20 Pa.C.S. § 8167
(3) The ownership by a trust of an interest in an entity the taxable income of which, whether or not distributed, is includable in the taxable income of the trust or a beneficiary.
SUBCHAPTERS F and G
(Reserved)
A trustee may make adjustments between principal and income to offset the shifting of economic interests or tax benefits between income beneficiaries and remainder beneficiaries which arise from any of the following: