Taxes

By the Retiree Report Editorial Team · Updated 2026-05-23 · 6 min read

This article is general information, not medical advice. Talk with a licensed clinician before making any decision about your care.

Are Medicare premiums tax deductible? The rule self-employed retirees keep getting wrong

Most people on Medicare write a check for Part B every month and assume the cost is buried somewhere on their tax return. It usually isn’t — at least not in a way that actually saves them money. But if you have even modest self-employment income in retirement (consulting, a side gig, a small LLC), a separate rule lets you deduct every dollar of your Medicare premiums above the line. No itemizing, no 7.5% threshold, no hoops.

Who actually gets to deduct Medicare premiums?

Two different deductions are at stake here, and they don’t work the same way at all.

The first one — the standard medical expense deduction — is the one most retirees vaguely remember. You can list Medicare Part B, Part D, Medicare Advantage, and Medigap premiums alongside doctor bills, prescriptions, dental work, and hearing aids on Schedule A. The problem is the 7.5% floor. According to IRS Topic 502, only the portion of your medical costs that exceeds 7.5% of your adjusted gross income counts. You also have to itemize, which in 2026 means clearing a standard deduction of $16,100 for a single filer or $32,200 for joint filers — plus an extra $2,050 (single) or $1,650 per spouse (joint) once you’re 65 or older. Most retirees hit none of that.

The second deduction — and the one in the headline — is the self-employed health insurance deduction. If you had any net profit from self-employment in the year, you can usually deduct your Medicare premiums on Schedule 1, line 17 of Form 1040, and the deduction flows straight to your AGI. You don’t need to itemize. There’s no 7.5% threshold. The math doesn’t care if your premiums are $2,500 or $9,000.

That’s the rule self-employed retirees keep missing.

What counts as “self-employed” for this?

The IRS bar is lower than people think. You qualify if you had a net profit on Schedule C, were a general partner with self-employment earnings on a Schedule K-1, used one of the optional methods on Schedule SE, or owned more than 2% of an S corporation that paid you wages. A retired carpenter who picks up the occasional remodel, a former teacher tutoring two students a week, a consultant taking one project a year — any of them can be eligible.

But the IRS attaches a few important strings.

The plan has to be “established under your business.” For sole proprietors, the Form 7206 instructions confirm that Medicare itself counts — you don’t need a fancy corporate plan, because the premiums are paid in your name to obtain qualifying health insurance. For S corp owner-employees with more than 2% of the stock, the rules are stricter. According to the IRS guidance for S corporations, the corporation must either pay the Medicare premiums directly or reimburse you, and the amount has to be reported as wages in Box 1 of your W-2 (though it’s exempt from Social Security and Medicare tax in Boxes 3 and 5). Skip that W-2 reporting step and the deduction can be disallowed.

You can’t double-dip either. If you — or your spouse — were eligible for a subsidized health plan from any employer during a given month, that month is off the table, even if you didn’t enroll. Eligibility alone is the disqualifier.

How much can you actually deduct in 2026?

Almost every Medicare premium qualifies. That includes the standard Part B premium ($202.90 a month in 2026, per CMS, up from $185 in 2025), Part D drug plans, Medicare Advantage (Part C) premiums, Medigap premiums, and Part A premiums in the rare case you have to pay them. Surcharges count too. If you owe an income-related monthly adjustment amount because your 2024 modified adjusted gross income topped $109,000 single or $218,000 joint, those IRMAA dollars are fully deductible alongside the base premium. (We walked through that surcharge math in our IRMAA 2026 brackets guide.)

Here’s a concrete example. Say you’re 67, semi-retired, and netted $24,000 consulting last year. Your spouse is also on Medicare. Between the two of you, the year’s premiums add up like this:

• Two standard Part B premiums at $202.90 a month: $4,869.60
• Two Part D plans averaging $45 a month: $1,080
• Two Medigap Plan G policies at $180 a month each: $4,320

Total: $10,269.60. Every penny is deductible on Schedule 1, line 17. At a 22% marginal federal rate, that knocks roughly $2,260 off your federal tax bill — before any state savings. And because it lowers your AGI, it can also trim what you owe in state income tax, how much of your Social Security is taxable, and where you land on next year’s IRMAA brackets.

One ceiling applies, though. The deduction can’t exceed the net earnings from the business that established the plan. If your consulting netted $7,000, your premium deduction tops out at $7,000 — the remaining $3,270 doesn’t disappear, but it spills over to Schedule A, where it has to clear the 7.5% AGI floor like every other medical bill.

What about the itemized route everyone else uses?

If you have no self-employment income, you’re stuck with Schedule A. The math is brutal for most retirees. Take a 70-year-old single filer with $60,000 of AGI. Her medical floor is $4,500 — 7.5% of her income. Suppose her Medicare premiums plus other out-of-pocket health costs add up to $7,000 for the year. She can deduct $2,500, and only if her total itemized deductions clear $18,150 (her $16,100 standard deduction plus the $2,050 senior add-on). With no mortgage and modest state taxes, they almost certainly won’t.

One new wrinkle is worth knowing. For tax years 2025 through 2028, the IRS confirmed a temporary $6,000 bonus deduction for filers age 65 and older ($12,000 for couples where both spouses qualify). It phases out 6% above $75,000 of modified AGI for singles and $150,000 for joint filers. The bonus doesn’t change the medical deduction math directly, but it raises the bar that itemizing has to beat, which pushes more retirees toward the standard deduction.

Does that mean the medical deduction is dead? Not quite. It still helps after a high-cost year — a long hospital stay, a stretch in assisted living that qualifies as medical care, major dental work. For routine retirees in routine years, it rarely moves the needle.

What to do next

If you have any self-employment income, pull last year’s return and look at Schedule 1. Did you (or your accountant) claim the Medicare premium deduction on line 17? If not, you can amend the return on Form 1040-X going back three years. Bring your SSA-1099 (which shows the Part B premium Medicare withheld from your Social Security check) along with documentation of any Part D, Medigap, or Advantage premiums you paid out of pocket.

For 2026, set up a simple folder — paper or digital — that captures every Medicare premium notice as it arrives. Add your spouse’s premiums to the same folder. When you file Form 7206 in early 2027, you’ll have a single running tally. If you’re an S corp owner, talk to your payroll provider now about getting your Medicare premiums on next year’s W-2; that reporting has to happen during the year, not at tax time.

This is also a reasonable conversation to have with a tax preparer rather than a Medicare agent. Medicare brokers don’t give tax advice, and most consumer tax software won’t surface the deduction unless you know to look for it. If you’re sorting through other write-offs at the same time, our piece on tax deductions seniors often miss in 2026 covers the ones that pair naturally with this one.

What to remember

The self-employed health insurance deduction is one of the few above-the-line ways to write off Medicare premiums without itemizing or clearing the 7.5% AGI floor — and it covers Part A, B, C, D, Medigap, and any IRMAA surcharge you owe. It’s capped at your net self-employment earnings, and it’s blocked for any month you or your spouse could have joined a subsidized employer plan. If you have side income in retirement and you’re not claiming it, you’re handing the IRS money you don’t actually owe.