@ThomasM125 I did exactly the same but when I enter my Mark-to-Market trading income using form 4749 (https://ttlc.intuit.com/turbotax-support/en-us/help-article/income/report-trader-activity-without-se...), the QBI doesn't seem to pick up income from form 4749. Can we associate Form 4749 with a specific business in Turbotax? Other than trading (sole proprietorship), I have another LLC.
More urgently, I am also trying to figure out SEP IRA contribution for 2023 (because I am late for solo 401k) which also doesn't tie to a specific business. But when calculating QBI, don't we need to use gross income - business expense - home office - SEP IRA contribution to get the net profit of the LLC, and then do 20%? On the SEP IRA worksheet (Turbotax desktop) the net profit included my LLC expense and my trading schedule C expense but did not include my LLC income (1099-NEC).
