Washington Revised Code Title 11. Probate and Trust Law § 11.108.060. Marital deduction gift--Survivorship requirement--Limits--Property to be held in trust

(1) A survivorship requirement expressed in the governing instrument in excess of six months or which may exceed six months, other than survival by a spouse of a common disaster resulting in the death of the transferor, does not apply to property passing under the marital deduction gift, and for the gift, the survivorship requirement may not exceed the period ending six months following the transferor's date of death, as established under section 2056(b)(3) of the Internal Revenue Code.

(2) If the property that is the subject of the marital deduction gift is passing or is to be held in trust, as opposed to passing outright, it must be held in a trust meeting the requirements of section 2056(b)(7) of the Internal Revenue Code the corpus of which must: (a) Pass as though the spouse failed to survive the transferor if the spouse, in fact, fails to survive the term specified in the governing instrument; and (b) pass to the spouse under the terms of the governing instrument if the spouse, in fact, survives the term specified in the governing instrument.