The Washington County annual budget process is guided by the State of Oregon's Local Budget Law. The law establishes standard procedures for preparing, presenting and administering the budget, and provides for citizen involvement in preparing the budget and public exposure of the budget before its formal adoption.
The County has the following Budget Committees:
- Washington County Budget Committee
- Service District for Lighting Budget Committee
- ESPD/URMD Budget Committee (Enhanced Sheriff Patrol District/Urban Road Maintenance District)
- North Bethany CSDR Budget Committee (County Service District for Roads)