Thanks. Here's my example using your same Schedule 1-A example, where I simply put the line number followed by the TurboTax amount in Schedule 1-A as I get in my (relatively new) 2025 TurboTax Home & Business.
31 $151,000
32 $150,000
33 $1,000
34 $60
35 $5,940
36 $5,940
37 $11,880
Note that $11,880 is $120 less than the full enhanced senior deduction, or 12% of the $1000 difference between $151,000 and $150,000. Now, I haven't read the actual tax code so maybe it's true that the loss of deduction for MAGI exceeding $150,000 is 6% per person or 12% of the joint total above the MAGI. However, AI and googled website responses suggest that the loss from being $1000 over the $150,000 per my example is only 6% of the $1000, or $60, meaning this line 37 should be $12,940.
Now, maybe such internet answers are wrong. I'll show one example of my question and its answer from Gemini's AI engine.
Question: "For a MAGI of $151,000 for a married filing jointly couple where both are seniors, what is the enhanced senior deduction?"
Answer (I've cut out some of the detailed explanations for brevity): "For your specific situation, the deduction is $11,940."
So for my example, the question is whether the correct answer is the $11,880 as shown by TurboTax (12% loss of total amount over $150,000) or the $11,940 shown by Gemini (6% loss of total amount over $150,000).
And, of course, I can use other MAGI's above $150,000 and I'll still get the same 12% loss over $150k via TurboTax and 6% loss over $150k via an AI engine like Gemini. Are you stating that you believe that 12% is the correct figure?
