Washington's major business tax is the business and occupation (B&O) tax.  The B&O tax is imposed on the gross receipts of business activities conducted within the state, without any deduction for the costs of doing business.  Businesses must pay the B&O tax even though they may not have any profits or may be operating at a loss.  A taxpayer may have more than one B&O tax rate, depending on the types of activities conducted.  Major B&O tax rates are 0.471 percent for retailing; 0.484 percent for manufacturing, wholesaling, and extracting; and 1.5 percent—businesses with taxable income of less than $1 million 1.75 percent—businesses with taxable income of $1 million or more for services and for activities not classified elsewhere.  Several preferential rates also apply to specific business activities.

Qualifying businesses may take a credit against B&O tax due up to $35 per month in the tax reporting period.  The credit phases out as the B&O tax liability exceeds $35, phasing out completely when the tax due exceeds $70.  For service businesses, the monthly credit is $70 per month in the tax reporting period.  This credit phases out as the B&O tax liability exceeds $70, phasing out completely when the tax due exceeds $140.  The Department of Revenue provides credit tables for use by all taxpayers, which applies the credit in $5 increments.

The B&O tax is generally reported on the Combined Excise Tax Return (CETR).  Non-service firms whose annual gross income does not exceed $28,000 are not required to file excise tax returns if they have no other state excise taxes to report.  For service firms, the filing threshold is $46,667.  Any business that collects any retail sales tax must file, regardless of the amount of sales tax collected or income of the business.  Generally, a CETR must be filed on a monthly basis; however, the Department of Revenue may relieve any taxpayer or class of taxpayers from the obligation of remitting monthly and may require the CETR to cover other longer reporting periods, but in no event may returns be filed for a period greater than one year 

Legislation that establishes or expands a tax preference, such as a tax exemption, deduction, or preferential rate, must include a tax preference performance statement that identifies the public policy objective of the tax preference, as well as specific metrics that the Joint Legislative Audit and Review Committee (JLARC) can use to evaluate the effectiveness of the preference.  A new tax preference automatically expires after ten years unless an alternative expiration date is provided or the tax preference is exempt from the automatic expiration date in the bill.

For non-service businesses, the small business B&O credit amount is increased from $35 per month in the tax reporting period to $55 per month.  For service businesses, the small business B&O credit amount is increased from $70 per month in the tax reporting period to $160 per month.   

The B&O tax filing threshold is increased to $125,000 annually.

The increase in the small business B&O credit is subject to the automatic ten year expiration date and JLARC review.  

The bill applies to tax reporting periods beginning on or after January 1, 2023.