1. Short title This Act may be cited as the Corporate Responsibility and Taxpayer Protection Act of 2017 . 2. Tax on employers with employees receiving certain Federal benefits (a) In general The Internal Revenue Code of 1986 is amended by inserting after chapter 36 the following new chapter: 37 Employers with employees receiving certain Federal benefits 4501. Employers with employees receiving certain Federal benefits (a) Imposition of tax There is hereby imposed on each large employer a tax equal to 100 percent of the qualified employee benefits with respect to such employer for the taxable year. (b) Large employer (1) In general For purposes of this section, the term large employer means, with respect to a calendar year, an employer who employed an average of at least 500 full-time employees on business days during the preceding calendar year. (2) Rules for determining employer size For purposes of this subsection— (A) Application of aggregation rule for employers All persons treated as a single employer under subsection (b), (c), (m), or (o) of section 414 of the Internal Revenue Code of 1986 shall be treated as 1 employer. (B) Full-time equivalents treated as full-time employees Solely for purposes of determining whether an employer is an applicable large employer under this paragraph, an employer shall, in addition to the number of full-time employees for any month otherwise determined, include for such month a number of full-time employees determined by dividing the aggregate number of hours of service of employees who are not full-time employees for the month by 120. (C) Employers not in existence in preceding year In the case of an employer which was not in existence throughout the preceding calendar year, the determination of whether such employer is a large employer shall be based on the average number of employees that it is reasonably expected such employer will employ on business days in the current calendar year. (D) Predecessors Any reference in this subsection to an employer shall include a