20 C.F.R. § 404.1066 Trade or business in general.
Title 20 - Employees' Benefits
For you to be covered as a self-employed person for social security purposes, you must be engaged in a trade or business. You can carry on a trade or business as an individual or as a member of a partnership. With some exceptions, the term trade or business has the same meaning as it does when used in section 162 of the Code.
Title 20: Employees' Benefits
PART 404—FEDERAL OLD-AGE, SURVIVORS AND DISABILITY INSURANCE (1950– )
Subpart K—Employment, Wages, Self-Employment, and Self-Employment Income
Self-Employment
§ 404.1066 Trade or business in general.
