An Inherited IRA Created Income She Never Asked for, and a $6,936 Medicare Surcharge She Never Saw Coming Quick Read – Medicare’s IRMAA surcharge uses income from two years prior, so a large 2024 inherited IRA distribution locks in a $6,936 penalty for 2026. – IRMAA starts at…
09,000 MAGI for single filers and works as a cliff, where one dollar over a threshold raises the entire year’s premiums. – Spreading inherited IRA withdrawals across the full 10-year window keeps MAGI under IRMAA thresholds and avoids a multi-thousand-dollar Medicare surcharge. – The Inheritance That Arrived as a Tax Bill She is 66, retired, on Medicare, and living comfortably on Social Security plus modest withdrawals from her own savings. Then a parent passed away and left her a traditional IRA worth several hundred thousand dollars
Under the SECURE Act, most non-spouse heirs who inherited in 2020 or later must empty the account within 10 years. Worried about the deadline, she took a large lump distribution in 2024 to settle the matter quickly. That single decision is now costing her $6,936 in extra Medicare premiums for 2026, on top of income tax she already paid.
The money was never income she chose to earn, but the IRS and Medicare treat it exactly as if she had. This scenario appears in retirement forums every week: someone inherits a parent’s IRA, worries about the 10-year clock, withdraws a large amount early, and only later learns that Medicare indexes premiums to income from two years back. How a Two-Year Lookback Turned Into a $6,936 Surprise Medicare’s Income-Related Monthly Adjustment Amount, or IRMAA, is the surcharge added to Part B and Part D premiums for higher-income beneficiaries. 2026 premiums are calculated using the modified adjusted gross income (MAGI) reported on the 2024 tax return.