The Most Misused Account in Your Financial Life
If you have a high-deductible health plan, you have an HSA. And there's a good chance you're treating it like a checking account with a medical theme, which is a little like finding a winning scratch ticket and using it as a bookmark.
If you have the cash flow to cover your current medical expenses out of pocket, then the HSA becomes something else entirely. Arguably the single most powerful investment vehicle available to you. Yes, including the Roth.
The Only Triple Tax Account in Existence
Every other account gets taxed somewhere. The 401K taxes you on the way out. The Roth taxes you on the way in. The HSA? None of the above.
Contributions go in tax-free, lowering your taxable income today. The investments inside grow without the IRS taking a cut. And when you pull the money out for qualified medical expenses, that's tax-free too. No other account in the country does all three. Not one.
The Shoebox Strategy
Here's where it gets interesting and where most people leave serious money on the table.
There's no time limit on when you have to reimburse yourself for a medical expense. None. So instead of pulling $2,000 out of your HSA to pay a medical bill today, you pay it from your checking account and save the receipt. Digital folder, actual shoebox, Notes app, whatever works. That $2,000 stays invested inside your HSA.
Twenty years later, that $2,000 has potentially grown to $8,000. You pull out the original $2,000 tax-free reimbursing yourself for that decade-old bill and leave the rest growing. You've essentially built a tax-free ATM that pays you back for expenses you already forgot about.
The receipts are the key. Keep them.
There are three rules and they’re not up for interpretation: you must keep records sufficient to show distributions were exclusively for qualified medical expenses, the expenses can't have been previously paid or reimbursed from another source, and the expenses must have been incurred after the HSA was established.
What Happens at 65
The HSA gets better with age, which isn't something you can say about most things.
For medical expenses, it stays completely tax-free forever. For everything else: a trip, a boat, whatever you want, the 20% early withdrawal penalty disappears entirely after 65. At that point it functions like a traditional 401K: you pay ordinary income tax on non-medical withdrawals, but with one key difference. Unlike a 401K, there are no required minimum distributions. The account doesn't force your hand.
Most people don't realize that last part until it's too late to do much about it.
If you're on a high-deductible plan and haven't thought through this, it's worth a conversation.
¹ IRS Publication 969 (2025) — irs.gov/publications/p969
Disclaimer: This content is for educational purposes only and does not constitute tax, legal, or investment advice. To contribute to an HSA, you must be enrolled in an HDHP. 2026 contribution limits are $4,400 for individuals, $8,750 for families and an additional $1,000 catchup contribution for those aged 55+. Consult a tax professional regarding qualified medical expenses and reimbursement documentation.