Multiple Employer Plan Rules
IRC 413 (c) Plans maintained by more than one employer
In the case of a plan maintained by more than one employer--(1) Participation
Section 410(a) shall be applied as if all employees of each of the employers who maintain the plan were employed by a single employer.(2) Exclusive benefit
For purposes of section 401(a), in determining whether the plan of an employer is for the exclusive benefit of his employees and their beneficiaries all plan participants shall be considered to be his employees.(3) Vesting
Section 411 shall be applied as if all employers who maintain the plan constituted a single employer, except that the application of any rules with respect to breaks in service shall be made under regulations prescribed by the Secretary of Labor.(4) Funding
(A) In general
In the case of a plan established after December 31, 1988, each employer shall be treated as maintaining a separate plan for purposes of section 412 unless such plan uses a method for determining required contributions which provides that any employer contributes not less than the amount which would be required if such employer maintained a separate plan.(B) Other plans
In the case of a plan not described in subparagraph (A), the requirements of section 412 shall be determined as if all participants in the plan were employed by a single employer unless the plan administrator elects not later than the close of the first plan year of the plan beginning after the date of enactment of the Technical and Miscellaneous Revenue Act of 1988 to have the provisions of subparagraph (A) apply. An election under the preceding sentence shall take effect for the plan year in which made and, once made, may be revoked only with the consent of the Secretary.(5) Liability for funding tax
For a plan year the liability under section 4971 of each employer who maintains the plan shall be determined in a reasonable manner not inconsistent with regulations prescribed by the Secretary--(A) first on the basis of their respective delinquencies in meeting required employer contributions under the plan, and (B) then on the basis of their respective liabilities for contributions under the plan.(6) Deduction limitations
(A) In general
In the case of a plan established after December 31, 1988, each applicable limitation provided by section 404(a) shall be determined as if each employer were maintaining a separate plan.(B) Other plans
(i) In general
In the case of a plan not described in subparagraph (A), each applicable limitation provided by section 404(a) shall be determined as if all participants in the plan were employed by a single employer, except that if an election is made under paragraph (4)(B), subparagraph (A) shall apply to such plan.(ii) Special rule
If this subparagraph applies, the amounts contributed to or under the plan by each employer who maintains the plan (for the portion of the taxable year included within a plan year) shall be considered not to exceed any such limitation if the anticipated employer contributions for such plan year (determined in a reasonable manner not inconsistent with regulations prescribed by the Secretary) do not exceed such limitation. If such anticipated contributions exceed such a limitation, the portion of each such employer's contributions which is not deductible under section 404 shall be determined in accordance with regulations prescribed by the Secretary.(7) Allocations
(A) In general
Except as provided in subparagraph (B), allocations of amounts under paragraphs (4), (5), and (6) among the employers maintaining the plan shall not be inconsistent with regulations prescribed for this purpose by the Secretary.(B) Assets and liabilities of plan
For purposes of applying paragraphs (4)(A) and (6)(A), the assets and liabilities of each plan shall be treated as the assets and liabilities which would be allocated to a plan maintained by the employer if the employer withdrew from the multiple employer plan.
Reg. Sec. 1.413-2 Special rules for plans maintained by more than one employer.
(a) Application of section 413(c)--
(1) In general.
Section 413(c) describes certain plans (and each trust which is a part of any such plan) hereinafter referred to as "section 413(c) plans." A plan (and each trust which is a part of such plan) is deemed to be a section 413(c) plan if it is described in subparagraph (2) of this paragraph. Notwithstanding any other provision of the code (not specifically in conflict with the special rules hereinafter mentioned), a section 413(c) plan is subject to the special rules of section 413(c) (1) through (6) and paragraphs (b) through (g) of this section.(2) Section 413(c) plan.
A plan (and each trust which is a part of such plan) is a section 413(c) plan if--(i) The plan is a single plan, within the meaning of section 413(a) and section 1.413-1(a)(2), and (ii) The plan is maintained by more than one employer.For purposes of subdivision (ii) of this subparagraph, the number of employers maintaining the plan is determined by treating any employers described in section 414(b) (relating to a controlled group of corporations) or any employers described in section 414(c) (relating to trades or businesses under common control), whichever is applicable, as if such employers are a single employer. See section 1.411(a)-5(b)(3) for rules relating to the time when an employer maintains a plan. A master or prototype plan is not a section 413(c) plan unless such a plan is described in this subparagraph. Similarly, the mere fact that a plan, or plans, utilizes a common trust fund or otherwise pools plan assets for investment purposes does not, by itself, result in a particular plan being treated as a section 413(c) plan.(3) Additional rules.
(i) If a plan is a collectively bargained plan described in section 1.413-1(a), the rules of section 413(c) and this section do not apply, and the rules of section 413(b) and section 1.413-1 do apply to the plan. (ii) The special rules of section 413(b)(1) and section 1.413-1(b) relating to the application of section 410, other than the rules of section 410(a), do not apply to a section 413(c) plan. Thus, for example, the minimum coverage requirements of section 410(b) are generally applied to a section 413(c) plan on an employer-by-employer basis, taking into account the generally applicable rules such as section 401(a)(5) and section 414 (b) and (c). (iii) The special rules of section 413(b)(2) and section 1.413-1(c) (relating to (A) section 401(a)(4) and prohibited discrimination, and (B) 411(d)(3) and vesting required on termination, partial termination, or discontinuance of contributions) do not apply to a section 413(c) plan. Thus, for example, the determination of whether or not there is a termination, within the meaning of section 411(d)(3), of a section 413(c) plan is made solely by reference to the rules of sections 411(d)(3) and 413(c)(3). (iv) The qualification of a section 413(c) plan, at any relevant time, under section 401(a), 403(a) or 405(a), as modified by section 413(c) and this section, is determined with respect to all employers maintaining the section 413(c) plan. Consequently, the failure by one employer maintaining the plan (or by the plan itself) to satisfy an applicable qualification requirement will result in the disqualification of the section 413(c) plan for all employers maintaining the plan.(4) Effective dates.
Except as otherwise provided, section 413(c) and this section apply to a plan for plan years beginning after December 31, 1953.