Washington Revised Code Title 82. Excise Taxes § 82.94.070. Conditions for lessors

(2)(a) The lessor by written contract agrees to pass the economic benefit of the deferral to the lessee;

(b) The lessee that receives the economic benefit of the deferral agrees in writing with the department to complete the annual tax performance report required under RCW 82.94.050; and

(c) The economic benefit of the deferral passed to the lessee is no less than the amount of tax deferred by the lessor and is evidenced by written documentation of any type of payment, credit, or other financial arrangement between the lessor or owner of the qualified building and the lessee.