RMD & IRMAA Guide (2026): Medicare Surcharges and the 2-Year Lookback

RMDs and IRMAA are tightly coupled: a required minimum distribution at age 73+ pushes your MAGI, which two years later sets your Medicare Part B and Part D surcharges. Plan the conversion years before RMDs start and you can avoid the surcharge entirely.

This is the smallest hub but the most consequential per-dollar: an IRMAA tier-jump costs $1,000-$8,000 per couple per year, and the planning window is narrow.

7 articles · last reviewed 2026-05-17 · part of the QuantCalc research library

RMD mechanics

How to Fill Your Tax Bracket in Early Retirement (Before RMDs

The years between early retirement and your RMD start age (73, or 75 if born in 1960 or later) are your best shot at low tax rates. Here's exactly how to fill your bracket with Roth conversions, capital gains harvesting, and strategic withdrawals.

IRMAA brackets and the 2-year lookback

QCDs and Medicare-friendly giving

Inherited IRA (SECURE 2.0)