HSA vs. FSA: 2026 Contribution Limits and Key Differences

Health savings accounts (HSAs) and flexible spending accounts (FSAs) both let you save and pay for qualified medical expenses using pre-tax dollars. But HSAs, which require enrollment in a high-deductible healthcare plan (HDHP), let you roll over your balance from year to year and job to job, while employer-sponsored FSAs largely follow “use-it-or-lose-it” rules that apply to calendar years and changes in employment status.  

In this guide, learn the other key differences between an HSA vs. FSA, including contribution limits, tax advantages, investment options, rollover rules and how to choose which account is best for you.

MoneyLion offers a service to help you find personal loan offers. Based on the information you provide, you can get matched with offers for up to $100,000 from our top providers. You can compare rates, terms and fees from different lenders and choose the best offer for you.

Key Takeaways

• When comparing an HSA vs. FSA, the biggest difference to note is what happens to unused money. HSA balances roll over indefinitely and stay with you between jobs, while most FSA funds follow use-it-or-lose-it rules tied to your employer.

• An HSA requires a high-deductible health plan, but an FSA doesn't. For 2026, a qualifying HDHP needs at least a $1,700 individual or $3,400 family deductible, and Bronze and Catastrophic Affordable Care Act (ACA) plans now qualify too.

• HSAs let you save far more and invest the balance. The 2026 HSA limit is $4,400 for individuals and $8,750 for families, versus $3,400 for an FSA.

• An HSA offers a triple tax advantage that an FSA can't match. Contributions, growth and qualified withdrawals can all be tax-free, and after age 65 you can use the funds for any purpose without the 20% penalty.

• Choose based on eligibility and how you'll use the money. An FSA fits predictable annual expenses, while an HSA rewards those who can leave the balance to grow for the long term.

Summary generated by AI, verified by MoneyLion editors

HSA vs. FSA at a Glance

What Is an HSA?

An HSA is a tax-advantaged account you can open to cover eligible medical expenses so long as you have an HDHP, no other healthcare coverage — with a few exceptions — and don’t appear as a dependent on someone else’s tax return. HSAs:

• Require an HDHP that meets the annual IRS deductible and out-of-pocket limits 

• Allow unused funds to roll over indefinitely

• Can be invested for potential long-term growth

• Can be used as a retirement savings vehicle after age 65

• Have higher contribution limits than FSAs

• May receive employer contributions

• Don't expire if you leave your job

• Offer a triple tax advantage: contributions, qualified withdrawals and investment earnings may be tax-free

What Is an FSA?

An FSA is a tax-advantaged savings account that an employer may offer and set up on your behalf to cover eligible medical expenses. FSAs:

• Don't require enrollment in an HDHP

• Usually require you to use your funds within the plan year

• Can't be invested for long-term growth

• Have lower contribution limits than HSAs

• May receive employer contributions as a flat amount or percentage match

• Allow upfront access to your full elected annual contributions 

• Usually expire if you leave your job

• Help reduce your taxable income through pre-tax contributions and qualified withdrawals 

2026 Contribution Limits

The IRS sets annual contribution limits for HSAs and FSAs and typically adjusts them each year for inflation. This chart spells out contribution limits as of calendar year 2026.

HSA or FSA — Which Fits Your Situation?

It’s important to note that you can’t open an HSA unless you have a qualified HDHP. As of calendar year 2026, the IRS defines this as the following:

• It has an annual deductible of at least $1,700 for individuals and $3,400 for families.

• Annual out-of-pocket expenses — excluding premiums — can’t exceed $8,500 for individuals or $17,000 for families. 

• Bronze and Catastrophic plans purchased through the ACA exchanges all now qualify as HDHPs.

With that big caveat in mind, this quick-decision checklist can help you determine whether an HSA vs. FSA is the better fit. 

Choose an HSA If

• You’re enrolled in an HDHP. 

• You want to build a long-term healthcare savings fund. 

• You can cover out-of-pocket medical expenses while the fund grows. 

• You'd like to invest some healthcare savings for potential tax-free growth.

• You don’t want to worry about losing unused funds at the end of the year. 

• You don’t want to worry about losing unused funds if you change jobs. 

Choose an FSA If

• You don’t have an HDHP or are otherwise ineligible for an HSA.

• You know you'll spend most or all of the money you contribute each year.

• You prefer lower deductibles and more predictable health insurance costs.

• You want immediate access to your annual election, a benefit of most FSAs.

• Your employer offers other generous FSA benefits, like matching contributions or rollovers.

• You don't plan to invest your healthcare savings or prefer not to manage another long-term investment account.

Can You Have an HSA and an FSA at the Same Time?

You usually can't contribute to an HSA and a general-purpose healthcare FSA at the same time because access to an FSA generally makes you ineligible for an HSA under IRS rules.

You can, however, do the following:

• Contribute to an HSA and a limited-purpose FSA, which lets you put tax-deferred dollars toward eligible vision and dental care expenses for you, your spouse or eligible dependents.

• Pair an HSA with a dependent care FSA, which is a tax-advantaged account you can use to pay for certain day care or elder care services. 

• Have your spouse open a limited-purpose FSA or a post-deductible FSA if you have an HSA. Post-deductible FSAs are effectively limited-purpose FSAs that convert to a general-purpose FSA once you meet your healthcare plan’s minimum annual deductible.

What Happens to Your Money If You Switch Jobs?

Generally speaking, you keep your HSA when you change jobs or retire, while healthcare FSAs are typically employer-sponsored benefits that may end when your employment does. This chart illustrates what happens to your HSA and FSA funds if you switch jobs for a variety of reasons. 

Can You Invest HSA Money for Retirement?

Most HSA providers let you invest your savings in mutual funds, exchange-traded funds (ETFs) or other investments once you meet a minimum balance requirement.

• These investments can grow tax-free.

• Once you reach age 65, you can withdraw and use them for any expense, without a penalty, though non-medical withdrawals are subject to ordinary income tax. 

These advantages, coupled with the fact that HSA funds roll over indefinitely, mean HSAs can serve as a supplemental retirement savings vehicle, particularly for people who can afford to pay some medical expenses out of pocket and allow their balances to grow over time.

FSAs, by contrast, don't offer investment options and are designed primarily to help you reduce your taxable income while saving and paying for eligible healthcare expenses during the current plan year.

What Can You Buy With This Money? 

Commonly qualified HSA and FSA expenses may include:

• Doctor visits, including deductibles, copays and coinsurance 

• Hospital care, including deductibles, copays and coinsurance

• Prescription drugs

• Over-the-counter medications, including pain relievers, antacids and allergy pills

• Menstrual care products

• Nutritional counseling or weight-loss programs to treat obesity-related illnesses

• Prescription food or beverages

• Eye and dental exams

• Therapy for diagnosed mental illnesses

• Treatment for substance use disorders, including alcohol, drug and smoking cessation programs

Commonly disqualified HSA and FSA expenses may include: 

• Cosmetic surgery or other elective procedures, like teeth whitening

• Gym memberships or fitness programs for general wellness

• Vitamins and dietary supplements for general wellness

• Everyday personal hygiene items, like toothpaste, toiletries or cosmetics

• Monthly health insurance premiums, with exceptions for Medicare, COBRA or long-term care insurance 

Bottom Line

• HSAs and FSAs are tax-advantaged accounts that help you save and pay for qualified medical expenses while lowering your taxable income.

• HSAs require a qualifying HDHP, let unused funds roll over from year to year and stay with you if you change jobs.

• FSAs are employer-sponsored benefits that generally follow annual "use-it-or-lose-it" rules and typically end when your employment does.

• Many HSAs let you invest your balance, allowing any earnings to grow tax-free and making them a potential supplemental retirement savings vehicle.

• Choosing between the two comes down to eligibility, expected healthcare expenses and whether you're looking for short-term flexibility or long-term savings potential.

👉Up Next: Medical Loans: What You Should Know Before Borrowing

FAQs

Do I need a high-deductible health plan to have an HSA?

Yes, you need an HDHP to open and contribute to an HSA. That means you must have an ACA Bronze plan, catastrophic plan or a plan that meets the IRS’ defined HDHP limits:

• An annual deductible of at least $1,700 for individuals and $3,400 for families.

• Annual out-of-pocket expenses that don’t exceed $8,500 for individuals or $17,000 for families.

Are HSA and FSA contributions tax-deductible?

HSA and FSA contributions generally reduce your taxable income. HSA contributions are typically tax-deductible — or excluded from taxable income if made through payroll — while FSA contributions are generally made with pre-tax dollars through payroll deductions. Withdrawals from either account are tax-free when used for qualified medical expenses.

Does FSA money roll over or is it use-it-or-lose-it? 

FSA money is generally “use-it-or-lose-it,” and the funds don't roll over from year to year. However, some employers offer either a short spending grace period of two-and-a-half months or allow you to carry over up to $680 of unused funds.

Can my spouse have their own FSA if I already have an HSA? 

Your spouse can have their own FSA if you already have an HSA, but only if the FSA doesn't make you ineligible for HSA contributions. For example, a limited-purpose FSA, which covers eligible dental and vision expenses, or a post-deductible FSA, which reimburses qualified medical expenses only after you've met your HDHP's annual deductible, generally won't affect your HSA eligibility.

Is an HSA worth it for retirement savings? 

An HSA can be a valuable supplemental retirement savings account because unused funds roll over indefinitely and many providers let you invest your balance, allowing any earnings to grow tax-free. Plus, after age 65, you can withdraw HSA funds for any purpose without paying the 20% early withdrawal penalty, although non-medical withdrawals are subject to ordinary income tax.

What happens to my FSA if I get laid off?

If you get laid off, you’ll generally lose the remaining funds in your FSA account on the same day your employment ends. However, some employers offer grace or “runout” periods, usually between 15 and 90 days, during which you can spend the unused funds. You also may be able to extend your FSA if you opt for COBRA coverage. 

Key Terms

• HSA: A tax-advantaged account paired with a high-deductible health plan that lets you save pre-tax dollars for medical costs. Unused funds roll over indefinitely and stay with you if you change jobs.

• FSA: An employer-sponsored account for paying qualified medical expenses with pre-tax dollars. Most funds must be used within the plan year, aside from a limited carryover or grace period.

• HDHP: A health plan that meets IRS deductible and out-of-pocket limits and is required to open an HSA. For 2026, that means at least a $1,700 individual or $3,400 family deductible.

• Triple tax advantage: The HSA benefit where contributions, investment growth and qualified withdrawals can all avoid federal tax. No other common account offers all three.

• Carryover: The limited amount of unused FSA money your plan may let you roll into the next year — up to $680 for 2026 if your employer permits it.

• Limited-purpose FSA: An FSA restricted to dental and vision costs that you can pair with an HSA without losing HSA eligibility.

• Catch-up contribution: An extra $1,000 that HSA holders age 55 or older can contribute on top of the annual limit.

Summary generated by AI, verified by MoneyLion editors

Sources

• IRS. 2026. "Publication 969 (2025), Health Savings Accounts and Other Tax-Favored Health Plans."

• IRS. 2026. "Expanded Availability of Health Savings Accounts under the One, Big, Beautiful Bill Act (OBBBA)."

• MetLife. 2026. "Does My FSA Roll Over Each Year?"

• IRS. 2025. "Employer’s Tax Guide to Fringe Benefits."

Data is accurate as of July 20, 2026, and is subject to change.

Photo credit: DNY59 / iStock