; and (2) simplify and clarify the automatic escalation rules under sections 401(k)(13)(C)(iii) and 401(k)(14)(C) of the Internal Revenue Code of 1986 in the context of employers with multiple payroll and administrative systems. Such regulations or guidance shall address the particular case of employees within the same plan who are subject to different notice timing and different percentage requirements, and provide assistance for plan sponsors in managing such cases. 104. Credit for employers with respect to modified safe harbor requirements (a) In general Subpart D of part IV of subchapter A of chapter 1 of the Internal Revenue Code of 1986 is amended by adding at the end the following new section: 45S. Credit for small employers with respect to modified safe harbor requirements for automatic contribution arrangements (a) General rule For purposes of section 38, in the case of a small employer, the safe harbor adoption credit determined under this section for any taxable year is the amount equal to the total of the employer’s matching contributions under section 401(k)(14)(D) during the taxable year on behalf of employees who are not highly compensated employees, subject to the limitations of subsection (b). (b) Limitations (1) Limitation with respect to compensation The credit determined under subsection (a) with respect to contributions made on behalf of an employee who is not a highly compensated employee shall not exceed 2 percent of the compensation of such employee for the taxable year. (2) Limitation with respect to years of participation Credit shall be determined under subsection (a) with respect to contributions made on behalf of an employee who is not a highly compensated employee only during the first 5 years such employee participates in the qualified automatic contribution arrangement. (c) Definitions (1) In general Any term used in this section which is also used in section 401(k)(14) shall have the same meaning as when used in such section. (2) Small employer The term small employer means an