,300 per year for individual coverage. Some employers set lower limits. You choose how much to contribute during your employer's open enrollment period, and that amount is deducted from your paycheck in equal installments throughout the year.

HSA contribution limits are set by federal law and are higher than FSA limits. For 2024, the limit is $4,150 for individual coverage and $8,300 for family coverage (these amounts change annually). You can contribute through payroll deductions, direct deposits, or by making contributions yourself and deducting them on your tax return. If you are 55 or older, you can contribute an additional $1,000 per year.

What medical expenses each account covers

Both FSAs and HSAs cover the same types of may have access to medical expenses: copays, coinsurance, deductibles, prescription medications, dental work, vision care, mental health treatment, and many over-the-counter items (with a doctor's prescription). The IRS maintains a detailed list of what counts as a may have access to expense.

The practical difference is in how you use the money. With an FSA, you typically spend the money during the year it is contributed because of the use-it-or-lose-it rule. With an HSA, you can let the money accumulate and use it years later, or even use it for non-medical expenses after age 65 (though non-medical withdrawals are taxed as income).

Tax treatment and what you save

Both FSAs and HSAs reduce your taxable income. Money you contribute is taken out before federal income tax, Social Security tax, and Medicare tax are calculated. This means you pay less in taxes overall. The exact tax savings depends on your tax bracket, but for most people, contributing to either account saves 20 to 40 percent of the contribution amount in taxes.

The difference is in growth and long-term value. HSA money can be invested and grow tax-free, and you pay no tax on withdrawals for may have access to medical expenses. FSA money typically sits in a low-interest account and is spent within the year. Over time, an HSA can accumulate significantly more value, especially if you do not need to withdraw the money immediately.

Frequently Asked Questions

Can I have both an FSA and an HSA at the same time?

You cannot contribute to both and claim the tax deduction for both in the same year. However, if you have an HSA from a previous job, you can keep it while contributing to your new employer's FSA. You would just claim the FSA deduction, not the HSA deduction, for that year.

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

You lose access to the FSA immediately. Any unspent balance is forfeited to your employer. The only exception is if you are may be able to access for COBRA continuation coverage, which may allow you to continue the FSA for a limited time, though you must pay the full premium yourself.

Can I use my HSA to pay for my spouse's medical expenses?

Yes. HSA funds can be used for may have access to medical expenses of you, your spouse, and your dependents, regardless of whether they are covered under your health plan. FSA rules are the same—you can use FSA money for family members' medical expenses.

What if I contribute too much to my FSA and do not spend it all?

The unspent amount is forfeited, with two exceptions: your employer may offer a grace period (usually 2.5 months into the next year) or allow a carryover of up to $610 (adjusted annually). Check your plan documents to see which option your employer offers. If neither applies, the money is lost.

Can I withdraw HSA money for non-medical expenses?

Yes, but with a tax penalty. Before age 65, withdrawals for non-medical expenses are subject to income tax plus a 20 percent penalty. After age 65, you can withdraw money for any reason and pay only income tax (no penalty), though withdrawals for non-medical expenses are taxed as ordinary income.