HSA Calculator 2026 — Tax Savings & Growth
The HSA is the only triple-tax-advantaged account in the US code: contributions are deductible (and payroll contributions skip Social Security and Medicare tax too), growth is tax-free, and qualified medical withdrawals are tax-free. See your 2026 tax savings and what your HSA grows into — limits this year are $4,400 self-only / $8,750 family, plus $1,000 catch-up at 55+.
- — of which FICA savings (payroll)
- $336.60
- Projected HSA at retirement
- $238,617.95
- Total contribution tax savings over period
- $32,615.00
How this calculator works
- Contributions reduce federal taxable income at your marginal rate, and payroll contributions also skip the 7.65% FICA tax — a benefit even the 401(k) doesn't offer. 2026 limits: $4,400 self-only, $8,750 family, +$1,000 at 55+.
- The projection invests what you don't spend on medical bills each year and compounds it to retirement. After 65, non-medical withdrawals are taxed like a traditional IRA — medical ones stay tax-free forever.
- State tax savings vary (California and New Jersey don't recognize HSA deductions) and are not included.
Frequently asked questions
Who can contribute to an HSA?
You need an HSA-qualified high-deductible health plan (HDHP) — for 2026 that means a deductible of at least $1,700 self-only / $3,400 family — and no other disqualifying coverage like a general-purpose FSA or Medicare.
Should I spend my HSA or invest it?
If cash flow allows, pay medical bills out of pocket and let the HSA compound invested — you can reimburse yourself for saved receipts years or decades later, tax-free. It's the strongest version of the account.
What happens to my HSA if I change jobs or plans?
It's yours forever — fully portable, never use-it-or-lose-it (unlike an FSA). You just can't add new contributions in months you're not HDHP-covered.
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Disclaimer: Results are estimates for educational purposes only and are not tax, legal, or financial advice. Tax rules are simplified (credits, phase-outs, and local taxes may not be modeled). Verify important decisions with the IRS, your state tax authority, or a licensed professional.