His Company Stock Plan Paid Out the Day He Retired. Two Years Later, Medicare Moved Him Into a Higher Bracket.

A 65-year-old signs his retirement paperwork on a Friday. The following Monday, his employer’s Employee Stock Ownership Plan (ESOP) distributes roughly $220,000 in cash directly to him instead of rolling it into an IRA. That taxable distribution lands on his 2024 Form 1040 alongside a partial year of wages, a pension payout, and the taxable portion of his first Social Security checks, pushing joint modified adjusted gross income (MAGI) to approximately $300,000.

Two years later, the Medicare premium notice arrives. His Part B bill shows $405.80, exactly double the standard $202.90 he expected, and his wife’s premium matches. The Income-Related Monthly Adjustment Amount (IRMAA) affects roughly 8% of Medicare beneficiaries, but retirement years are especially capable of producing it. An ESOP distribution, pension lump sum, deferred-compensation payment, or employer-stock election can compress years of income into one tax return.

The Two-Year Lookback Is the Trap

Medicare generally uses the tax return filed two years before the premium year. A 2024 return sets 2026 Part B and Part D premiums. That is why a taxable ESOP payout at retirement can be so punishing: the retiree gets one calendar year to manage the income spike, and the distribution election may have been made months earlier.

MAGI for IRMAA is adjusted gross income (AGI) from Form 1040 plus tax-exempt interest. Municipal bond income that feels “tax-free” still counts. An ESOP distribution taken as cash and not rolled over generally enters ordinary income in the distribution year. A qualifying Net Unrealized Appreciation election works differently. The stock’s cost basis generally enters ordinary income when distributed, while the appreciation is deferred until the shares are sold. Only then does that portion enter AGI as a long-term capital gain.

What Each Bracket Actually Costs in 2026

The standard 2026 Part B premium is $202.90, up $17.90 from $185.00 in 2025. The Part B deductible is $283. Above the first threshold, the surcharge stacks on top.

For the couple pushed into the $274,001-to-$342,000 bracket by an ESOP payout, the additional Part B cost is $202.90 per month per person. Doubled for the household and annualized, that comes to roughly $4,870 for the year, plus another $900 in Part D surcharges.

IRMAA is recalculated annually. If the couple’s 2025 income returned to normal, that cleaner return should lower their 2027 premiums, making this a one-year hit unless they continue generating income above the thresholds.

SSA-44 May Still Help After Retirement

Form SSA-44 allows a beneficiary to request an IRMAA recalculation after certain life-changing events, including marriage, divorce, death of a spouse, work stoppage, work reduction, loss of pension income, loss of income-producing property beyond the owner’s control, or a qualifying employer settlement.

The ESOP payout itself is not a qualifying event. Retirement is. If his income fell substantially after he stopped working, he can ask Social Security to use a more recent tax return or MAGI estimate. SSA evaluates the entire replacement-year income figure. It does not simply remove the ESOP distribution from 2024.

If the newer MAGI falls below an IRMAA threshold, the surcharge may shrink or disappear. If another pension distribution, Roth conversion, or stock sale keeps income elevated, the applicable surcharge remains.

What to Do

• Model the payout before retiring. Ask the ESOP administrator for the estimated taxable amount, available rollover choices, distribution timing, and company-stock basis. Have a CPA project MAGI before authorizing the transaction. If the household lands narrowly above a threshold, deferring a bonus, Roth conversion, or other discretionary income may pull it back below the line.
• Consider NUA if the plan can distribute employer stock in kind. A qualifying election generally taxes the cost basis as ordinary income upfront while deferring the appreciation until the shares are sold. Compare that option with a direct IRA rollover before the distribution occurs because rolling the stock into an IRA usually ends the opportunity to use NUA treatment later.
• If an IRMAA notice arrives after retirement, file SSA-44 using work stoppage as the qualifying event and provide the household’s full, more recent MAGI. Do not identify the voluntary ESOP payout as the life-changing event.

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