made by owner The amount to which subsection (a) applies shall be reduced by the value of any transfer by gift by the deemed owner to the trust previously taken into account by the deemed owner under chapter 12. (f) Liability for payment of tax Any tax imposed pursuant to subsection (a) shall be a liability of the trust. . (b) Clerical amendment The table of chapters for subtitle B is amended by adding at the end the following new item: Chapter 16. Special rules for grantor trusts . (c) Effective date The amendments made by this section shall apply— (1) to trusts created on or after the date of the enactment of this Act