Fidelity’s HSA charges $0 in fees — no monthly maintenance fee, no investment fee, no administrative charge — and allows you to invest in thousands of ETFs and mutual funds including Fidelity’s own zero-expense-ratio funds. It is consistently rated the best HSA available, and here is a complete guide for 2026.
2026 HSA Contribution Limits
| Coverage | 2026 Limit | 55+ Catch-Up | Total with Catch-Up |
|---|---|---|---|
| Self-only HDHP | $4,300 | $1,000 | $5,300 |
| Family HDHP | $8,550 | $1,000 | $9,550 |
Source: IRS Publication 969. Contributions can be made until April 15, 2027 for the 2026 tax year (same as IRA deadline).
To be eligible to contribute, you must be enrolled in a High-Deductible Health Plan (HDHP). The IRS defines an HDHP in 2026 as a plan with a minimum deductible of $1,650 (self-only) or $3,300 (family).
Fidelity HSA Fees
| Fee | Fidelity HSA | Industry Average |
|---|---|---|
| Monthly maintenance fee | $0 | $2.50–$5/month |
| Investment/advisory fee | $0 | 0.20%–0.50%/year |
| Commission on ETF trades | $0 | $0 |
| Debit card fee | $0 | Sometimes $0 |
| Transfer out fee | $0 | $25–$50 |
| Investment minimum | $0 | $500–$2,000 |
Most HSA providers require a minimum cash balance (typically $1,000–$2,000) before you can invest — Fidelity requires $0. This means 100% of your HSA balance can be invested from day one.
The Triple Tax Advantage
HSAs are the only account with three simultaneous tax benefits:
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Contributions are tax-deductible. If you contribute through payroll deduction, contributions come out pre-FICA (saving Social Security and Medicare tax as well as income tax). If you contribute directly, you deduct the amount from your taxable income.
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Investment growth is tax-free. Unlike a taxable brokerage account, dividends, capital gains, and interest inside an HSA are never taxed — not even long-term capital gains rates apply. This compounding is fully tax-sheltered.
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Qualified withdrawals are tax-free. Withdrawals for qualified medical expenses — including doctor visits, prescriptions, dental, vision, and certain over-the-counter items — come out completely tax-free.
After age 65: Non-medical withdrawals are allowed without the 20% penalty, but are taxed as ordinary income (same treatment as a Traditional IRA). This means an HSA essentially becomes a second Traditional IRA for post-65 non-medical expenses.
Worked example: Sarah contributes $4,300 to her Fidelity HSA in 2026. She invests it in FXAIX (S&P 500 index fund, 0.015%). Over 25 years at 7% annualised return, the HSA grows to approximately $23,300 — all tax-free for qualified medical expenses. At a 22% tax rate, the tax savings on a $4,300 contribution = $946 in avoided income tax. The tax on $23,300 of growth = $0. A comparable taxable account at 15% long-term capital gains on $19,000 in growth = $2,850 in taxes. The HSA saves $3,796 in this example.
What to Invest In at Fidelity HSA
Fidelity allows investment in thousands of funds. Top choices for HSA investors:
| Fund | Type | Expense Ratio | Why It Works |
|---|---|---|---|
| FZROX | US Total Market | 0.00% | Lowest cost; broad diversification |
| FXAIX | S&P 500 | 0.015% | Portable S&P 500 exposure |
| FZILX | International | 0.00% | Global diversification at zero cost |
| VTI | US Total Market ETF | 0.03% | Portable; highly regarded |
| FXNAX | US Bond Index | 0.025% | Bond allocation for conservative balance |
Common HSA strategy: Invest aggressively while young (80–100% stock index fund) since medical expenses in early years can be paid out of pocket and the receipts saved — you can reimburse yourself years or decades later from the HSA, allowing tax-free growth.
How to Open a Fidelity HSA
You can open a Fidelity HSA whether your employer offers Fidelity or not. However:
If your employer already uses Fidelity for HSA: Your HSA is automatically set up when you enrol in the HDHP. Log in to Fidelity.com with your NetBenefits credentials.
If your employer uses a different HSA provider: You can open an individual Fidelity HSA directly:
- Go to fidelity.com/go/hsa
- Click Open an HSA
- Provide your SSN, current address, and HDHP coverage details
- Fund by bank transfer or rollover from your current HSA provider
Transferring from another HSA: You can roll over or transfer your existing HSA balance to Fidelity. A direct trustee-to-trustee transfer does not count against your annual contribution limit. Fidelity charges $0 to receive a transfer.
HSA vs. FSA
| Feature | HSA | FSA |
|---|---|---|
| Rolls over year to year | Yes (unlimited) | Limited ($610 carryover in 2026) |
| Investment option | Yes | No |
| Portability | Yes (yours to keep) | No (tied to employer) |
| HDHP required | Yes | No |
| Contribution limit (2026) | $4,300/$8,550 | $3,300 |
| After 65 flexibility | Yes (non-medical taxed, not penalised) | No |
HSAs are significantly more powerful long-term savings tools than FSAs. If you have access to an HDHP with an HSA, and your expected out-of-pocket medical costs are manageable, the HSA is typically the better choice.
The Shoebox Strategy: Deferred Reimbursement
One advanced technique for HSA maximisation:
- Pay all medical expenses out of pocket now (keep every receipt)
- Let your HSA balance compound tax-free for 10–20 years
- Years later, submit those old receipts for tax-free reimbursement — there is no time limit on HSA reimbursements for qualified expenses as long as they occurred after the HSA was opened
A $5,000 medical expense paid out of pocket at age 40 with receipts saved could be reimbursed tax-free at age 60 from an HSA that has grown to $27,000 — withdrawing $5,000 tax-free versus the alternative (taxable growth + capital gains).
Is the Fidelity HSA Available to Everyone?
Eligibility requirements:
- You must be enrolled in a qualifying HDHP
- You cannot be covered by any other health plan that is not an HDHP
- You cannot be enrolled in Medicare
- You cannot be claimed as a dependent on someone else’s tax return
No income limits apply to HSA contributions (unlike Roth IRA income limits).
For the full Fidelity account overview, see our Fidelity review. For Fidelity’s IRA options alongside the HSA, see our Fidelity Roth IRA guide.
The content on Wealthvieu is for informational purposes only and should not be considered financial, tax, or investment advice. Consult a qualified professional before making financial decisions. Full disclaimer · Editorial policy