26 C.F.R. § 31.6001-6 Notice by district director requiring returns, statements, or the keeping of records.
Title 26 - Internal Revenue
The district director may require any person, by notice served upon him, to make such returns, render such statements, or keep such specific records as will enable the district director to determine whether or not such person is liable for any of the taxes to which the regulations in this part have application.
Title 26: Internal Revenue
PART 31—EMPLOYMENT TAXES AND COLLECTION OF INCOME TAX AT SOURCE
Subpart G—Administrative Provisions of Special Application to Employment Taxes (Selected Provisions of Subtitle F, Internal Revenue Code of 1954)
§ 31.6001-6 Notice by district director requiring returns, statements, or the keeping of records.