A 73-year-old widow takes her Required Minimum Distribution (RMD) from a $600,000 traditional IRA. Social Security, a small pension, and the RMD push her modified adjusted gross income (MAGI) to about $112,000. Her 2026 Medicare bill is about to carry a surcharge she did not know existed, and writing a check to her church after the RMD hits her account will not stop it.
The reason: IRMAA reads MAGI, a figure that excludes most deductions. Cross the first single-filer threshold of $109,000 by one dollar and the Part B premium moves from the standard $202.90 to $284.10 per month, with a Part D surcharge of $14.50 stacked on top. Only roughly 8% of people with Medicare Part B pay any IRMAA, so most readers can stop reading. Anyone whose 2026 MAGI is drifting near that first cliff should keep going.
The Charitable Trick That IRMAA Cannot See
An IRA owner age 70½ or older can send money directly from a traditional IRA to a qualified public charity as a Qualified Charitable Distribution. QCDs after 70½ are excluded from MAGI. The distribution counts toward the year’s RMD but never lands in adjusted gross income, so it never touches the number CMS uses to set the Part B and Part D surcharge.
Take the RMD the normal way, deposit it, then donate: the full RMD hits AGI. The charitable deduction only helps a taxpayer who itemizes, and most retirees claim the standard deduction. Even for itemizers, the deduction shrinks taxable income but leaves MAGI untouched. IRMAA still reads the higher number.
The Math on a Single $10,000 Gift
Assume the widow’s MAGI would land at $112,000 if she takes her full RMD in cash. Route $10,000 of that RMD as a qualified charitable distribution (QCD) to charity and MAGI drops to $102,000, below the $109,000 single-filer line. Seven thousand dollars is the entire distance between a surcharge and none. Part B stays at $202.90 instead of $284.10, and the $14.50 Part D add-on disappears. That is roughly $1,148 a year of Medicare cost erased by a gift she was going to make anyway.
Timing matters. IRMAA runs on a two-year lookback: 2026 income sets 2028 premiums. The calendar does not negotiate. The window to change 2026 MAGI closes December 31, 2026. Miss it and no appeal exists for voluntary income.
The Survivor Trap Makes This Bigger
Single-filer IRMAA brackets are roughly half the joint brackets. A married couple with $215,000 of MAGI pays the standard Part B premium because the joint first tier starts at $218,000. When one spouse dies, the survivor files single at the same income and lands in a higher tier, paying the surcharge every month for every year the income stays there. A recurring QCD drops MAGI back below the cliff.
Where SSA-44 Does Not Help
SSA-44 lets a beneficiary appeal an IRMAA determination after a qualifying life event: marriage, divorce, spousal death, work stoppage or reduction, loss of income-producing property, or loss of pension income. It does not reverse a Roth conversion, a home sale, or an RMD taken as cash. A retiree who realizes in November that her RMD will trigger IRMAA cannot appeal it away later. She can only prevent it before December 31, and a QCD is the cleanest lever available.
Three Actions Before Year-End
Confirm the age on the date of transfer. The IRS requires the account holder to be 70½ on the actual day the funds leave the IRA, not the calendar year of the birthday.
Instruct the IRA custodian to make the check payable to the charity. Vanguard, Fidelity, and Charles Schwab (NYSE:SCHW | SCHW Price Prediction) all have QCD request forms. The check must never pass through the owner’s checking account, or the exclusion is lost and the money becomes ordinary taxable income.
Get a written acknowledgment from the charity and keep it with the tax return. On Form 1040, the gross distribution goes on line 4a, the reduced taxable amount on line 4b, and “QCD” is written in the margin. The 2.8% Social Security cost-of-living adjustment (COLA) for 2026 will nudge more retirees toward the first IRMAA line next year, which makes running the QCD calculation now, before the December cutoff, the highest-value move on the calendar.
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