First LLC Guide › Washington
Starting an LLC in Washington: what you should know first
Filing a Washington LLC costs $200. The Annual Report costs $70 a year. Our pick is Mainstay Filing; $937 covers three years.
By kind of owner
- Side hustle
- Quiet-year cost: $269 in year 2 with Mainstay Filing, including the $70 state report in that year.
- Online business
- Required registered agent. The address has to be a physical street address in Washington. P.O. boxes and private mailboxes are not accepted.
- Startup
- Filing: Certificate of Formation - Limited Liability Company with the Washington Secretary of State. Write the operating agreement before you open the bank account.
- First-time owner
- Report due: Last day of the entity's anniversary month.
Questions
Best LLC formation service in Washington for a first-time owner?
Mainstay Filing: $399 in year 1 including the $200 filing fee, $269 in year 2.
Sources
- Washington formation fee: Filing fee, official source read 2026-10-01: www.sos.wa.gov/corporations-charities/frequently-asked-questions-faqs/fee-scheduleexpedited-service, checked October 1, 2026
- Washington formation fee: Filing fee, official source read 2026-10-01: www.sos.wa.gov/corporations-charities/business-entities/online-filing-instructions/start-domestic-wa-limited-liability-company-llc-online, checked October 1, 2026
- Washington Secretary of State, Corporations & Charities Division (multira state research spine): ccfs.sos.wa.gov/, checked August 12, 2026
- Washington Secretary of State, Corporations & Charities Division (multira state research spine): www.sos.wa.gov/sites/default/files/2024-04/4.2024%20-%20AR%20-%20Profit%20-%20M&M%20-%20Corp%20Sole.pdf, checked August 12, 2026
- Washington yearly filing: Annual report, official source read 2026-10-01: www.sos.wa.gov/corporations-charities/business-entities/online-filing-instructions/file-annual-report-multiple-entity-types-online, checked October 1, 2026
- Washington report due date (multira state research spine, due dates verified 714/714): app.leg.wa.gov/RCW/default.aspx?cite=23.95.255, checked August 12, 2026
- Washington registered agent statute (RCW 23.95.415): app.leg.wa.gov/rcw/default.aspx?cite=23.95.415, checked October 20, 2026