M
MoneyMath

HSA Calculator (2026 Limits + Triple Tax Benefit)

The HSA is the only account with a triple tax benefit: deductible in, growth tax-free, withdrawals tax-free for medical. Used correctly, it's a stealth retirement account.

🟢 Updated April 2026👤 Reviewed by MoneyMath Editorial⚡ Runs in your browser · no data sent

Age 55+ adds $1,000 catch-up.

$
$
HSA in 25 Years
$474,368
$2,319 saved in year 1 taxes alone
2026 contribution limit$8,750
Federal tax saved (year 1)$1,440
FICA saved (payroll HSA only)$459
State tax saved (avg 5-8%)$420
Total year-1 tax savings$2,319
Show the formula
annual total = your contrib + employer contrib
future value = annual × [(1+r)^n − 1] / r
triple tax benefit: deductible + tax-free growth + tax-free qualified withdrawals

Why the HSA is the best retirement account

Most people think the HSA is a "health savings account" — a short-term pool to pay medical bills. That\'s the beginner mode. The power user move: max it, invest it, never touch it. Keep medical receipts for decades, then reimburse yourself tax-free at any point in the future. At 65, it functions as a traditional IRA for non-medical withdrawals.

2026 contribution limits

  • Self-only HDHP: $4,400
  • Family HDHP: $8,750
  • Age 55+ catch-up: +$1,000

The "stealth IRA" strategy

  1. Max your HSA every year.
  2. Invest 100% in low-cost index funds (don\'t use it for current medical bills).
  3. Pay medical bills out-of-pocket — save every receipt (photo, cloud backup).
  4. Let HSA compound for 20–40 years tax-free.
  5. In retirement, submit receipts for tax-free reimbursements. Untaxed growth on untaxed contributions.

Eligibility requirements

You must be enrolled in a High Deductible Health Plan (HDHP) — 2026 definition: deductible ≥ $1,650 (self) / $3,300 (family), out-of-pocket max ≤ $8,300 (self) / $16,600 (family). Not eligible: Medicare enrollment, being claimed as a dependent, or having any non-HDHP coverage (including FSA).

What counts as "qualified medical"

Doctor visits, prescriptions, dental, vision, mental health, OTC drugs (since 2020 CARES Act), menstrual products, medical equipment, long-term care insurance premiums (pro-rated by age). Includes your spouse and dependents even if not on your HDHP.

Frequently Asked Questions

What if I use my HSA for non-medical before 65?

You pay income tax on the withdrawal PLUS a 20% penalty. After age 65, non-medical withdrawals still pay income tax but no penalty — same as traditional IRA. This is why the HSA is sometimes called "better than a 401(k)" even without the medical use case.

Can I invest my HSA, or is it cash-only?

Most HSAs let you invest once you hit a minimum cash balance (~$1,000). Best platforms for investing: Fidelity HSA (zero fees, full brokerage), Lively (free, Schwab-invested), HSA Bank (older, has fees). Employer-provided HSAs often have higher fees — check if you can roll into Fidelity/Lively.

Can I contribute if I'm self-employed?

Yes — as long as you have HDHP coverage. You contribute directly (not through payroll, so no FICA savings) and deduct above-the-line on your tax return. Self-employed HSA contributions are genuinely one of the best tax moves available.

What happens to my HSA if I switch to a non-HDHP plan?

You can no longer contribute, but your existing balance stays yours forever, continues to grow tax-free, and can still be used for medical expenses. HSAs are portable — unlike FSAs, you don't lose the money.

HSA vs FSA — which should I pick?

HSA wins almost always. FSAs expire (use-it-or-lose-it, with limited rollover), aren't investable, and aren't portable. The only reason to pick FSA is if you can't get HDHP coverage and you have high predictable medical costs.