Washington State Department of Revenue.  The Department of Revenue (DOR) is a state agency that administers and collects the majority of taxes in Washington. The agency is also responsible for processing business license applications and renewals, auditing businesses, enforcing compliance with tax laws, locating unregistered businesses, providing taxpayer assistance, information, and education, overseeing the administration of property tax, and managing the state’s Unclaimed Property program. DOR has a public website with general information on state and local taxes. 

Legislative Evaluation and Accountability Program Committee.  The Legislative Evaluation and Accountability Program (LEAP) Committee is a bipartisan committee of four senators and four representatives. The committee was created by the Legislature to serve as an independent source of information and technology for developing budgets, communicating budget decisions, and tracking revenue, expenditure, and staffing activity. LEAP also maintains the state fiscal website. The website displays a variety of expenditure, revenue, and staffing data.

By January 1, 2024, DOR must make a public online searchable database of all taxes and tax rates in the state for each taxing district. The information must be aggregated by tax type and accessible by entering a physical address for each residency or business. In addition to searching by physical address for each residence or business, searches must be accommodated by navigating through a map of the state as a whole and down to the level of each taxing district.
 
DOR must also provide tax rate calculators on the searchable database to allow taxpayers to calculate their potential taxes. Calculators must be provided at a minimum for property, sales and use, business and occupation (B&O), vehicle, and other business taxes and must be specific to the rate for the taxing district in which the taxpayer resides. The calculator may only be used for educational purposes and does not have a legal effect on taxes due.
 
Taxing districts must report its current tax rates to DOR by September 30, 2023. Any changes to a taxing districts tax rates must be reported to DOR within 30 days.
 
The following taxes and rates must be included in the database:

• state and local sales and use taxes;
• state and local regular and excess property taxes;
• state and local business taxes including, but not limited to, B&O taxes, public utility taxes, unemployment compensation taxes, and industrial insurance premiums;
• state and local real estate excise taxes; and
• state and local motor vehicle taxes and fees.

 
The database must contain information, or links to information, on additional selective sales taxes, selective business taxes, and in-lieu of property taxes.
 
The database must be able to be accessed by and accessed from the state expenditure information website.