What is an HSA (Health Savings Account) and how does it work?

A Health Savings Account (HSA) is a triple-tax-advantaged savings account for healthcare expenses, available only to people enrolled in qualifying high-deductible health plans (HDHPs). It's one of the most powerful financial tools in the U.S. tax code — but underused because most people don't understand it.

The triple tax advantage:

1. Contributions are tax-deductible — reduces your taxable income (above-the-line deduction)
2. Growth is tax-free — interest, dividends, capital gains accumulate tax-free
3. Withdrawals for qualified medical expenses are tax-free — at any age, in any year

No other account in U.S. tax law has all three. Traditional 401(k)/IRA: tax-free in, taxed out. Roth 401(k)/IRA: taxed in, tax-free out. HSA: tax-free in AND tax-free out for medical purposes.

2026 contribution limits:

• Self-only HDHP coverage: $4,300/year
• Family HDHP coverage: $8,550/year
• Catch-up contribution (age 55+): Additional $1,000/year

Limits apply across all your HSAs combined (employer + personal). Excess contributions are taxed.

Eligibility requirements:

You must be enrolled in an HSA-qualified HDHP, which means:

• Minimum deductible: $1,650 self-only / $3,300 family (2026)
• Maximum out-of-pocket: $8,300 self-only / $16,600 family (2026)
• Plan must not pay any benefits before the deductible is met (with exceptions for preventive care)

You ALSO must:
- NOT be enrolled in any non-HDHP health coverage (e.g., spouse's PPO with low deductible)
- NOT be enrolled in Medicare (any part — including Part A only)
- NOT be claimed as a dependent on someone else's tax return
- NOT be enrolled in TRICARE
- NOT be receiving VA health benefits in the past 3 months (with some exceptions)

The Medicare interaction: Once you enroll in any part of Medicare (including premium-free Part A), you can no longer contribute to an HSA. This is why some people delay enrolling in Part A past age 65 to keep contributing — but check Social Security rules, since claiming Social Security benefits triggers automatic Medicare enrollment.

What HSA funds can pay for:

Qualified medical expenses include:
- Doctor visits, hospital stays, surgery
- Prescription medications and insulin
- Dental care (cleanings, fillings, orthodontia)
- Vision care (exams, glasses, contacts, LASIK)
- Mental health services
- Long-term care services and insurance premiums
- Medicare premiums (after age 65)
- Some over-the-counter medications (since CARES Act expanded coverage)
- Menstrual care products (since CARES Act)
- COBRA premiums
- Long-term care insurance premiums (limit varies by age)

Qualified medical expenses are defined broadly — see IRS Publication 502 for the full list.

What HSA funds CANNOT pay for tax-free:
- Cosmetic surgery (with rare medical-necessity exceptions)
- Health insurance premiums (with several exceptions: COBRA, Medicare, long-term care, unemployed)
- Gym memberships (unless prescribed for a specific medical condition)
- Vitamins and supplements (unless prescribed)
- Non-prescription medications (mostly — check current rules)

What if you withdraw for non-qualified expenses?
- Before age 65: Income tax PLUS 20% penalty
- After age 65: Income tax only (no penalty) — works like a traditional IRA for non-medical use

This is why HSAs are sometimes called "the secret retirement account" — at 65, you can withdraw for any reason, paying only ordinary income tax (like a traditional IRA), AND continue to use it tax-free for medical expenses.

Investment options:

Most HSA providers offer:
- A core cash-equivalent option (savings, money market) — typically very low yield
- Investment options (mutual funds, ETFs) for balances above a minimum (often $1,000–$2,000)

Optimal HSA strategy for many people: contribute the max, invest balance in low-cost index funds, pay current medical expenses out of pocket from regular income, save medical receipts, and reimburse yourself decades later (no time limit on reimbursing past expenses as long as the HSA was active when the expense occurred).

Choosing an HSA provider:

• Employer-sponsored HSA: Usually through Optum, HealthEquity, Lively, Fidelity, or similar. May have employer contributions (free money — always max out at minimum to capture employer match).
• Personal HSA: Anyone with an HDHP can open an HSA at Fidelity, Lively, HealthEquity, or many banks. Fees vary; some are free.
• Switch providers anytime. You can transfer HSA funds between providers without tax consequence (within 60 days for indirect rollovers, unlimited for direct trustee-to-trustee transfers).

HSA + ACA strategy for self-employed:

1. Pick a Bronze HSA-eligible Marketplace plan
2. Contribute the maximum $4,300 (self-only) or $8,550 (family) to HSA
3. HSA contribution lowers your MAGI, which can INCREASE your ACA premium subsidy (double tax benefit)
4. Pay current medical expenses out of regular cash; let HSA grow tax-free for retirement
5. At 65: HSA becomes a flexible retirement account + you can pay Medicare premiums tax-free from it

Common mistakes:

• Not max-funding when you could afford to
• Letting HSA sit in cash earning 0.1% instead of investing
• Not saving medical receipts (limits future tax-free withdrawals to current-year expenses)
• Not knowing about the spouse-HSA option for couples (each spouse can have their own HSA if both have HDHP coverage)
• Enrolling in Medicare without realizing it kills HSA contributions

What to do next: Call (866) 534-1886. We help structure HSA-paired ACA Marketplace plans, time HSA contributions to maximize ACA subsidy, and plan the Medicare-HSA transition at 65. Free.