Cal. Prob. Code § 19519
(a) For purposes of this section:
(b) An exercise of the decanting power is subject to all of the following limitations:
(8) In this paragraph, “tax benefit” means a federal or state tax deduction, exemption, exclusion, or other benefit not otherwise listed in this section, except for a benefit arising from being a grantor trust. Subject to paragraph (9), a second trust instrument may not include or omit a term that, if included in or omitted from the first trust instrument, would have prevented qualification for a tax benefit if both of the following apply:
(9)
(10) An authorized fiduciary may not exercise the decanting power if a settlor objects in a signed writing delivered to the fiduciary within the notice period and either of the following conditions is satisfied:
(B) The first trust is a nongrantor trust and a second trust is a grantor trust, in whole or in part, with respect to the settlor, unless either of the following apply: