The Retiree Who Did Everything Right and Still Got a Huge Tax Bill

A 73-year-old widow with a $1.9 million traditional IRA and no Roth balance faces a first required minimum distribution in 2026. Using the IRS Uniform Lifetime Table divisor of 26.5, the first RMD equals about $71,698. With Social Security around $42,000, her gross income rises to roughly $114,000, exceeding the $109,000 IRMAA threshold for single filers. Federal income tax on the RMD is estimated around the mid-teens after standard and senior deductions, placing her in the 22% to 24% bracket. Medicare premium surcharges follow a two-year lookback, so 2026 income increases 2028 Part B and Part D costs, potentially adding about $1,050 per year and accumulating over multiple years as RMDs grow. Inflation further reduces purchasing power.

"The number is jarring: $1,900,000 divided by the 26.5 IRS Uniform Lifetime Table divisor at age 73 equals $71,698 of mandatory withdrawal. Add Social Security of roughly $42,000 and her gross income jumps to about $114,000 in a year when she planned to spend perhaps $70,000."

"The federal tax is painful but predictable. After the $16,100 standard deduction, the $2,050 senior add-on, and a possible $6,000 senior bonus deduction, the marginal hit on the RMD lands around $14,500, putting her in the 22% to 24% bracket."

"Medicare uses a two-year lookback, so 2026 income drives 2028 premiums. Crossing into the second IRMAA tier adds about $74 per month to Part B and roughly $14 to Part D, or about $1,050 per year. Stay in that tier across several years of growing RMDs and the cumulative surcharge approaches $3,500."

"Inflation makes the squeeze worse. CPI has climbed from about 314 in April 2024 to about 333 in April 2026, and Core PCE sits at the 90th percentile of its trailing 12-month range. A $71,700 withdrawal buys less today than the same dollar amount would have two years ago."

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