Best HSA Accounts —
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Source: IRS Revenue Procedure 2025-19. HDHP out-of-pocket max: $8,500 individual / $17,000 family. Bronze and Catastrophic ACA plans qualify as HDHPs starting 2026.
New to HSAs? Start with What is an HSA? or compare HSA vs. FSA before choosing a provider.
Why Fidelity HSA is in a different category
Most bank-administered HSAs treat cash balances like a legacy checking account — earning 0.01% to 0.07% APY on uninvested cash. Fidelity routes uninvested cash into the Fidelity Government Cash Reserves money market fund, which currently yields —. On a $5,000 balance that is the difference between $5/year at the national average and over $150/year at Fidelity’s current rate. Over a 20-year career of HSA contributions, this gap compounds significantly.
The second dimension is investment access. Fidelity offers its full self-directed brokerage platform — individual stocks, ETFs, mutual funds, bonds, CDs, and options — with no investment minimum, no investment fee, and access to zero-expense-ratio index funds like FZROX and FZILX. No other HSA provider offers this combination at zero cost.
Provider comparison at a glance
| Provider | Cash APY | Monthly fee | Invest min | Platform |
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Showing top 10 by composite score. See full rankings in the provider cards above.
The FICA tax trick most people miss
If your employer offers payroll HSA deductions, use them — even if you prefer a different HSA provider. Contributions made through payroll deduction avoid FICA taxes (Social Security and Medicare combined = 7.65%), worth roughly $337 in tax savings on a $4,400 individual contribution. Contributions made directly to an HSA still get an income tax deduction but miss the FICA savings entirely.
The optimal strategy: contribute through payroll to whatever free provider your employer offers, then execute a direct trustee-to-trustee transfer to Fidelity once or twice a year. Transfers are free, unlimited, and do not count as a taxable distribution or a new contribution.
Cash-only versus investing: two different use cases
Not everyone should be investing their HSA balance. If you expect to use HSA funds for near-term or ongoing medical expenses, keeping cash at a high-rate provider is the right approach. Fidelity leads on cash APY among scored providers, but Lake Michigan Credit Union (LMCU) at — is worth noting for people who want a credit union HSA with no monthly fee and a debit card for direct medical payments.
If your goal is long-term invested growth — the stealth IRA strategy — investment platform quality matters far more than the cash APY. Fidelity and Lively (via Schwab) both offer full self-directed brokerage access. Lively charges a $24/year investment fee for balances under $3,000 in the investment account, so it is more cost-effective at higher balances.
HSA as a stealth retirement account
A fully invested HSA is the most tax-efficient account available in the US tax code — more efficient than a Roth IRA in some scenarios. The triple tax benefit: contributions are tax-deductible (or pre-FICA through payroll), growth is completely tax-free, and withdrawals for qualified medical expenses are tax-free at any age. At age 65, you can withdraw for any reason and pay only ordinary income tax — identical to a traditional IRA, but with years of additional tax-free growth.
The optimal strategy for high earners: maximize HSA contributions each year, invest in zero-expense-ratio index funds through Fidelity, pay current medical expenses out of pocket, and keep the receipts indefinitely. There is no time limit on HSA reimbursements — you can reimburse yourself for a 2026 medical expense in 2046 as long as you have the receipt. This effectively turns medical spending into a deferred tax-free withdrawal decades later.
What qualifies as an HDHP in 2026
To contribute to an HSA, you must be enrolled in a qualifying High-Deductible Health Plan. For 2026, a plan qualifies if it has a minimum deductible of $1,700 for individual coverage or $3,400 for family coverage, and out-of-pocket maximums not exceeding $8,500 individual or $17,000 family. Starting in 2026, Bronze and Catastrophic ACA marketplace plans automatically qualify as HDHPs — a significant expansion of eligibility that makes HSAs available to many more ACA enrollees who previously were not eligible.
You cannot contribute to an HSA if you are enrolled in Medicare, covered by a non-HDHP health plan as a secondary plan, or claimed as a dependent on someone else’s tax return. Mid-year changes in HDHP status require prorating your annual contribution limit.
A Health Savings Account is a tax-advantaged account available to people enrolled in a qualifying High-Deductible Health Plan. The triple tax benefit: contributions are tax-deductible, growth is tax-free, and withdrawals for qualified medical expenses are tax-free. At age 65, funds can be withdrawn for any purpose, taxed as ordinary income like a traditional IRA. Unlike an FSA, HSA funds roll over indefinitely — there is no use-it-or-lose-it rule.
You can open an HSA directly with any provider — employer involvement is not required. The only requirement is current HDHP enrollment. However, if your employer offers payroll HSA deductions, use them first: payroll contributions avoid FICA taxes (worth approximately $337 on a $4,400 contribution) that direct contributions do not. You can always transfer the balance to your preferred provider via a direct trustee-to-trustee transfer, which is free and does not count as a distribution.
HSAs require HDHP enrollment, roll over indefinitely, belong to you permanently, and can be invested. FSAs are available with any health plan, have a use-it-or-lose-it rule each year with limited rollover options, are owned by your employer, and generally cannot be invested. If you have HDHP coverage, an HSA is almost always superior to an FSA because the investment and rollover benefits compound dramatically over time. See the full HSA vs. FSA comparison.
Yes. Most HSA providers allow investing once you meet a minimum cash balance, typically $0 to $2,500. Fidelity and Lively have no investment minimum. Invested HSA funds grow completely tax-free, and withdrawals for qualified medical expenses are also tax-free. A fully invested HSA with low-cost index funds is one of the most powerful long-term savings tools in the US tax code. Use the HSA investment calculator to model 20-year growth. Calculate your full tax savings with the HSA tax benefits calculator.
Your HSA is yours permanently. It does not expire or revert to your employer when you leave a job. You can continue using existing funds for qualified medical expenses and the balance remains invested. You simply cannot make new contributions unless you are enrolled in a qualifying HDHP.
For 2026: $4,400 for individual (self-only) HDHP coverage, $8,750 for family coverage, and an additional $1,000 catch-up contribution for account holders age 55 or older. These limits apply to the total of employee and employer contributions combined. Exceeding the limit triggers a 6% excise tax on the excess amount. Source: IRS Revenue Procedure 2025-19.
Yes, but with tax consequences if before age 65. Withdrawals for non-qualified expenses before age 65 are subject to ordinary income tax plus a 20% penalty. At age 65 or older, you can withdraw for any reason and pay only ordinary income tax — identical to a traditional IRA withdrawal.