You’re scrolling through your annual open enrollment packet, and three acronyms appear next to your health plan selections: FSA, HRA, HSA. You recognize at least one, but you can’t remember which account your employer funds, which you can take with you if you quit, and which forces you to forfeit unspent funds at the end of the year. This breakdown clarifies the core purpose and rules of each account so you can select the option that matches your medical spending habits and employment plans.
Two options people mix up
FSAs and HSAs are the two accounts most frequently confused by benefits enrollees, because both allow you to set aside pre-tax money for eligible medical costs. But their eligibility rules and ownership structures are fundamentally different, and mixing them up can lead to missed savings or unexpected tax penalties. FSAs are offered by employers and are available to nearly any employee with a company-sponsored health plan, regardless of the plan’s deductible size. HSAs, by contrast, are only available to people enrolled in a qualifying high-deductible health plan (HDHP) that meets federal eligibility requirements, and you cannot be claimed as a dependent on another person’s tax return to contribute. Another key difference that trips people up: FSAs are owned by your employer, while HSAs are owned entirely by you, even if your employer adds matching or seed funds to your account.
Comparison table
| Account Feature | FSA (Flexible Spending Account) | HRA (Health Reimbursement Arrangement) | HSA (Health Savings Account) |
|---|---|---|---|
| Eligibility | Offered exclusively by employers; no specific health plan requirement to participate | Offered exclusively by employers; eligibility and covered costs set by your employer plan | Requires enrollment in a qualifying high-deductible health plan (HDHP), no disqualifying additional health coverage, and not claimed as a dependent on another person’s tax return |
| Who contributes funds | Primarily employee pre-tax contributions; some employers add supplementary funds | Only employer contributions allowed; no employee contributions permitted | Employees, employers, or third parties (e.g., family members) can contribute pre or post-tax (post-tax contributions are tax-deductible when you file your return) |
| Account ownership | Owned by your employer | Owned by your employer | Owned entirely by you for life |
| Portability if you leave your job | No; you lose access to remaining funds unless you elect COBRA coverage for the plan | No; you lose access to remaining funds when you leave your job unless your plan explicitly allows limited rollovers for qualified events | Yes; you keep the account and all funds when switching jobs, retiring, or leaving the workforce |
| “Use it or lose it” rule | Most plans require full spending by the end of the plan year; some allow a $500 rollover or 2.5 month grace period, confirm with your plan documents | Unspent funds expire at the end of the plan year or when you leave your job, per your employer’s plan rules | No expiration; all unspent funds roll over indefinitely year after year |
| Eligible expenses | Most IRS-qualified medical, dental, vision, over-the-counter medication, and menstrual care costs; confirm allowed expenses with your plan administrator | Eligible expenses are set entirely by your employer; review your Summary of Benefits for a full list | All IRS-qualified medical, dental, vision, over-the-counter medication, and menstrual care costs; after age 65, you can withdraw funds for non-medical use with no penalty (only regular income tax applies) |
| Can invest funds for growth | No; all funds stay in a non-interest-bearing or low-yield cash account | No; all funds stay in a cash account set up by your employer | Yes; most HSA providers allow you to invest funds in mutual funds, ETFs, and other investment vehicles once you meet a minimum balance threshold |
Illustrative example
Illustrative example: A 34-year-old single employee has a qualifying HDHP with a $2,000 annual deductible, and their employer offers all three account options as part of open enrollment. They spend roughly $1,300 a year on prescription contact lenses, dental fillings, and over-the-counter allergy medication, with no planned major medical procedures in the coming year. If they contribute $1,300 to a health FSA: They avoid paying income and payroll tax on that $1,300, reducing their annual tax bill by roughly $300 to $400 depending on their tax bracket. If they only spend $1,000 of the funds by the end of the plan year, they forfeit the remaining $300 unless their plan has an allowed rollover or grace period. If their employer offers a $1,500 HRA: They do not contribute any of their own money to the account, and they can use the funds for eligible costs as outlined in their plan. If they leave their job for a new role 8 months into the plan year, they lose access to any remaining HRA funds. If they contribute $1,300 to an HSA: They get the same pre-tax savings as the FSA, can use the funds for all the same eligible medical costs, and any unspent funds roll over to the next year, even if they switch jobs. If they do not need the funds for near-term medical costs, they can invest the balance to grow tax-free for retirement medical expenses.
Limits and exceptions
While the table above covers core rules, there are common limits and exceptions that can impact which account you are eligible to use. First, annual contribution limits for both FSAs and HSAs are updated each year by the IRS, so check the latest guidelines or ask your benefits administrator for the current maximums you can contribute to any account you select. If you enroll in a general-purpose health FSA, you cannot contribute to an HSA in the same plan year, unless your FSA is a limited-purpose plan that only covers dental and vision costs. Confirm with your benefits team if you want to pair an FSA with an HSA to avoid accidental non-compliance. Some HRAs can be paired with HSAs if they are structured as qualified HRAs that meet IRS rules, so review your Summary of Benefits to confirm if dual participation is allowed under your employer’s plan. If you use HSA funds for non-medical expenses before age 65, you will owe regular income tax on the withdrawal plus a 20% penalty, so keep all receipts for medical purchases made with HSA funds for tax records. For FSAs, note that dependent care FSAs are a separate product from health FSAs, and cannot be used to cover your own medical costs, only eligible dependent care costs like childcare for a minor child or care for a disabled dependent. Self-employed workers are not eligible for traditional employer-sponsored FSAs, but can open an HSA if they have a qualifying HDHP, or set up a solo HRA if they meet applicable eligibility rules.
Bottom line
The right account for you depends on your eligibility, expected annual medical spending, and long-term savings goals. If you have a qualifying HDHP and want the most flexible option that lets you save for both current and future medical costs, an HSA is the best choice, as funds never expire and stay with you for life. If you do not have access to an HDHP and have predictable annual medical costs you can estimate in advance, an FSA can help you reduce your tax bill for those expenses, as long as you carefully calculate how much you will spend to avoid forfeiting unused funds. If your employer offers an HRA, it is essentially free money for eligible medical costs, so you should always take advantage of it if you meet the plan’s requirements, even if you are also contributing to another eligible account.
This content is for educational purposes only and does not constitute insurance, tax, legal, or medical advice. All plan rules are set by your employer, plan administrator, and applicable federal and state regulations. Review your official Summary of Benefits and Coverage, plan documents, or speak with a licensed benefits broker to confirm eligibility, contribution limits, and eligible expenses for your specific plan.
Important note: This page is educational and is not insurance, tax, legal, or medical advice. Confirm current rules in your plan documents or with a licensed professional.