Last updated ·Published ·By the WiserWork team
HSA Contribution Calculator
Your HSA limit, the tax it saves, and what investing the balance grows into
Short answer: For 2026 you can put $4,400 into an HSA with self-only high-deductible coverage or $8,750 with family coverage, plus $1,000 more if you are 55 or older. Anything your employer contributes counts against that same limit. Money routed through payroll skips income tax and FICA on the way in, grows untaxed, and comes out untaxed for qualified medical expenses.
Worked example: Using this page’s defaults — family coverage, age 40, $6,000 of your own money, $1,000 from your employer, a 22% bracket — the employer’s $1,000 leaves $7,750 of room, so your full $6,000 is allowed. It saves $6,000 × (22% + 7.65%) = $1,779 this year, and $1,750 of the $8,750 limit goes unused.
Source: Rev. Proc. 2025-19, Internal Revenue Bulletin 2025-21. It sets the 2026 limits at $4,400 and $8,750; the $1,000 age-55 catch-up is in IRS Publication 969.
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The HSA is the most tax-advantaged account in America and the most misused: most holders treat it as a medical checking account, missing that it's the only vehicle where money enters untaxed (skipping FICA too, via payroll), grows untaxed, and leaves untaxed — the "triple advantage" no 401(k) or Roth matches. This calculator computes your 2026 limit, the real tax saved per contribution, and the number that changes strategies: what an invested HSA becomes by 65.
The 2026 Rules
| Item | Amount |
|---|---|
| Self-only limit | $4,400 |
| Family limit | $8,750 |
| Catch-up (55+) | +$1,000 |
| Eligibility | Enrolled in a qualifying high-deductible health plan (HDHP: min deductible $1,700/$3,400), no other coverage, not on Medicare |
| Employer contributions | Count against your limit — free money, but subtract it |
Why Each HSA Dollar Beats Each 401(k) Dollar
A 22%-bracket payroll contribution saves 29.65% immediately (bracket + 7.65% FICA — 401(k) contributions don't skip FICA), then grows and exits tax-free for medical costs. Since retirees average $150k+ in lifetime medical expenses, "tax-free for medical" effectively means tax-free, period, for money you'll genuinely need. The standard funding order reflects this: 401(k) to the match → HSA to the max → back to the 401(k)/IRA.
The Stealth-IRA Strategy
- Max the HSA via payroll, invest the balance (most custodians allow investing above a $1–2k cash floor — the step 90% of holders skip).
- Pay current medical bills out of pocket when cash flow allows, and save the receipts.
- Reimburse yourself decades later: there's no deadline on reimbursing documented past expenses — your receipts shoebox becomes a tax-free withdrawal voucher redeemable anytime.
- At 65: non-medical withdrawals become penalty-free (taxed like a Traditional IRA) — the HSA's floor is 'extra IRA'; its ceiling is 'never taxed at all.'
The Fine Print
- HDHP required, checked monthly: mid-year plan changes prorate the limit; Medicare enrollment (including automatic Part A at Social Security claiming) ends eligibility — stop contributions 6 months before claiming SS after 65.
- Non-medical withdrawals before 65: income tax + 20% penalty — the steepest in the code; the account rewards patience only.
- Qualified expenses are broad: deductibles, dental, vision, prescriptions, therapy, menstrual products, and Medicare premiums (not Medigap) later.
- Spouses: two self-only HSAs or a family-limit split; the catch-up must live in each spouse's own account.
- State wrinkle: CA and NJ tax HSA earnings — the triple advantage is federal.
How to Use the Calculator
- Pick coverage tier, age, your contribution and the employer's.
- Read this year's saving, your remaining room, and the invested-until-65 projection.
- If the room figure isn't zero and cash flow allows — that's the next dollar's home, before almost anything else.
Frequently Asked Questions
Is an HDHP worth it just to get the HSA?
Often — compare premium savings + employer HSA money + tax savings against the higher deductible. Healthy families and heavy planners usually come out ahead; chronic high utilizers may not. Run your real usage, not the brochure's.
What if I use HSA money for groceries by mistake?
Non-qualified withdrawals owe income tax + 20% penalty (pre-65). Honest mistakes can be repaid to the HSA before the filing deadline. Keep the debit card for medical only; reimburse yourself deliberately.
Can I contribute if my spouse has an FSA?
A spouse's general-purpose health FSA covers you too, killing your HSA eligibility — the classic two-employer trap. Limited-purpose FSAs (dental/vision only) coexist fine.
FSA or HSA — which is better?
No contest when eligible: the HSA rolls over forever, invests, and is triple-tax-free; the FSA is use-it-or-lose-it. The FSA exists for people whose plans aren't HDHPs (see the FSA tool).
What happens to my HSA when I change jobs or plans?
It's yours forever — fully portable, keeps growing and reimbursing regardless of future coverage. You just can't add NEW contributions without HDHP coverage. Old-job HSAs can be consolidated to a low-fee custodian anytime.
Can I move IRA money into my HSA?
Once per lifetime, up to the annual limit — rarely optimal (it uses contribution room) except when facing big medical bills without HSA cash. New contributions beat the rollover when possible.
Is my information private?
Yes — every figure computes locally in your browser.
Max it, invest it, save the receipts, and let the only triple-tax-free account in the code compound for decades. The HSA's best-kept secret isn't eligibility — it's that the investment tab exists.