“(a) In general.—For purposes of section 38, in the case of any eligible small employer, the military spouse retirement plan eligibility credit determined under this section for any taxable year is an amount equal to the sum of—

“(1) $250 with respect to each military spouse who is an employee of such employer and who is eligible to participate in an eligible defined contribution plan of such employer at any time during such taxable year, plus

“(2) so much of the contributions made by such employer to all such plans with respect to such employee during such taxable year as do not exceed $250.

“(b) Limitation.—An individual shall only be taken into account as a military spouse under subsection (a) for the taxable year which includes the date on which such individual began participating in the eligible defined contribution plan of the employer and the 2 succeeding taxable years.

“(c) Eligible small employer.—For purposes of this section—

“(1) IN GENERAL.—The term ‘eligible small employer’ means an eligible employer (as defined in section 408(p)(2)(C)(i)(I)).

“(2) APPLICATION OF 2-YEAR GRACE PERIOD.—A rule similar to the rule of section 408(p)(2)(C)(i)(II) shall apply for purposes of this section.

“(d) Military spouse.—For purposes of this section—

“(1) IN GENERAL.—The term ‘military spouse’ means, with respect to any employer, any individual who is married (within the meaning of section 7703 as of the first date that the employee is employed by the employer) to an individual who is a member of the uniformed services (as defined in section 101(a)(5) of title 10, United States Code). For purposes of this section, an employer may rely on an employee’s certification that such employee’s spouse is a member of the uniformed services if such certification provides the name, rank, and service branch of such spouse.

“(2) EXCLUSION OF HIGHLY COMPENSATED EMPLOYEES.—With respect to any employer, the term ‘military spouse’ shall not include any individual if such individual is a highly compensated employee of such employer (within the meaning of section 414(q)).

“(e) Eligible defined contribution plan.—For purposes of this section, the term ‘eligible defined contribution plan’ means, with respect to any eligible small employer, any defined contribution plan (as defined in section 414(i)) of such employer if, under the terms of such plan—

“(1) military spouses employed by such employer are eligible to participate in such plan not later than the date which is 2 months after the date on which such individual begins employment with such employer, and

“(2) military spouses who are eligible to participate in such plan—

“(A) are immediately eligible to receive an amount of employer contributions under such plan which is not less than the amount of such contributions that a similarly situated participant who is not a military spouse would be eligible to receive under such plan after 2 years of service, and

“(B) immediately have a nonforfeitable right to the employee’s accrued benefit derived from employer contributions under such plan.

“(f) Aggregation rule.—All persons treated as a single employer under subsection (b), (c), (m), or (o) of section 414 shall be treated as one employer for purposes of this section.”.