The RMD Trap: How a Single $95,000 Withdrawal Blindsided a 73-Year-Old’s Medicare Costs

Why a Routine Withdrawal Casts a Long Shadow

Tom is 73, single, on Medicare, and lives in the kind of sweet retirement most people dream about. Social Security brings in about $36,000 a year. A small pension adds another $24,000. Between the two, his income sat well below the threshold that triggers higher Medicare premiums, so for years he paid the standard Part B amount and never thought twice about it.

In 2024, that changed. Tom took his first Required Minimum Distribution (RMD) from a large traditional IRA. Using the IRS Uniform Lifetime Table divisor of 26.5 at age 73, the withdrawal from his roughly $2.5 million account came to about $95,000. He paid the income tax and moved on. Two years later, the bill arrived in his 2026 Medicare letter. Retirees on online forums describe the same shock: a single first withdrawal, no warning, and a premium that jumped substantially seemingly overnight.

The Two-Year Lag That Catches Everyone

Medicare prices its surcharges, known as the Income-Related Monthly Adjustment Amount (IRMAA), off your tax return from two years earlier. So Tom’s 2026 premium is set by his 2024 modified adjusted gross income (MAGI), with no warning letter from the IRS or Social Security Administration (SSA) in between.

Here is Tom’s back-of-the-napkin math. Social Security and the pension put him near $55,000 of MAGI before the withdrawal. Add the $95,000 RMD on top, and 2024 MAGI lands near $150,000. For a single filer in 2026, that falls in the tier above $137,000 and at or below $171,000. The Part B surcharge for that tier is $202.90 per month, sitting on top of the standard $202.90 premium for a total of $405.80. His Part B bill doubles. A Part D surcharge stacks on as well.

Annualized, that is roughly $2,435 more for Part B alone, plus the Part D surcharge, for the full year. One mandatory withdrawal, taken without any IRMAA planning, raised his Medicare bill for 12 months. An RMD does not qualify for a Form SSA-44 appeal. That form is reserved for life-changing events such as retirement, marriage, divorce, or the death of a spouse.

How RMDs Talk to the Rest of Retirement

This is where the pieces connect. Once Social Security and a pension are flowing, every extra dollar of IRA income lands on a base that is already partly taxable. The RMD creates its own tax bill, pushes more of Social Security into taxable territory, and can shove MAGI across a Medicare cliff. The cliffs are hard edges. A single additional dollar of income can land you in the next tier, and the surcharge applies to the whole year.

That is why timing matters more than size. Drawing from a traditional IRA in the low-income years between retirement and age 73 often costs less in total than waiting until withdrawals are mandatory.

What Would Have Helped, and What Still Can

A few moves can soften the blow, even after the first RMD:

1. Qualified Charitable Distributions sent directly from the IRA to a qualified 501(c)(3) count toward the RMD without raising MAGI. For a charitably inclined retiree, routing part of the RMD this way is the cleanest IRMAA fix available.
2. Partial Roth conversions done in the years before Medicare and RMDs begin. Converting modest amounts in his late 60s would have shrunk the IRA and the withdrawals it now forces. Worth modeling for any remaining lower-income years.
3. A Qualified Longevity Annuity Contract. Up to $210,000 can move into a QLAC in 2026, deferring that income until as late as age 85 and removing it from the current RMD base.

The mistake hardest to undo is treating the first RMD as a one-year tax event. It is also a Medicare event, on a two-year delay, and the brackets are unforgiving at the edges. A quick MAGI projection each fall, before the year closes, is usually all it takes to stay on the right side of the next tier. Every retiree’s situation varies, so running the numbers before December rather than after is time well spent.