(1)(a) Except as otherwise provided in this section, every new tax preference expires on the first day of the calendar year that is subsequent to the calendar year that is ten years from the effective date of the tax preference. With respect to any new property tax exemption, the exemption does not apply to taxes levied for collection beginning in the calendar year that is subsequent to the calendar year that is ten years from the effective date of the tax preference.
(b) If a new tax preference applies to both a state tax and a corresponding local tax that the department administers, such as a state and local sales and use tax exemption, the expiration of that new tax preference under this subsection applies to both the state and local tax.
(c) A future amendment that expands a tax preference does not extend the tax preference beyond the period provided in this subsection unless an extension is expressly and unambiguously stated in the amendment.
(2) Subsection (1) of this section does not apply if legislation creating a new tax preference includes an expiration date for the new tax preference or an exemption from this section in its entirety or from the provisions of subsection (1) of this section, whether or not such exemption is codified.
(3) Subsection (1) of this section does not apply to any existing tax preference that is amended to clarify an ambiguity or correct a technical inconsistency. Future enacted legislation intended to make such clarifications or corrections must explicitly indicate this intent.
(4) For the purposes of this section, the following definitions apply:
(a) "New tax preference" means a tax preference that initially takes effect after August 1, 2013, or a tax preference in effect as of August 1, 2013, that is expanded or extended after August 1, 2013, even if the expanding or extending amendment includes any other change to the tax preference.
(b) "Tax preference" has the same meaning as in RCW
43.136.021 with respect to any state tax administered by the department, except does not include the Washington estate and transfer tax in chapter
83.100 RCW.
(5) The department must provide written notice to the office of the code reviser of a ten-year expiration date required under this section for a new tax preference.