@tizzy2335 your 2024 IRMAA was based on Line 11 plus Line 2a from your 2022 tax return. It's that simple.
SSA - POMS: HI 01101.010 - Modified Adjusted Gross Income (MAGI) - 01/05/2024
Your 2026 IRMAA is based on Line 11 plus Line 2a from your 2024 tax return.
