How to Use an HSA for Retirement (The Stealth IRA)

A Health Savings Account (HSA) is best known for medical bills, but used deliberately it can be the most tax-efficient retirement account you have. It's the only account with a triple tax advantage: money goes in pre-tax, grows tax-free, and comes out tax-free for qualified medical expenses. Here's how to turn an HSA into a "stealth IRA."

Who can use one

You can contribute to an HSA only while covered by an HSA-eligible high-deductible health plan (HDHP). Contribution limits are set annually by the IRS (see IRS Publication 969), with an extra catch-up amount allowed at 55 and older. Browse our directory's HSA resources for the current rules.

The stealth-IRA strategy

1. Contribute the max while you're HDHP-eligible.
2. Invest the balance instead of leaving it in cash — many HSAs let you invest in index funds. Model the growth with our compound-interest calculator.
3. Pay current medical bills out of pocket if you can, and save the receipts. There's no deadline to reimburse yourself, so the invested HSA keeps compounding tax-free.
4. Reimburse yourself years later — tax-free — using those saved receipts, effectively pulling money out with no tax at all.

What happens at 65

After 65 you can withdraw HSA money for any reason and pay only ordinary income tax — just like a Traditional IRA — while medical withdrawals stay tax-free. That flexibility is why an HSA slots neatly beside your other accounts. See how it fits an overall plan with how much do you need to retire, and compare account types in our Roth guide.

Common questions

Is an HSA better than a Roth IRA?

They do different jobs. For medical costs an HSA is unbeatable (tax-free in and out); a Roth is broader. Many people use both.

Can I invest my HSA?

Most providers let you invest above a small cash minimum — that's what makes the long-term strategy work.

Sources

• IRS Publication 969 — HSAs

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