Is the ModAGI Wks in TurboTax 2024 correct? It does not have a line item for my 2024 Social Security income, resulting in a very low number.

[CCWil]

I am trying to avoid IRMAA in 2026 & 2027, which will use my 2024 & 2025 MAGI. The ModAGI Wks in TT2024 shows a low number, much lower than our AGI, because it did not include my SS income. Did anyone else experience this?

[dmertz]

Nowhere in TurboTax does TurboTax calculate the MAGI for the purpose of Medicare IRMAA.  MAGI for Medicare IRMAA is AGI on Form 1040 line 11 plus nontaxable interest on line 2a.

[CCWil]

Shame on me for being misled by a Form in TurboTax 2024 titled "Mod AGI Wks".  (see screen snip below)

[VolvoGirl]

There are many different MAGI for different things.  That must be the worksheet for Form 8582, it's between p1 and 8582 p2.  It should say at the top which form it applies to.  

Also it is too late to affect your 2026 SS IRMAA.  Have you got your SS letter yet?  I got mine at the beginning of December.  It uses your 2024 AGI plus line 2a.  Here's mine for 2026, it has the brackets listed.

[CCWil]

I understand that and know I can no longer impact  my 2026 IRMAA.  I was using TT2024 to rough in a 2025 pro forma (yes, I also understand the tax laws have changed) because Intuit is so far behind on updating forms in TT2025, I can't even do the simplest pro forma in it.  That was when I noticed the Mod AGI Wks and investigated.  Let's consider this inquiry complete