The HSA: The Best Retirement Account That Isn’t Called One

Here’s the thing about Health Savings Accounts. Most people who have one treat it like a debit card for the pharmacy. Money goes in, a prescription comes out, end of story.

And that’s fine. It’s not wrong. But it’s a little like buying a pickup truck and only using it to drive to the mailbox.

An HSA is one of the very few places where the IRS gives you a break going in, a break while it grows, and a break coming out. That doesn’t happen often. So, let’s walk through how it works, who can use one (that list just got longer), what the limits are for 2026 and 2027, and a few catches worth knowing before you turn 65.

What Is an HSA, and Why Does Everyone Call It “Triple Tax-Free”?

An HSA is a savings account that sits alongside a high-deductible health plan. You put money in, and you use it for qualified medical expenses: doctor visits, prescriptions, dental work, glasses, that kind of thing.

The “triple tax” part is where it gets interesting:

1. Money goes in pre-tax. Contribute through payroll, and it skips federal income tax and Social Security and Medicare taxes too. A lot of people don’t realize that second part. Your 401(k) can’t even do that!
2. It grows tax-free. Most HSAs let you invest the balance instead of just parking it in cash.
3. It comes out tax-free, as long as you spend it on qualified medical expenses.

So, what does that actually mean for you? A traditional 401(k) gets you two of those three. A Roth IRA gets you two of those three. An HSA gets all three. The trade-off is that it’s for one category of spending. The good news is that it’s a category nobody ages out of.

One more thing. An HSA is not use-it-or-lose-it. That’s the FSA, its cousin with the stricter rules. HSA money rolls over every year, and it stays yours if you change jobs.

Who Can Actually Open One?

The official rule: you need to be covered by an HSA-eligible high-deductible health plan, you can’t have other disqualifying health coverage, you can’t be enrolled in Medicare, and nobody can be claiming you as a dependent.

For 2027, “high-deductible” means a deductible of at least $1,750 for self-only coverage or $3,500 for family coverage. For 2026, it was $1,700 and $3,400.

Now, here’s the good news. The One Big Beautiful Bill Act, signed in July 2025, widened the door starting this year:

• Bronze and catastrophic plans now count. Before, many of them didn’t fit the IRS definition of a high-deductible plan, which is a little funny, since a bronze plan is about as high-deductible as it gets. By one estimate, that opens HSAs to roughly 7.5 million people who couldn’t contribute before.
• Direct primary care is allowed. If you pay your doctor’s office a flat monthly membership fee, that no longer knocks you out of HSA eligibility, as long as the fee stays at or under $150 a month for an individual or $300 for a family. You can even pay that fee from the HSA.
• Telehealth is permanently fine. A plan can cover virtual visits before you hit your deductible without costing you HSA eligibility. That used to be a temporary fix Congress kept extending, one deadline at a time.

So if you were told a few years ago that your plan “didn’t qualify,” it’s worth asking again. Choosing the health plan itself is a conversation for your benefits department. Where we come in is what you do with the account once you have it.

How Much Can You Put In?

$4,500. That’s the most an individual can put in for 2027, up $100 from this 2026. Families can put in $9,000, up $250.

Contribution limit               2026                2027
Self-only coverage               $4,400              $4,500
Family coverage                   $8,750               $9,000
Catch-up (age 55+)              $1,000                $1,000

Two catches. First, employer contributions count toward the limit. If your company puts in $1,000 on a 2027 self-only plan, you have $3,500 of room left, not $4,500.

Second, the catch-up. If you’re 55 or older, you can add another $1,000. That number has been $1,000 since 2009. Just about everything else in the tax code gets an inflation adjustment; the HSA catch-up apparently missed the memo. And if you’re married and both 55 or older, you can each do one, but each of you needs your own HSA to hold it.

A timing note, since we’re heading into the last two months of the year you have until the tax-filing deadline in April 2027 to finish your 2026 contributions. So, if you haven’t maxed out 2026 yet, you’re not out of time.

Spend It or Save It? The Shoebox Strategy

Here’s where a lot of people leave money on the table.

You’re allowed to pay a medical bill out of pocket today and reimburse yourself from the HSA later. And there’s no deadline on “later.” As long as the expense happened after you opened the HSA, you can pay yourself back next year, in ten years, or in retirement.

So some people do it this way. Pay the urgent care bill from regular cash flow, put the receipt in a shoebox (or, more realistically, a folder on your phone), and leave the HSA invested. Twenty years from now, that shoebox is a stack of tax-free withdrawals you can take whenever you want. Having raised (and still raising) three kids myself, I can tell you the shoebox fills up faster than you’d think.

Is that right for everyone? That’s a cash-flow question. If paying medical bills out of pocket squeezes the budget, use the HSA for what it’s for. There’s no prize for making things harder on yourself. But if you can let it ride, the HSA can quietly become one of the most tax-efficient pots of money you own.

One practical note: check whether your HSA actually lets you invest, and what it charges to do it. Some keep everything in cash by default, earning roughly what a mattress does. You’ll likely have to go into your account once your contributions begin to actually invest the money.

The Fine Print: Age 65, Medicare, and Your Heirs

A few rules tend to catch people off guard.

Before 65, using HSA money for something that isn’t a qualified medical expense means income tax plus a 20% penalty. That’s a steep price for a new TV.

After 65, the penalty goes away. Non-medical withdrawals are taxed as ordinary income, basically like a traditional IRA, and medical withdrawals are still tax-free. That’s why you’ll hear people call the HSA a retirement account in disguise.

Medicare ends contributions. Once you’re enrolled in any part of Medicare, no new money goes in. And here’s the catch inside the catch: if you sign up for Medicare after 65, Part A coverage can be backdated up to six months. Contributions made during that window can turn into excess contributions. So if you’re working past 65 and planning to enroll later, stop contributing about six months before you sign up. Nobody sends you a reminder about this one.

You can keep spending the money, though, including on Medicare Part B and Part D premiums. Medigap premiums don’t count.

Who inherits it matters. If your spouse is the beneficiary, it simply becomes their HSA. If it’s anyone else, say your kids, the whole balance becomes taxable income to them in the year they inherit it. So it often makes sense to spend the HSA down during your lifetime and leave other assets to the next generation. That’s something to keep in mind the next time you review your beneficiaries.

So, Should You Be Using One?

It depends. That’s the honest answer. It depends on your health, your plan options, your cash flow, and how close you are to Medicare. But if you’re eligible, here’s how I’d think about it:

• Contribute what you can, ideally through payroll, so you pick up the Social Security and Medicare tax savings too.
• If the budget allows, invest the balance, pay smaller bills out of pocket, and keep the receipts.
• If you’re 55 or older, don’t forget the extra $1,000.
• If Medicare is on the horizon, plan your last contribution on purpose.

And again, we don’t know what future Congresses will do with these rules. This year happened to bring good news for HSAs. That’s not a promise about the next one. Staying up to date on the changing laws is always a good idea, and is what we’re here for.

At the end of the day, an HSA works best when it’s part of the whole plan, not an afterthought on your benefits enrollment form. If you’d like to see where it fits alongside your 401(k), your IRA, and everything else, we’re happy to talk it through. You can reach our team at financialgroup.com/contact-us.