Income for IRMAA Can be Very Different From Other Income

I noticed that the income used for the IRMAA calculation is way higher and lower in some years compared to other income. Why is that?

The income used for IRMAAis the modified adjusted gross income (MAGI) from two years prior if the program has the two year prior number for this. In other words, if today's year is 2024 then the two year lagged MAGI for IRMAA will be used starting in 2026 and onward. Otherwise the current year's MAGI is used.


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