If you have any income that was reported to you on a 1099 MISC with an amount in box 7, then this income will be reported on Schedule C. Therefore, in the eyes of the IRS, this is self-employed income and self-employment taxes are due on it. See more information below:
https://ttlc.intuit.com/replies/4771022
If you did not have a 1099-MISC income, but have a Schedule C was added because you had Schedule C income last year, see the steps below to delete the form from being attached to your return:
https://ttlc.intuit.com/replies/3300011
