method for secure deferral arrangements A defined contribution plan shall be treated as meeting the requirements of paragraph (2) with respect to matching contributions and employee contributions if the plan— (A) is a secure deferral arrangement (as defined in subsection (k)(14)), (B) meets the requirements of clauses (ii) and (iii) of paragraph (11)(B), and (C) provides that matching contributions on behalf of any employee may not be made with respect to an employee’s contributions or elective deferrals in excess of 10 percent of the employee’s compensation. . (c) Effective date The amendments made by this section shall apply to plan years beginning after December 31, 2017. 9. 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, as amended by section 7, is further amended by adding at the end the following new section: 45T. 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