For Medicare MAGI, tax-exempt interest gets added back to AGI. Municipal bond income that feels tax-free still counts. So do taxable Social Security benefits, traditional individual retirement account withdrawals and pension payments. Assume this couple ordinarily has MAGI of about $80,000. Add $328,000 of taxable home-sale gain and their 2026 figure reaches approximately $408,000.

What the 2028 Premium Looks Like

IRMAA generally uses a two-year lookback, so 2026 income drives 2028 Part B and Part D costs. The 2028 brackets and premium amounts have not been published. The current 2026 schedule shows where a $408,000 joint MAGI would land under today’s rules:

For two people over twelve months, the higher bracket adds $9,240 to the household’s Medicare costs compared with a couple below the first IRMAA threshold. A little more income makes the result steeper. If their joint MAGI moves above $410,000 under the 2026 schedule, the total Part B premium reaches $649.20 per person each month and the Part D surcharge rises to $83.30. IRMAA is only one of the surcharges retirees walk into without warning; we mapped the rest in a free Medicare guide.

Why SSA-44 Will Not Rescue This Sale

Form SSA-44 can reduce IRMAA when income falls following an approved life-changing event, such as marriage, divorce, the death of a spouse, retirement, reduced work or loss of pension income. A voluntary home sale is not on that list. Neither is a Roth conversion.

The relief comes from the calendar. IRMAA is recalculated every year. If the couple’s 2027 MAGI returns to its usual level, their 2029 Medicare premiums can return to the standard amount. The home sale creates a one-year surcharge, not a penalty for life. That distinction matters when the 2028 notice arrives. The couple cannot appeal away the gain, but they can reserve for the premium increase rather than letting it surprise them in January.

The Last Home Improvement Is on Paper

Before closing, three details can keep the taxable gain from becoming larger than necessary:

1. Rebuild the basis. A new roof, kitchen remodel, addition or heating and cooling replacement may increase basis, while routine repairs generally do not. Selling commissions and qualifying closing costs can also reduce the gain.

2. Keep discretionary income out of the sale year. Required distributions still must be taken, but a Roth conversion, optional individual retirement account withdrawal or avoidable brokerage gain may be able to wait.

3. Budget for the 2028 surcharge. Reserving the estimated difference from the sale proceeds turns a delayed Medicare bill into a planned closing cost.

The house appreciated one room at a time, but the tax return sees it all at once. A carefully rebuilt basis is the last home improvement that can still pay for itself in spades.

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