A "business client" filing Sched C never "pays" themselves through payroll (W2) or sends themselves a 1099-Misc.

But that makes them a Tax Filer, which puts them in the qualification pool for a stimulus check, assuming they meet the other qualifications, as a 1040 filer.

Are you asking about the $1,200 stimulus check for Individuals?

Have you read any of the regulations or notices or public releases or news on this function?