Side-by-Side Comparison
| Feature | HSA | FSA |
|---|
Your Tax Savings Estimate
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Results
Annual Tax Savings
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Contribution—
Federal Tax Savings—
FICA Savings (via payroll)—
Effective Cost After Tax—
HSA vs FSA: Which Should You Choose?
Both Health Savings Accounts and Flexible Spending Accounts let you pay for medical expenses with pre-tax dollars, saving you money on healthcare. But they have important differences that make one or the other a better fit depending on your situation.
The Key Distinction: Eligibility
You can only contribute to an HSA if you're enrolled in a High Deductible Health Plan (HDHP). If you have a traditional health plan (PPO, HMO with low deductible), you can't use an HSA — but you can use an FSA. Many people don't have a choice; their employer determines which they qualify for.
When HSA Wins
- Funds roll over year after year — no "use it or lose it" stress
- Can invest in mutual funds and stocks for long-term growth
- Portable — keeps it even when you change jobs
- Triple tax advantage: deduct contributions, grow tax-free, withdraw tax-free for medical
- After 65, acts like a traditional IRA for non-medical withdrawals
When FSA Wins
- Available with any health plan — not just HDHPs
- Full annual election available immediately on Jan 1 (front-loaded benefit)
- Dependent Care FSA available ($5,000/year) — separate from medical FSA
- Some FSAs offer a grace period or $640 carryover (check your plan)
Frequently Asked Questions
Can I have both an HSA and FSA at the same time? ▼
Generally no — you can't contribute to a regular Health FSA and an HSA simultaneously. However, a "Limited Purpose FSA" is allowed alongside an HSA. A limited purpose FSA covers only dental and vision expenses, leaving the HSA eligible status intact. This combination maximizes your pre-tax savings while keeping HSA eligibility.
What happens to my FSA if I leave my job? ▼
FSA funds are typically forfeited when you leave your employer mid-year — you lose any unused balance. You may be able to continue coverage via COBRA, but COBRA FSA continuation is complex and rarely cost-effective. HSAs, by contrast, are yours forever regardless of employment status — they travel with you when you change jobs.