Washington Revised Code Title 84. Property Taxes § 84.33.086. Payment of tax

(1) The taxes imposed under this chapter shall be computed with respect to timber harvested each calendar quarter and shall be due and payable in quarterly installments. Remittance shall be made on or before the last day of the month next succeeding the end of the quarterly period in which the tax accrues. The taxpayer on or before such date shall make out a return, upon such forms and setting forth such information as the department of revenue may require, showing the amount of tax for which the taxpayer is liable for the preceding quarterly period and shall sign and transmit the same to the department of revenue, together with a remittance for the amount of tax.

(2) The taxes imposed by this chapter are in addition to any taxes imposed upon the same persons under chapter 82.04 RCW.

(3) Any harvester incurring less than fifty dollars tax liability under this section in any calendar quarter is excused from the payment of such tax, but may be required by the department of revenue to file a return even though no tax may be due.