FSA vs. HSA: How Each Account Handles Your Family's Healthcare Dollars

How each account is structured

A Flexible Spending Account (FSA) and a Health Savings Account (HSA) are both tax-advantaged accounts that let you pay for qualified medical expenses with pre-tax dollars. That shared benefit is where much of the similarity ends.

An FSA is offered through an employer as part of a benefits package. You elect how much to contribute at open enrollment, and the full elected amount is available to spend from the first day of the plan year, even before your paycheck deductions have covered it. The trade-off is the "use-it-or-lose-it" rule: most FSA funds must be spent by the plan year deadline. Some employers allow a grace period of up to 2.5 months or a rollover of up to $640 (the IRS limit as of 2024), but neither option is required, and many plans offer neither.

An HSA works differently. To open one, you must be enrolled in a high-deductible health plan (HDHP), which the IRS defines by minimum deductible and maximum out-of-pocket thresholds that adjust annually. Contributions accumulate in the account, roll over each year without limit, and can be invested in mutual funds or other options depending on the account provider. Funds withdrawn for qualified medical expenses are never taxed.

This article provides general financial information and is not personalized financial or tax advice. Consult a qualified financial or tax professional for guidance specific to your situation.

Contribution limits and the tax benefit

The IRS sets annual contribution limits for both account types. For 2024, the FSA limit for health FSAs is $3,200 per employee. If both spouses have access to separate FSAs through their employers, each can contribute up to the individual limit, though the accounts are not combined.

HSA limits are higher and tied to coverage level. For 2024, the limit is $4,150 for self-only coverage and $8,300 for family coverage, with an additional $1,000 catch-up contribution allowed for account holders age 55 and older. Contributions can come from you, your employer, or both, as long as the total stays within the annual ceiling.

Both accounts reduce your federal taxable income. HSA contributions made through payroll also avoid Social Security and Medicare taxes, which is an advantage FSA contributions share when made via payroll deduction. The practical effect is that every dollar you put into either account costs you less than a dollar in take-home pay, depending on your marginal tax bracket.

What you can spend the money on

Both FSAs and HSAs cover a broad range of qualified medical expenses as defined by the IRS. This includes deductibles, copays, prescription medications, vision care (glasses and contact lenses), dental care, and many over-the-counter items. The CARES Act, passed in 2020, permanently expanded eligible OTC purchases to include items like pain relievers, allergy medications, and menstrual care products without requiring a prescription.

HSAs have one additional long-term use: after age 65, you can withdraw funds for any reason without a penalty, though non-medical withdrawals become subject to ordinary income tax at that point. Before 65, non-medical withdrawals carry a 20% penalty plus income tax. FSA funds cannot be carried into retirement; they exist solely for current-year spending.

Dependent care FSAs are a separate product designed for childcare costs and operate under different rules. A health FSA and a dependent care FSA can be held simultaneously, but they are distinct accounts with separate contribution limits.

For families managing multiple healthcare costs alongside other financial goals, see our annual family finance checklist for a broader view of where these accounts fit.

Choosing based on your health plan and spending patterns

The single most important factor is your health insurance type. If your employer only offers a traditional preferred provider organization (PPO) or HMO plan, an HSA is not available to you. An FSA is the tax-advantaged option in that case.

If you do have access to an HDHP, the choice becomes a question of cash flow and saving behavior. HDHPs carry lower monthly premiums but higher out-of-pocket costs when you need care, so an HSA helps offset those costs. Families who consistently spend the same amount on healthcare each year may find an FSA's predictability useful. Families who want to build a healthcare reserve or expect rising medical costs in future years tend to benefit more from an HSA's rollover feature.

Some employers offer a limited-purpose FSA alongside an HSA. This type of FSA covers only dental and vision expenses, which preserves HSA eligibility while still providing a pre-tax account for those specific costs.

For families already thinking about how tax-advantaged accounts interact with broader savings goals, our guide to saving for college without derailing your finances covers how to balance competing priorities. For a fuller explanation of how these accounts work side by side, see what families need to know about FSAs and HSAs.

This article is for general informational purposes only and does not constitute financial, tax, or medical advice. Consult a licensed professional before making decisions about your healthcare coverage or accounts.