Washington DOR Issues Updated Excise Tax Advisory on Use, B&O Tax for Self-Produced Fuels

The Washington Department of Revenue (DOR) issued an excise tax advisory regarding the application of state and local use tax and business and occupation (B&O) tax to self-produced fuels, including biomass, refinery fuel gas, catalyst coke, diesel, biodiesel, hydrogen, and green coke. The advisory provides details on tax rates and exemptions for different types of self-produced fuels used by extractors and manufacturers. The update includes the use tax value of refinery fuel gas for Q1 2026. [Wash. Dep’t of Revenue, Excise Tax Advisory 3014-2025, 12/22/25]

This story was produced by Bloomberg Tax Automation, and edited by Bloomberg Tax staff.