FSA vs HSA Comparison Calculator
Compare the tax savings and long-term value of Flexible Spending Accounts (FSA) vs Health Savings Accounts (HSA).
Medical Disclaimer
This calculator is for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about your health. Never disregard professional medical advice or delay seeking it because of results from this tool.
HSA Projected Balance
$14,783.60
HSA Long-Term Advantage
$15,783.60
Inputs
Comparison
FSA Annual Tax Savings
$889.50
FSA Forfeited (Use-It-or-Lose-It)
$1,000.00
FSA Net Annual Benefit
-$110.50
HSA Annual Tax Savings
$889.50
Account Balance Over Time
Figures current as of 2026. Sources: IRS Rev. Proc. 2025-32, IRS Rev. Proc. 2025-19
How to Use This Calculator
- Enter your expected annual healthcare out-of-pocket expenses.
- Select your tax bracket to see the tax-savings calculation.
- Enter your employer's FSA or HSA contribution (if any).
- Compare the FSA vs HSA net savings outputs side by side.
- Note that HSA funds roll over year to year while FSA funds generally do not.
How the result changes with Planned Contribution
| Planned Contribution | HSA Projected Balance | HSA Long-Term Advantage |
|---|---|---|
| $1,325.00 | $0.00 | $0.00 |
| $3,388.00 | $20,519.64 | $21,907.64 |
| $5,863.00 | $35,480.64 | $37,177.14 |
| $7,925.00 | $35,480.64 | $37,177.14 |
What each input means
- Expected Annual Medical Expenses
- Your anticipated out-of-pocket medical costs this year.
- Planned Contribution
- How much you plan to contribute. FSA max is $3,400; HSA max is $4,400 (individual).
- Marginal Tax Bracket
- Your federal marginal income tax rate.
- HSA Investment Return
- Expected annual return if you invest your HSA balance. 0% if you keep it in cash.
- Years to Project
- Number of years to project the HSA investment growth.
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersExpected Annual Medical Expenses = 2000, Planned Contribution = 3000, Marginal Tax Bracket = 22, HSA Investment Return = 7 = 5 input(s) provided
- Calculate HSA Projected Balance14783.6 = $14,783.6
- Calculate HSA Long-Term AdvantageHSA Long-Term Advantage15783.6 = $15,783.6
- Calculate FSA Annual Tax SavingsFSA Annual Tax Savings889.5 = $889.5
- Calculate FSA ForfeitedFSA Forfeited1000 = $1,000
Figures and sources
- 2026 FSA contribution limit (2026) — IRS Rev. Proc. 2025-32
- 2026 HSA self-only contribution limit (2026) — IRS Rev. Proc. 2025-19
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