If you check the box at the top of Sch C that its a CA LLC, then when you switch over to the state return (assuming youve installed the 568 module) you should have the SMLLC as an option....it will pull the Sch C info over to it and compute the $800 annual fee.

You want to be sure he qualifies as a day trader, not many people do.

https://www.irs.gov/taxtopics/tc429