Most health spending accounts do not roll over, but the rules depend on which account you have

Health Savings Accounts (HSAs) roll over completely. Any money you don't spend in a year stays in your account and carries forward indefinitely. You can use it next year, in five years, or in retirement.

Flexible Spending Accounts (FSAs) do not roll over. Money left unspent at the end of the plan year is forfeited—you lose it. Your employer may allow a small carryover (up to $640 in 2024, though this amount changes yearly) or a grace period (up to 2.5 months into the next year to spend the prior year's funds), but only if they have chosen to offer one. Most do not.

Dependent Care FSAs follow the same forfeiture rule as health FSAs, with the same optional carryover and grace period limits.

The difference matters because it changes how you should spend the money. With an HSA, you can be conservative and let money accumulate. With an FSA, you need to estimate carefully or risk losing what you don't use.

Key Takeaways

  • HSA balances roll over automatically and indefinitely—unspent money is always yours to use later.
  • FSA balances are forfeited at the end of the plan year unless your employer offers a carryover or grace period, which most do not.
  • The carryover limit, if offered, is $640 per year (as of 2024), and grace periods extend spending into the next 2.5 months.
  • You should spend down FSA funds before year-end or confirm your employer's carryover policy to avoid losing money.

How HSA rollovers work

An HSA is your personal account. The money belongs to you, not your employer, and it stays with you even if you change jobs or retire. There is no "use it or lose it" rule. If you contribute $3,000 in 2024 and spend $1,200, the remaining $1,800 sits in your account and earns interest or investment returns (depending on how your HSA is invested). You can withdraw it whenever you need it, for any may have access to medical expense.

This makes HSAs powerful for long-term health savings. Many people use them as a supplemental retirement account: they contribute the maximum allowed, pay medical expenses out of pocket, and let the HSA grow untouched. At retirement, they can withdraw the accumulated balance tax-free for medical costs, or withdraw it for any reason (though non-medical withdrawals are taxed like regular income).

The only limit is that you must be enrolled in a high-deductible health plan (HDHP) to contribute to an HSA. If you switch to a regular health plan, you can no longer add money, but the balance you already have remains yours and continues to roll over.

How FSA forfeiture works and what employers can offer

An FSA is funded by pre-tax payroll deductions from your paycheck. The money is held in a separate account, but it is not legally yours the way an HSA is—it belongs to the plan. At the end of the plan year (usually December 31), any balance you have not spent is forfeited. This is called the "use it or lose it" rule, and it is set by federal law.

However, employers can soften this rule in two ways. First, they can offer a carryover: up to $640 (in 2024) of unspent FSA funds can roll into the next year. Second, they can offer a grace period: you get an extra 2.5 months (usually through March 15) to spend the prior year's remaining balance. Some employers offer both, some offer one, and many offer neither. You need to check your plan documents or ask your HR department which applies to you.

If your employer offers a carryover, you can carry over up to $640 but must forfeit anything above that. If they offer a grace period, you can spend 2024 money through mid-March 2025, but any balance still remaining after the grace period ends is lost. The carryover and grace period are separate options—you do not get both applied to the same balance.

Dependent Care FSA rollovers follow the same forfeiture rule

Dependent Care FSAs (used to pay for childcare or adult daycare) operate under the same use-it-or-lose-it structure as health FSAs. Money left unspent at year-end is forfeited unless your employer offers a carryover or grace period. The carryover limit is also $640 per year.

The main difference is the type of expense: Dependent Care FSAs cover only childcare, preschool, daycare, or care for an adult dependent so you can work. They do not cover medical expenses. But the rollover rules are identical to health FSAs.

How to estimate FSA spending to avoid forfeiture

Because FSA money is forfeited if unused, you need to estimate your medical and dependent care costs carefully at the start of the year. Look at the prior year: how much did you spend on copays, deductibles, prescriptions, dental work, vision care, or childcare? Add a small buffer for unexpected costs, but do not over-contribute hoping to use it all.

Common FSA-may be able to access expenses include copays, coinsurance, deductibles, prescription drugs, dental work, vision care, hearing aids, and certain over-the-counter items (like pain relievers or allergy medicine—though the rules changed in 2020 and vary by plan). Childcare FSAs cover daycare, preschool, summer camps, and in-home care.

If you realize mid-year that you will not spend your full FSA balance, you have limited options. You cannot reduce your contribution mid-year unless you have a may have access to life event (marriage, birth, job loss, major change in childcare costs). If you are near year-end and have unspent funds, spend them on may be able to access expenses you were planning to pay out of pocket anyway—dental cleanings, eye exams, prescription refills—before the deadline.

What happens to FSA money if you leave your job

If you leave your job mid-year, you lose access to your FSA balance immediately. You do not get to keep the money or carry it to your next employer's plan. This is one of the biggest differences from an HSA: FSA funds are tied to your employer's plan, not to you personally.

However, you may be able to continue your FSA coverage through COBRA (Consolidated Omnibus Budget Reconciliation Act), which allows you to keep the same health and FSA plans for up to 18 months after leaving your job. You would pay the full premium plus an administrative fee, but you could continue spending down your FSA balance. Not all employers offer COBRA, and it is expensive, so most people do not use it for FSA purposes alone.

If you do not elect COBRA, your FSA ends when your employment ends. Any unspent balance is forfeited, regardless of how much you contributed.

HSA vs. FSA: which rollover rules matter most

If you have a choice between an HSA and an FSA (some employers offer both), the rollover rules are one factor to consider. An HSA is more flexible because money rolls over indefinitely and belongs to you. An FSA forces you to spend or lose money each year, which requires more careful planning.

However, FSAs often have lower contribution limits than HSAs, and some employers contribute to FSAs on behalf of employees (which is rare for HSAs). The tax savings from both accounts are similar. The right choice depends on your health costs, job stability, and comfort with estimating expenses.

If you have both an HSA and an FSA, note that you cannot use both to pay for the same expense. You must choose which account to draw from. Many people use the FSA first to avoid forfeiture, then use the HSA for remaining costs.

Frequently Asked Questions

Can I roll over FSA money to an HSA?

No. FSA and HSA are separate accounts with separate rules. Unspent FSA money is forfeited at year-end (unless your employer offers carryover or grace period). You cannot transfer it to an HSA or any other account. However, you can contribute to an HSA in the same year you have an FSA, as long as you are enrolled in an HDHP.

What if my employer offers both carryover and grace period?

You get both. You can carry over up to $640 to next year, and you have until mid-March to spend the remaining balance from the prior year. Anything left after the grace period ends is forfeited. Check your plan documents to confirm the exact grace period end date, as it varies by employer.

Do HSA balances expire if I don't use them?

No. HSA balances never expire. You can let money sit in your account for decades and withdraw it whenever you need it for a may have access to medical expense. Even in retirement, the balance remains yours and can be used tax-free for medical costs.

What counts as a may have access to medical expense for FSA or HSA?

may have access to expenses include copays, coinsurance, deductibles, prescription drugs, dental work, vision care, hearing aids, and certain over-the-counter medications. Expenses like gym memberships, cosmetic procedures, or general wellness products do not count. Your plan documents list the full rules, and the IRS website has a detailed guide to may have access to expenses.

Can I get my forfeited FSA money back?

No. Once the plan year ends and the grace period (if offered) expires, forfeited FSA money is gone. It goes back to your employer or the plan administrator. There is no way to recover it. This is why tracking your FSA balance and spending it down before year-end is important.