(1) Any payment to the Pension Benefit Guaranty Corporation (PBGC) for termination or withdrawal liability imposed under section 4062 (without regard to section 4062(b)(2)), 4063, or 4064 of the Employee Retirement Insurance Security Act of 1974 (ERISA). Any bond or escrow payment furnished under section 4063 of ERISA shall not be considered as a payment of liability until applied against the liability of the employer.

(2) Any payment to a non-multiemployer plan pursuant to a commitment to the PBGC made in accordance with PBGC Determination of Plan Sufficiency and Termination of Sufficient Plans. See PBGC regulations, 29 CFR 2617.13(b) for rules concerning these commitments. Such payments shall not exceed an amount necessary to provide for, and used to fund, the benefits guaranteed under section 4022 of ERISA.

(3) Any payment to a multiemployer plan for withdrawal liability imposed under part 1 of subtitle E of title IV of ERISA. Any bond or escrow payment furnished under such part shall not be considered as a payment of liability until applied against the liability of the employer.

(1) Permissible expenses. A payment shall be deductible under section 404(g) and this section only if the payment satisfies the conditions of section 162 or section 212. Payments made by an entity which is liable for such payments because it is a member of a commonly controlled group of corporations, or trades or businesses, within the meaning of section 414 (b) or (c), shall not fail to satisfy such conditions merely because the entity did not directly employ participants in the plan with respect to which the liability payments were made.

(2) Qualified plan. A payment shall be deductible under section 404(g) and this section only if the payment is made in a taxable year of the employer ending within or with a taxable year of the trust for which the trust is exempt under section 501(a). For purposes of this paragraph, the payment timing rules of section 404(a)(6) shall apply.

(3) Full funding limitation.

(4) Maximum deduction allowable under section 404. The amount deductible under section 404 is limited to the higher of the maximum amount deductible by the employer under section 404(a) or the amount otherwise deductible under section 404(g). If the contributions are to a plan to which more than one employer contributes, this limit shall apply to each employer separately rather than all employers in the aggregate. Thus, each employer may deduct the greater of its allocable share of the deduction determined under sections 404(a) and 413(b)(7) or 413(c)(6) or its allocable share of the amount deductible under section 404(g). However, pursuant to the rule in subdivision (ii) of subparagraph (3), in determining each employer's allocable share under section 404(a), the total amount deductible under section 404(a) by all employers shall not exceed the difference between the full funding limitation and the total amount deductible by all employers under section 404(g).

(5) Example. The provisions of this paragraph may be illustrated by the following example:

(1) General rule. This section is effective for employer payments made after September 25, 1980.

(2) Transitional rule. For employer payments made before September 26, 1980, for purposes of section 404, any amount paid by an employer under section 4062, 4063, or 4064 of the Employee Retirement Income Security Act of 1974 shall be treated as a contribution to which section 404 applies by such employer to or under a stock bonus, pension, profit-sharing, or annuity plan.