Health Savings Account
The math behind the HSA "triple tax advantage"
An HSA — available if you have a qualifying high-deductible health plan — is uniquely tax-efficient. Money goes in before income tax, grows tax-free, and is withdrawn tax-free for qualified medical expenses. And if you contribute through your employer's payroll, you also dodge the 7.65% FICA tax — something a Traditional IRA or 401(k) can't do.
2026 HSA contribution limits
| Coverage | 2026 limit | Age 55+ catch-up |
|---|---|---|
| Self-only | $4,400 | +$1,000 |
| Family | $8,750 | +$1,000 |
Source: IRS Revenue Procedure 2025-19. The catch-up is per HSA-holder aged 55 or older.
Payroll vs. personal contributions
The FICA savings only happen when contributions run through your employer's cafeteria plan as a payroll deduction. If you contribute personally (say, with a year-end lump sum), you still get the federal and state income-tax deduction on your return, but not the 7.65% FICA break. Where possible, fund the HSA through payroll to capture all three savings.
The retirement angle
After age 65 you can withdraw HSA funds for any reason, paying only ordinary income tax — making an HSA function like a Traditional IRA with a health-cost superpower. Many savers pay current medical bills out of pocket and let the HSA grow invested for decades. Pair this with the 401(k) contribution calculator and Roth vs Traditional tool to map your full tax-advantaged stack.
Questions
HSA Tax Savings Calculator 2026 FAQ
What is the HSA contribution limit for 2026?
For 2026 the IRS limits are $4,400 for self-only coverage and $8,750 for family coverage, plus a $1,000 catch-up contribution for account holders aged 55 and older. These limits include any contributions your employer makes on your behalf.
How much tax does an HSA save me?
An HSA contribution reduces your taxable income, so it saves tax at your marginal rate. A $4,400 contribution in the 22% bracket saves $968 in federal income tax; contributing through payroll adds 7.65% FICA savings ($337), and state income tax savings on top. Altogether that can be 30% or more of the contribution.
Why is an HSA called triple-tax-advantaged?
Because it gets a tax break at all three stages: contributions are pre-tax (deductible), the balance grows tax-free, and withdrawals for qualified medical expenses are tax-free. No other account — not a 401(k), Traditional IRA or Roth IRA — offers all three at once.
Do I save FICA tax with an HSA?
Only if you contribute through your employer's payroll under a Section 125 cafeteria plan — then the 6.2% Social Security and 1.45% Medicare taxes are skipped too. Contributions you make personally outside payroll still get the income-tax deduction but not the FICA savings.
- Sources: IRS Rev. Proc. 2025-19 (2026 HSA limits: $4,400 self / $8,750 family) · IRS Rev. Proc. 2025-32 (2026 brackets) · SSA FICA rates · State departments of revenue.
- 🔄 Last updated June 27, 2026 · Tax year 2026
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