If 2027 is the first year your MAGI drops you to a lower IRMAA level, then the Part B premiums you pay in 2027 can be lowered, to use the 2027 MAGI (rather than the default 2025 MAGI). Submit the SSA-44 form around late 2026, after you receive the notice that you are being charged the IRMAA for 2027.
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If 2027 is the first year your MAGI drops you to a lower IRMAA level, then the Part B premiums you pay in 2027 can be lowered, to use the 2027 MAGI (rather than the default 2025 MAGI). Submit the SSA-44 form around late 2026, after you receive the notice that you are being charged the IRMAA for 2027.
Post: Another IRMAA Question
Link to comment from November 8, 2025