Do I Pay Medicare Tax After Retirement? Wages, IRMAA, and HSAs

Retirement does not end your Medicare tax obligation automatically. If you keep earning wages or self-employment income, you still pay Medicare tax after retirement at the standard 1.45% rate on every dollar, with no age cutoff and no wage cap. What changes is that most of what retirees actually live on — Social Security, pension checks, IRA and 401(k) withdrawals, annuity payments — is exempt from that payroll tax. The complication is that some of the same income streams that escape the payroll tax still push up your Medicare premiums through a separate surcharge.

Medicare Tax on Wages and Self-Employment After Retirement

Federal law imposes the 1.45% Medicare tax on the wages of “every individual,” with no exemption for retirees.1Office of the Law Revision Counsel. 26 USC 3101 – Rate of Tax Take a part-time job, return to consulting, or sit on a corporate board, and your employer withholds 1.45% from every paycheck and matches it with another 1.45%. Unlike Social Security, Medicare has no wage cap, so the tax hits your first dollar and your last.2Internal Revenue Service. Topic No. 751, Social Security and Medicare Withholding Rates

If you freelance or run a small business in retirement, you owe the full 2.9% because you cover both the employee and employer shares under the self-employment tax.3Office of the Law Revision Counsel. 26 USC 1401 – Rate of Tax The IRS expects quarterly estimated payments once you expect to owe $1,000 or more for the year.4Internal Revenue Service. Estimated Tax Miss those deadlines and a penalty accrues based on how much you underpaid and how long the shortfall lasted.5Internal Revenue Service. Underpayment of Estimated Tax by Individuals Penalty

One point catches self-employed retirees off guard. If you deduct your own health insurance premiums to lower adjusted gross income, that deduction does not reduce the earnings subject to the 2.9% self-employment Medicare tax.6Internal Revenue Service. Instructions for Form 7206 It looks like a business expense. For Medicare tax purposes, it isn’t.

The 0.9% Surtax for Higher Earners

An extra 0.9% Medicare surtax applies once your earned income passes $200,000 as a single filer or $250,000 for married couples filing jointly.7Internal Revenue Service. Topic No. 560, Additional Medicare Tax Married couples filing separately hit the surtax at $125,000 each.8Internal Revenue Service. Questions and Answers for the Additional Medicare Tax For a high-earning self-employed retiree, the combined rate above the threshold is 3.8%. The statute fixes these numbers with no inflation adjustment, so more retirees cross them each year.

Retirement Income That Is Exempt from Medicare Payroll Tax

The 1.45% and 2.9% Medicare taxes apply only to earned income. The main sources of retirement income sit outside that definition:

  • Social Security benefits are entirely exempt from Medicare payroll tax. A portion may be subject to regular federal income tax depending on your total income, but the payroll levy never applies.
  • Traditional IRA and 401(k) withdrawals are treated as deferred compensation, not wages. No Medicare payroll tax is withheld.
  • Pension payments from a former employer’s defined-benefit plan are not subject to Medicare tax.
  • Qualified Roth IRA distributions are tax-free and carry no Medicare payroll tax.
  • Annuity payments from a private annuity are treated as investment returns rather than earned income.

That is genuinely good news for the payroll tax question. But most of the same distributions still show up in the calculation Medicare uses to set your premiums, so the money you avoid on the withholding line can come back on the premium line.

Retirement Income Can Still Raise Your Medicare Premiums

The Income-Related Monthly Adjustment Amount, known as IRMAA, is a surcharge added to Medicare Part B and Part D premiums when your income exceeds certain thresholds. The standard Part B premium in 2026 is $202.90 per month, and IRMAA can more than triple that figure at the top brackets.9Centers for Medicare & Medicaid Services. 2026 Medicare Parts A and B Premiums and Deductibles

The Social Security Administration bases IRMAA on the tax return from two years earlier. Your 2026 premium is set from your 2024 modified adjusted gross income.10Social Security Administration. Form SSA-44, Medicare Income-Related Monthly Adjustment Amount – Life-Changing Event Traditional IRA and 401(k) distributions, pension income, and the taxable portion of Social Security all count toward that MAGI figure. Qualified Roth IRA withdrawals do not.

2026 Part B Surcharge Brackets

The monthly Part B surcharge amounts for 2026 are:9Centers for Medicare & Medicaid Services. 2026 Medicare Parts A and B Premiums and Deductibles

  • Up to $109,000 single or $218,000 joint: no surcharge, standard $202.90 premium.
  • $109,001–$137,000 single or $218,001–$274,000 joint: extra $81.20 per month ($284.10 total).
  • $137,001–$171,000 single or $274,001–$342,000 joint: extra $202.90 per month ($405.80 total).
  • $171,001–$205,000 single or $342,001–$410,000 joint: extra $324.60 per month ($527.50 total).
  • $205,001–$499,999 single or $410,001–$749,999 joint: extra $446.30 per month ($649.20 total).
  • $500,000 or more single or $750,000 or more joint: extra $487.00 per month ($689.90 total).

Part D prescription drug coverage uses the same income brackets and adds its own surcharge on top, ranging from $14.50 per month at the first tier to $91.00 per month at the highest.11Social Security Administration. Benefits Planner: Retirement, Medicare Premiums A single retiree at the top bracket pays roughly $6,936 per year in combined Part B and Part D surcharges above the standard premiums. For a married couple where both spouses are enrolled, double it.

Appealing IRMAA After Retirement

Because IRMAA looks back two years, the surcharge often reflects a working income that no longer exists. You can ask SSA to use more recent income if you have had a qualifying life-changing event.12Social Security Administration. Request to Lower an Income-Related Monthly Adjustment Amount (IRMAA) Qualifying events include:

  • Marriage, divorce or annulment, or death of a spouse.
  • Retirement or a significant reduction in work hours.
  • Loss of income-producing property through disaster, theft, or foreclosure.
  • Loss of pension income from plan termination or restructuring.
  • An employer settlement payment that inflated the lookback year and will not recur.

You file Form SSA-44 with documentation such as a death certificate, divorce decree, or letter from a former employer.10Social Security Administration. Form SSA-44, Medicare Income-Related Monthly Adjustment Amount – Life-Changing Event Retirees whose two-year-old return reflected a one-time spike, such as a business sale or a large Roth conversion, often miss this option and pay a full year of maximum surcharges they could have avoided.

Keeping Your Medicare-Related Costs Down

Because IRMAA is driven by modified adjusted gross income, you have some control over whether it triggers.

A Qualified Charitable Distribution moves money directly from a traditional IRA to a qualifying charity. The transfer satisfies your required minimum distribution but stays out of taxable income and out of MAGI. For 2026 the limit is $111,000 if you are at least 70½.13Internal Revenue Service. Notice 25-67, 2026 Amounts Relating to Retirement Plans and IRAs If you already give to charity, routing donations through a QCD instead of writing a check is one of the simplest ways to hold IRMAA down.

Qualified Roth IRA withdrawals do not count toward MAGI at all. Retirees who converted traditional balances to a Roth before required minimum distributions began can later draw on those accounts without lifting themselves into a higher IRMAA bracket. The conversion itself is taxable in the year it happens, so it works best when spread across lower-income years.

Timing large sales matters. Selling a rental property, exercising stock options, or liquidating a business in a single year can push MAGI into the top bracket two years later. Spreading transactions across multiple tax years, when the deal structure allows it, keeps any one year from triggering the maximum surcharge.

A separate 3.8% Net Investment Income Tax applies to interest, dividends, capital gains, rental income, and royalties above the same $200,000 single or $250,000 joint MAGI thresholds used for the Additional Medicare Tax.14Internal Revenue Service. Questions and Answers on the Net Investment Income Tax It is not a payroll tax, but it hits the investment income many retirees live on, so the same year-to-year timing choices that manage IRMAA also manage NIIT exposure.

The HSA Trap After Medicare Enrollment

One boundary worth naming, because retirees regularly stumble into it: once you enroll in any part of Medicare, your Health Savings Account contribution limit drops to zero.15Internal Revenue Service. Publication 969, Health Savings Accounts and Other Tax-Favored Health Plans You can still spend the existing balance tax-free on qualified medical expenses, but new contributions become excess contributions subject to a 6% excise tax for each year they remain in the account.16Office of the Law Revision Counsel. 26 US Code 4973 – Tax on Excess Contributions to Certain Tax-Favored Accounts and Annuities

The trap sharpens because Medicare Part A can apply retroactively for up to six months after you turn 65. If you delay enrolling and later sign up, any HSA contributions you made during those retroactive months are reclassified as excess contributions, even though you made them believing you were still eligible.15Internal Revenue Service. Publication 969, Health Savings Accounts and Other Tax-Favored Health Plans To avoid the penalty, withdraw the excess and any earnings before your tax return due date, including extensions. Continuing to contribute past 65 generally requires delaying Medicare enrollment entirely, which is only practical if you have creditable employer coverage.