Retired Farmer Discovers Land Sale Triggers a Tax Torpedo and an IRMAA Surprise

Retired Farmer Discovers Land Sale Triggers a Tax Torpedo and an IRMAA Surprise

Carl Sullivan

Fri, August 14, 2026 at 6:36 PM GMT+3 4 min read

Quick Read

• Selling 80 acres for $1.1M triggered a $950,000 capital gain, top capital gains rates, a 3.8% net investment income tax, and IRMAA Medicare surcharges two years later.

• Holding the land until death would have erased the entire embedded gain through stepped-up basis, making the sale a costly conversion of a near-tax-free inheritance.

• An installment sale, 1031 exchange, or simple lease arrangement could have deferred or eliminated most of the tax bill if structured before signing the purchase agreement.

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Life is good for a 72-year-old Iowa farmer who's ready to retire. He's selling his 80-acre farm for $1.1 million and he has about $310,000 in an IRA. He only paid $150,000 for the property decades ago, which means a huge profit. Unfortunately, it also means a huge tax bill.

This scenario is common across the Corn Belt right now. Ground bought in the 1970s or 1980s carries an enormous embedded gain, and one closing pulls all of it into one tax return.

Recognizing roughly $950,000 of long-term capital gain in a single year lands the farmer squarely in the top long-term capital gains bracket. On top of that, the 3.8% net investment income tax applies to investment income once modified adjusted gross income clears $200,000 single or $250,000 married filing jointly.

Then the Social Security tax torpedo hits. The thresholds that decide how much of a benefit gets taxed, $25,000 for single filers and $32,000 for married filing jointly, were written into law in 1983 and 1984 and have never been indexed for inflation. Any retiree with a real gain drags up to 85% of benefits into taxable income automatically. Iowa income tax layers on top.

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And two years later comes the delayed punch. IRMAA, the income-related surcharge on Medicare, is based on MAGI from two years prior. At the top tier, MAGI above $500,000 single or $750,000 joint triggers a Part B surcharge of $487 per month on top of the standard $203 premium, plus a Part D surcharge of $91 per month. For a married couple, that surcharge alone runs into the thousands for the year.

Had the farmer held the farm until death, his heirs would have inherited it at fair market value. Selling during life converts a tax-free transfer at death into a fully taxable event now.

Paths That Could Change the Outcome

1. Installment sale. Spread the purchase price over 10 or 15 years of buyer payments. The gain is recognized as payments come in, smoothing capital gains brackets, keeping MAGI under IRMAA cliffs, and softening the Social Security torpedo. Tradeoff: buyer default risk, and no lump sum on closing day.

2. 1031 like-kind exchange. Roll the proceeds into other income-producing farmland or rental real estate. The gain defers entirely. Deadlines are strict: 45 days to identify replacement property, 180 days to close. This defers rather than eliminates, but combined with a step-up at death on the replacement property, it can eliminate the gain for heirs.

3. Keep the ground and lease it. Cash rent or crop-share arrangements produce income without a taxable event on the land itself. The acres still get the step-up at death.

4. Charitable remainder trust. The trust sells the land tax-free, pays the farmer an income stream for life, delivers a current-year deduction, and sends the remainder to charity.

5. Sell in tranches. Split 80 acres into two or three closings across separate tax years. It's less elegant than an installment sale but easier to execute with multiple buyers.

If a closing is already scheduled, the window to restructure is now, before the purchase agreement is signed. After closing, most of these tools are gone. Get a CPA who actually knows agricultural land in the room early, not the week before filing. The fee is trivial against a bill that can run into six figures of federal tax, state tax, and Medicare surcharges combined.

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