Quick Read – IRMAA surcharges hit 5.1 million Medicare enrollees in 2025, costing top-tier couples nearly $11,688 more per year than standard premiums. – The two-year lookback means a 2024 Roth conversion or stock sale can spike 2026 Medicare premiums with no warning on the tax…
turn. – Qualified Charitable Distributions up to $108,000 in 2026 satisfy RMDs without raising the MAGI that triggers IRMAA brackets. – The bill arrives, and the number does not match what the neighbors are paying. That is how most retirees discover IRMAA
About 5.1 million Medicare beneficiaries paid the Part B income-related surcharge in 2025, roughly 7% of the 69 million people on Medicare, and a separate 4.4 million paid the Part D version. Almost all of them learned the acronym the hard way, from a premium notice tied to a tax return filed two years earlier. What IRMAA Is, and Why It Feels Hidden IRMAA stands for Income-Related Monthly Adjustment Amount.
Social Security adds it to the standard Part B and Part D premiums when income clears a threshold, and it uses tax returns from two years back to decide. For 2026, the first bracket starts at $109,000 for a single filer and $218,000 for a married couple filing jointly, based on 2024 income. Most retirees never see the trigger coming, because the income year that drives the surcharge is already closed by the time the bill arrives.