RCW 82.04.433: Deductions—Sales of fuel for consumption outside United States' waters by vessels in foreign commerce.

(1) In computing tax there may be deducted from the measure of tax imposed under RCW 82.04.250 and 82.04.270 amounts derived from sales of fuel for consumption outside the territorial waters of the United States, by vessels used primarily in foreign commerce.

(2) The deduction in subsection (1) of this section does not apply with respect to the tax imposed under RCW 82.04.240, whether the value of the fuel under that tax is measured by the gross proceeds derived from the sale thereof or otherwise under RCW 82.04.450.