What's the Difference Between an HSA and an FSA?
Learn the key differences between an HSA and an FSA – both help you save on your healthcare expenses, but they're not the same.
2 minute read

What's the Difference Between an HSA and an FSA?
If you have your own insurance, there's a good chance you've come across a Health Savings Account (HSA) or a Flexible Spending Account (FSA) through your employer or insurance plan. Both account types can help you save on healthcare expenses, but there are significant differences in how they work and the benefits you can receive.
Overview of Each Account
HSA (Health Savings Account):
To qualify, you must be enrolled in a High-Deductible Health Plan (HDHP).
Contributions are tax-deductible, grow tax-free, and withdrawals for qualified expenses are tax-free.
Unused funds roll over from year to year and the account stays with you if you switch jobs.
Funds can often be invested once you reach a certain balance, potentially growing your savings for future medical needs or retirement.
FSA (Flexible Spending Account):
Typically offered by employers; you generally cannot open one on your own.
Contributions are made pre-tax, potentially lowering your taxable income.
“Use it or lose it” provision: You often must use the funds within the plan year or forfeit any unused amount. Some employers offer a grace period or allow you to carry over a limited amount.
The full election amount is available at the start of the plan year, even though contributions are deducted gradually from your paycheck.
Key Differences
Eligibility Requirements:
HSA: Must have a high-deductible health plan that meets IRS criteria.
FSA: Available if your employer offers it; no requirement to have a specific type of health plan, although some plans have restrictions on combining FSAs and HSAs.
Ownership:
HSA: You own and control the account. It remains yours even if you change jobs.
FSA: Your employer owns the account; if you leave your job, the account generally does not go with you.
Rollover Rules:
HSA: Unused balances roll over annually; there's no deadline to spend the funds.
FSA: Typically “use it or lose it.” Some plans offer a grace period or a small rollover, but limitations apply.
Contribution Limits:
HSA: Higher contribution limits (and a catch-up for those 55 and older). Limits are set by the IRS and may change each year.
FSA: Lower contribution limits, also determined by the IRS. Check with your employer for the annual maximum.
Investment Options:
HSA: Funds can often be invested in stocks, bonds, or mutual funds, giving you growth potential over time.
FSA: Funds generally can't be invested; they stay in a cash-like account.
Which One Is Right for You?
HSA might be right for you if:
You have an HDHP and want to take advantage of lower premiums.
You want to build long-term savings for healthcare expenses (or even retirement).
You're comfortable with potentially higher out-of-pocket costs in exchange for tax savings and growth opportunities.
FSA might be right for you if:
Your employer offers one and you want to reduce your taxable income for the current year.
You have predictable healthcare expenses you can plan for (like ongoing prescriptions or planned medical procedures).
You prefer having the full year's election amount available immediately.
In Summary
Both HSAs and FSAs help you manage healthcare costs more effectively by leveraging tax advantages. However, the key distinctions—like who owns the account, whether funds roll over, and eligibility requirements—can make one option more suitable than the other depending on your financial situation and healthcare needs.
Before you decide, take a close look at your current health plan, your anticipated medical expenses, and your long-term savings goals. It may also be helpful to discuss your options with a financial advisor or your company's benefits administrator. Feel free to reach out to the Burst Team too – we'd be happy to help.
