Health Savings Accounts in Retirement: An Ohio Strategy Guide

The health savings account is the only account in the tax code that can go in untaxed, grow untaxed, and come out untaxed. Not a Roth. Not a 401(k). And yet most people we meet in Greene and Montgomery counties have treated theirs like a checking account — spending it down every December on glasses and dental work while it could have been the most valuable dollar they own in retirement.

If you are still working at Wright-Patterson, at GE Aviation, at a hospital system, or anywhere else with a high-deductible plan, and you are somewhere in your late fifties or early sixties, this is the window that matters. It closes for good the month Medicare starts.

The Account Ohio Retirees Underuse

An HSA gets three tax breaks stacked on top of each other. Contributions are deductible on your federal return. The money grows tax-deferred. And withdrawals for qualified medical expenses come out entirely tax-free, at any age, with no required distributions ever.

There is an Ohio wrinkle worth knowing: Ohio’s individual income tax starts from your federal adjusted gross income. Because HSA contributions reduce federal AGI, the deduction carries down onto your Ohio return automatically — you do not claim it twice, and you do not have to do anything to get it.

Compare that to a traditional IRA, where every dollar you pull out in retirement is ordinary income and, starting at 73, you are forced to pull it whether you want to or not. Health care is going to be one of your largest retirement expenses. An HSA is the only account designed to meet that expense with untaxed money.

The 2026 Contribution Rules

To contribute to an HSA, you have to be covered by a qualifying high-deductible health plan on the first day of the month, have no other disqualifying coverage, and not be enrolled in Medicare.

For 2026, a plan qualifies as a high-deductible health plan if the annual deductible is at least 1,700 dollars for self-only coverage or 3,400 dollars for family coverage, and annual out-of-pocket costs — deductibles, copays, and similar amounts, but not premiums — do not exceed 8,500 dollars self-only or 17,000 dollars family.

The 2026 contribution limits are:

• 4,400 dollars with self-only HDHP coverage
• 8,750 dollars with family HDHP coverage
• Plus a 1,000 dollar catch-up contribution once you reach age 55

One detail people get wrong: the catch-up belongs to the individual, not the household. If both spouses are 55 or older, each one needs their own HSA to claim their own 1,000 dollars. A married couple where only one spouse has an account leaves 1,000 dollars a year on the table, every year, for as long as the situation lasts.

Medicare Ends Contributions Entirely

Here is the sentence to write down: beginning with the first month you are enrolled in Medicare, your HSA contribution limit is zero.

Any part of Medicare. Part A alone does it. Many people assume that because Part A is premium-free for most workers, enrolling is harmless — it is not harmless if you have an HSA. The month Part A starts, your ability to contribute stops.

Note the wording carefully: the limit is zero, not prorated for the year. If you are Medicare-enrolled for part of 2026, your limit for the months you were eligible is calculated month by month, and you need to make sure the total you actually contributed does not exceed it. Contributing past that point creates an excess contribution, which comes with its own tax and has to be corrected.

You can still spend from the HSA after Medicare starts. In fact retirement is when the account earns its keep. You just cannot put new money in.

The Six-Month Lookback Trap

This is the one that costs people real money, and almost nobody sees it coming.

If you apply for Medicare Part A more than six months after turning 65, your Part A coverage is made retroactive for six months — though never earlier than the month you turned 65. The same thing happens when you file for Social Security benefits after 65, because filing for Social Security enrolls you in Part A.

The consequence: contributions you made during that retroactive window become excess contributions after the fact. You did nothing wrong at the time. The rule reached backward and made them wrong.

Social Security’s own guidance is blunt about the fix — you and your employer should stop contributing to your HSA six months before you retire or apply for Social Security or Medicare benefits.

So the practical rule for someone working past 65 in the Miami Valley: pick your Medicare or Social Security filing date first, count back six months, and stop HSA contributions on that date — including any payroll contribution your employer is making on your behalf. Tell HR. They will not track this for you.

What Turning 65 Changes

Two things change at 65, and they pull in opposite directions.

The penalty goes away

Before 65, an HSA withdrawal used for something other than a qualified medical expense is included in your income and hit with an additional 20 percent tax. After you turn 65, that additional 20 percent no longer applies.

What that means practically: after 65 your HSA behaves like a traditional IRA for non-medical spending — taxable as ordinary income, but no penalty — while still being completely tax-free for qualified medical expenses. It becomes the most flexible account you have. Medical spending is free; everything else is merely taxed.

The contribution window may close

At the same time, most people enroll in Medicare at 65, and that ends contributions permanently. So 65 is when the account becomes most useful and stops growing from new deposits. Everything after that is investment growth and disciplined spending.

What an HSA Can Pay For in Retirement

Once you are 65 or older, HSA dollars can pay tax-free for:

• Medicare Part B premiums
• Medicare Part D premiums
• Medicare Advantage plan premiums
• Medicare Part A premiums, if you are among the few who pay them
• Your share of premiums for employer-sponsored coverage
• Deductibles, copays, coinsurance, dental, vision, and hearing costs
• Qualified long-term care insurance premiums, up to an annual limit that depends on your age — the limit is adjusted each year, so look up the current figure on IRS.gov before you count on a number

And the one exception that catches everyone:

You cannot use HSA money for Medigap premiums. Medicare supplement policies are specifically excluded. If you are on Plan G or Plan N, that premium comes out of after-tax dollars. A Medicare Advantage premium, on the other hand, is eligible.

That is not a reason by itself to pick one over the other — networks, drug coverage, and your own doctors matter far more. But if you are already torn between a supplement and an Advantage plan and you are sitting on a large HSA, it belongs in the calculation.

A Beavercreek Worked Example

Say Jim is 63, still working, covered by his employer’s family high-deductible plan, and his wife Carol is 61 and covered under the same plan.

Contributions for 2026: the family limit is 8,750 dollars. Jim is over 55, so he can add his own 1,000 dollar catch-up in his own HSA — 9,750 dollars for the household. Carol turns 55 in 2028; from that year forward she can add 1,000 dollars in an account in her name.

The timing: Jim turns 65 in October 2026 and plans to file for Social Security in March 2027. Because he is filing more than six months after turning 65, Part A will be backdated six months — to September 2026. Every dollar he or his employer put into the HSA from September 2026 onward would be an excess contribution. He needs to stop contributions in August 2026, not March 2027.

The payoff: Jim retires with 60,000 dollars in the HSA. In 2026 the standard Part B premium is 202.90 dollars a month — about 2,435 dollars for the year. He can pay that entirely from the HSA, tax-free, instead of pulling roughly 3,000 dollars from an IRA and paying federal and Ohio income tax on it to net the same amount. Add the 283 dollar Part B deductible, dental work, and hearing aids, and the account handles several thousand dollars a year of spending that would otherwise be taxable.

What Ohio Savers Should Do Now

1. Stop spending it if you can afford to. Pay routine medical bills out of pocket and let the HSA compound. Save every receipt — there is no deadline for reimbursing yourself for an expense you already paid.
2. Invest the balance. Most HSAs default to cash. If you have a decade before you will need it, cash is a real cost.
3. Open an account for the younger spouse. If you both will hit 55, you both need accounts to capture both catch-ups.
4. Mark your six-month date. Work backward from when you will file for Medicare or Social Security and put it on the calendar.
5. Name a beneficiary — and understand it. A spouse can inherit an HSA as their own. A non-spouse beneficiary generally cannot; the account stops being an HSA and the value becomes taxable to them.

Talk It Through Locally

The HSA-to-Medicare handoff is one of the few retirement decisions where a small timing mistake produces a specific, avoidable tax bill. It is worth an hour with somebody who has walked other people through it.

Medicare & Retirement Solutions Group is in Beavercreek, and we work with retirees and pre-retirees across the Dayton area on exactly this kind of coordination — when to file, when to stop contributing, and how the pieces fit together. The consultation is free. Give us a call or reach out through medretiregroup.com, and bring your HSA statement and your best guess at a retirement date.

This article is general educational information, not individualized tax, insurance, or investment advice. Rules and figures change and individual circumstances vary — please confirm details with your plan, or speak with a qualified professional, before acting.