Following the IRS scheme, "Schedules" are part of "Forms." Are you working on a Form 1040 for someone who has self-employment activities? Did you enter their info?
Yes, I'm helping a client with self-employment. I'm working on schedule C, but my question is if I have to check the box "All income subject to SE tax"? Because I finished schedule C and I don't see any schedule SE.
"if I have to check the box "All income subject to SE tax"?'
You have to do whatever applies, for everything. Is that income subject to SE or not? No one on the internet can answer this question.
The IRS has interactive tax assistants (wizards). Follow this one:
https://www.irs.gov/help/ita/do-i-have-income-subject-to-self-employment-tax
You have clicked a link to a site outside of the Intuit Accountants Community. By clicking "Continue", you will leave the community and be taken to that site instead.