Government and statute sources
- RCW 23.95.415 (designation of registered agent); address rule RCW 23.95.410; entities required to maintain an agent RCW 23.95.405; change by entity RCW 23.95.430. https://app.leg.wa.gov/rcw/default.aspx?cite=23.95.415. Updated October 29, 2026.
- Washington Secretary of State, Corporations & Charities Division: Statement of Change/Designation of Registered Agent fee. https://www.sos.wa.gov/corporations-charities/frequently-asked-questions-faqs/fee-scheduleexpedited-service. Updated October 29, 2026.
- Statement of Change/Designation of Registered Agent. https://www.sos.wa.gov/sites/default/files/2025-12/6.2025%20-%20Statement%20of%20Change%20or%20Designation%20of%20Agent%20-%20Non-Commercial%20Registered%20Agent%20%28Fillable%20Form%29.pdf. Updated October 29, 2026.
- U.S. Bureau of Labor Statistics, Business Employment Dynamics, Establishment Age and Survival, Table 7 (data through March 2025). https://www.bls.gov/bdm/bdmage.htm. Updated October 29, 2026.
- U.S. Census Bureau, Business Formation Statistics (state annual and monthly series). https://www.census.gov/econ/bfs/index.html. Updated October 29, 2026.
Other sources
- Mainstay Filing pricing, registered agent and FAQ pages. Updated October 29, 2026.
How figures are checked
State fees, forms and deadlines were read from the statute or the agency's own fee schedule and recorded with a citation. The Washington set was compiled and verified on August 12, 2026. Prices for agent services were read from each provider's own page, with a saved copy of the page. Mainstay Filing's prices and what they include were read from its pricing, registered agent and FAQ pages on October 20, 2026. Provider pages are cited by name rather than linked.
Where a figure could not be confirmed from an official or first-party page, it is labeled unverified on the page where it appears.