In general
If amounts are deductible under the foregoing paragraphs of this subsection (other than paragraph (5)) in connection with 1 or more defined contribution plans and 1 or more defined benefit plans or in connection with trusts or plans described in 2 or more of such paragraphs, the total amount deductible in a taxable year under such plans shall not exceed the greater of—
(i)#
25 percent of the compensation otherwise paid or accrued during the taxable year to the beneficiaries under such plans, or
(ii)#
the amount of contributions made to or under the defined benefit plans to the extent such contributions do not exceed the amount of employer contributions necessary to satisfy the minimum funding standard provided by section 412 with respect to any such defined benefit plans for the plan year which ends with or within such taxable year (or for any prior plan year).
A defined contribution plan which is a pension plan shall not be treated as failing to provide definitely determinable benefits merely by limiting employer contributions to amounts deductible under this section. In the case of a defined benefit plan which is a single employer plan, the amount necessary to satisfy the minimum funding standard provided by section 412 shall not be less than the excess (if any) of the plan’s funding target (as defined in section 430(d)(1)) over the value of the plan’s assets (as determined under section 430(g)(3)).