At least 68% of Americans do not have a Health Savings Account, even though HSAs offer a triple tax advantage that no other savings vehicle in the U.S. tax code can match: contributions are tax-deductible, growth is tax-free, and withdrawals for qualified medical expenses are also tax-free. Surveys consistently show that only about a quarter to a third of American adults hold an HSA, despite more than 35 million accounts existing nationwide and total HSA assets exceeding $120 billion. The gap is not simply a matter of choice — many people are excluded by plan eligibility rules, while others who could open an account never do because they misunderstand how HSAs work.
Consider a 45-year-old worker earning $70,000 who contributes $4,000 a year to an HSA. In the 22% federal bracket, she saves roughly $880 in federal income tax annually, plus payroll tax savings if she contributes through her employer. If she invests the balance and earns 6% annually for 20 years, she could enter retirement with more than $150,000 earmarked for medical costs — all of it potentially tax-free. Yet most Americans in her position never open the account, leaving one of the most powerful retirement tools on the table.
Table of Contents
- Why Do 68% of Americans Not Have a Health Savings Account?
- The Triple Tax Advantage — and Its Hidden Strings
- HSAs as a Stealth Retirement Account
- HSA vs. 401(k): Where Should the Next Dollar Go?
- Common Mistakes and Pitfalls
- HSAs at Death — The Beneficiary Problem
- The Future of HSA Policy
- Conclusion
- Frequently Asked Questions
Why Do 68% of Americans Not Have a Health Savings Account?
The single biggest barrier is eligibility. To contribute to an HSA, you must be enrolled in a qualifying high-deductible health plan (HDHP) — in 2025, that means a deductible of at least $1,650 for individuals or $3,300 for families. Tens of millions of Americans are covered by traditional PPO or HMO plans, Medicare, Medicaid, or TRICARE, none of which permit HSA contributions. For these people, the 68% figure reflects a structural exclusion, not a savings failure. The second barrier is awareness and confusion.
Research from the Employee Benefit Research Institute and plan administrators has repeatedly found that workers confuse HSAs with Flexible Spending Accounts (FSAs), which carry “use it or lose it” rules. An employee who believes her HSA balance will vanish in December has little incentive to fund it. By comparison, an HSA balance rolls over forever, is portable when you change jobs, and can be invested like an IRA — facts that a large share of eligible workers simply do not know. Finally, affordability plays a role. A family living paycheck to paycheck on a high-deductible plan may feel they cannot spare contributions while also facing a $3,300+ deductible. For lower-income households, the immediate cash-flow strain often outweighs a tax deduction that is worth less in lower brackets.
The Triple Tax Advantage — and Its Hidden Strings
The HSA’s appeal rests on three layers of tax benefit. Contributions reduce taxable income (or escape payroll taxes entirely when made via employer payroll deduction). Investment earnings compound tax-free. And withdrawals are untaxed as long as they pay for qualified medical expenses — a category that includes deductibles, prescriptions, dental work, vision care, hearing aids, and, after age 65, Medicare premiums. A 401(k) or traditional IRA offers only two of those three benefits; a Roth offers a different two. Only the HSA delivers all three.
But there are strings attached. Withdraw money for non-medical purposes before age 65 and you owe ordinary income tax plus a 20% penalty — double the 10% penalty on early IRA withdrawals. After 65, non-medical withdrawals avoid the penalty but are still taxed as income, making the HSA behave like a traditional IRA at that point. There is also a state-level wrinkle: California and New Jersey do not recognize HSA tax benefits for state income tax, so residents there owe state tax on contributions and earnings. A further limitation arrives at retirement: once you enroll in Medicare, you can no longer contribute to an HSA. Workers who delay Medicare past 65 must also beware of Medicare’s six-month retroactive enrollment, which can trigger excess-contribution penalties if HSA contributions continued during that lookback window.
HSAs as a Stealth Retirement Account
For retirement planners, the most underused feature of the HSA is its role as a supplemental retirement vehicle. Fidelity estimates that a 65-year-old retiring today will need roughly $165,000 to cover health care costs in retirement — and that figure excludes long-term care. An HSA is the only account designed to meet that liability with fully tax-free dollars. The advanced strategy is simple in concept: pay current medical bills out of pocket, let the HSA balance stay invested, and keep receipts.
Because the IRS imposes no deadline on reimbursing yourself for qualified expenses, a retiree can withdraw money decades later — tax-free — against receipts accumulated over a working lifetime. For example, a couple who maxes out family contributions ($8,550 in 2025, plus $1,000 catch-up each after age 55) for 15 years before retirement could accumulate well over $200,000, enough to cover Medicare Part B and D premiums, dental implants, and out-of-pocket costs through their 70s and 80s without touching taxable accounts. Yet account data shows most holders never get there: a large majority of HSA owners keep their entire balance in cash, spending it down annually like a checking account. The average HSA balance hovers around $4,500 — far below the level needed to make a dent in retirement health costs.
HSA vs. 401(k): Where Should the Next Dollar Go?
For workers deciding where to direct savings, the conventional hierarchy is: contribute to the 401(k) up to the employer match first, since a match is an instant 50–100% return. After that, many advisors argue the HSA should come before additional 401(k) contributions. The math favors the HSA because medical withdrawals escape taxation entirely, whereas every 401(k) dollar is eventually taxed. The tradeoff is flexibility.
A 401(k) loan or hardship withdrawal can fund a home purchase or emergency; HSA money used for non-medical needs before 65 faces that punishing 20% penalty. There is also the underlying insurance tradeoff: choosing an HDHP to gain HSA access means accepting higher out-of-pocket exposure. For a family with chronic conditions and predictable high utilization, a traditional plan with higher premiums but lower deductibles may cost less overall — making the HSA the wrong tool despite its tax perks. The account should never drive the insurance decision; the expected health costs should.
Common Mistakes and Pitfalls
The most common mistake is leaving HSA funds in cash. Many custodians require a minimum balance — often $1,000 or $2,000 — before allowing investment, and some never prompt account holders to invest at all. Over 20 years, the difference between 0.5% interest and a 6% invested return on steady contributions can exceed $100,000. A second pitfall is poor recordkeeping.
The pay-now, reimburse-later strategy collapses if you cannot document expenses; the IRS can demand receipts in an audit, and undocumented withdrawals become taxable plus penalized. Digitize and back up every receipt. Third, watch custodian fees — monthly maintenance charges, investment fees, and paper statement fees can quietly erode small balances. Unlike a 401(k), you are free to transfer your HSA to a lower-cost provider, but few account holders ever do. Finally, beware of contribution errors: exceeding annual limits, contributing while covered by a spouse’s general-purpose FSA, or contributing after Medicare enrollment all create excess contributions subject to a 6% excise tax each year until corrected.
HSAs at Death — The Beneficiary Problem
HSAs have an estate-planning weakness many owners never consider. If a spouse inherits the account, it remains an HSA with all benefits intact.
But if anyone else — a child, a sibling — inherits it, the account stops being an HSA on the date of death and the entire balance becomes taxable income to the beneficiary in that single year. A $200,000 HSA left to an adult child could push that child into a far higher bracket. For unmarried account holders or surviving spouses, the practical answer is often to spend HSA dollars first in late retirement, or to use accumulated receipts to drain the balance tax-free before death.
The Future of HSA Policy
Policymakers from both parties have floated HSA expansions — proposals have included allowing Medicare enrollees to contribute, raising contribution limits, permitting HSA funds to pay insurance premiums more broadly, and decoupling HSAs from high-deductible plans altogether. If eligibility were decoupled from HDHPs, the 68% non-participation figure could fall sharply.
In the meantime, the trend lines point upward: account counts and assets have grown every year for two decades, and more employers now seed accounts with contributions. For workers eligible today, waiting for better rules means forfeiting years of tax-free compounding that cannot be recovered.
Conclusion
The fact that at least 68% of Americans lack an HSA reflects a mix of structural exclusion, confusion with FSAs, and short-term cash-flow pressure. But for the millions who are eligible and able to contribute, the HSA stands alone in the tax code: deductible going in, tax-free growing, and tax-free coming out for medical costs that nearly every retiree will face. Treated as an investment account rather than a spending account, it can quietly become a six-figure pillar of retirement security. The next steps are straightforward.
Check whether your health plan qualifies as an HDHP. If it does, open or fund the HSA — at minimum capturing any employer contribution — and invest balances above your near-term medical cushion. Keep receipts, mind the Medicare cutoff, and revisit your custodian’s fees annually. Few accounts reward this small amount of attention with as much long-term, tax-free value.
Frequently Asked Questions
Who is eligible to contribute to an HSA?
You must be enrolled in a qualifying high-deductible health plan, have no other disqualifying coverage (including Medicare or a general-purpose FSA), and not be claimed as a dependent on someone else’s tax return.
How much can I contribute in 2025?
$4,300 for self-only coverage and $8,550 for family coverage, plus a $1,000 catch-up contribution if you are 55 or older.
What happens to my HSA if I change jobs or health plans?
The account is yours and moves with you. You keep and can spend the balance anytime; you just cannot make new contributions unless you are again covered by a qualifying HDHP.
Can I use HSA money for Medicare premiums?
Yes. After age 65, HSA funds can pay Medicare Part B, Part D, and Medicare Advantage premiums tax-free, though not Medigap premiums.
Is an HSA better than a 401(k)?
For medical expenses, yes — HSA dollars avoid tax entirely, while 401(k) withdrawals are taxed. Most planners suggest capturing your full 401(k) match first, then prioritizing the HSA.
What if I withdraw HSA money for non-medical expenses?
Before age 65, you pay income tax plus a 20% penalty. After 65, the penalty disappears but the withdrawal is taxed as ordinary income.