Section 20110 - Generally(a) Except as provided in subdivision (b), any estate tax shall be equitably prorated among the persons interested in the estate in the manner prescribed in this article.(b) This section does not apply: (1) To the extent the decedent in a written inter vivos or testamentary instrument disposing of property specifically directs that the property be applied to the satisfaction of an estate tax or that an estate tax be prorated to the property in the manner provided in the instrument. As used in this paragraph, an "instrument disposing of property" includes an instrument that creates an interest in property or an amendment to an instrument that disposes of property or creates an interest in property.(2) Where federal law directs otherwise. If federal law directs the manner of proration of the federal estate tax, the California estate tax shall be prorated in the same manner.Enacted by Stats. 1990, Ch. 79.