Independent comparison of registered agent services for Washington LLCs and corporations.
Reviewed against Washington Secretary of State, Corporations and Charities Division guidance · Updated 2026-04-30
Washington LLCs depend on their registered agent for service of process under R.C.W. §25.15.021, and the Washington Secretary of State, Corporations and Charities Division mails annual report reminders only to that agent’s address. The provider chosen at formation often stays in place for years, so the long-tail reliability of the service matters as much as the year-one price. Below, the four registered agent services we tested for Washington-based LLCs and corporations in 2026.
In Washington, the registered agent’s job is heavier than the statutory floor implies. Washington’s $60 annual report is due by the end of the formation anniversary month, and Washington imposes a Business and Occupation (B&O) tax based on gross receipts — there is no state income tax, but the B&O tax functions similarly and applies to LLCs. The practical reason this matters when picking a provider: the B&O gross-receipts tax overlay — separate from the $60 annual report, and Department of Revenue notices for B&O delinquency arrive at the registered agent’s address.
For Washington businesses, the three traits that separate good providers from passable ones are (1) reliable same-day handling of service of process from Washington state and federal courts, (2) accurate, deadline-aware reminders calibrated to Washington’s specific annual cycle (annually by the end of formation anniversary month), and (3) an online dashboard that shows scanned mail within hours, not days. All four services we ranked clear the R.C.W. §25.15.021 eligibility bar; the meaningful differences are in execution. Northwest leans privacy-first, Mainstay Filing leans value-first, ZenBusiness leans formation-bundle-first, and LegalZoom leans brand-and-phone-support-first.
The Washington-specific filings that hinge on having a reliable registered agent:
Across all of these dates, the registered agent is the routing point for Washington Secretary of State, Corporations and Charities Division mail, state tax notices, and service of process. A reliable provider turns the Washington compliance calendar into a passive maintenance task; an unreliable one turns it into a recurring fire drill.
Physical-address-only operations; mail forwarding; same-day filing.
Best balance of price and features for most businesses. Includes mail forwarding, online dashboard, and same-day filing at half the cost of premium providers.
Pairs RA with LLC formation packages; useful if forming a new entity from scratch.
Largest brand; phone-based support; bundled legal services beyond RA.
Washington-specific option: Washington Registered Agent operates exclusively in Washington and specializes in same-state filings. Best for businesses that want a state-focused provider with local-only operations.
| Filing | Cost | Renewal |
|---|---|---|
| LLC formation | $200 online / $180 paper | annually by the end of formation anniversary month |
| Annual Report | $60 | annually by the end of formation anniversary month |
| DBA / Fictitious Name | $5 | Every 5 years |
| Change of Registered Agent | $20 | — |
Source: Washington Secretary of State, Corporations and Charities Division · Statute reference R.C.W. §25.15.021
For most Washington LLCs, Northwest Registered Agent ranks first on privacy and reliability. Mainstay Filing earns the Editor's Choice for value at $99/year with the same core features. State-specific options like Washington Registered Agent specialize in same-state filings.
Commercial services range $50–$250 per year. Mainstay Filing is $99/yr; Northwest is $125/yr; ZenBusiness is $199/yr; LegalZoom is $249/yr.
Yes. File a Statement of Change of Registered Agent with the Washington Secretary of State, Corporations and Charities Division for $20. Most commercial services handle the change paperwork for you.
National services like Mainstay Filing and Northwest operate across all 50 states with consistent pricing and online dashboards. State-specific providers (like Washington Registered Agent) focus exclusively on one state and often handle same-state-only filings faster.
Yes — under R.C.W. §25.15.021, every Washington LLC must designate and maintain a registered agent with a physical street address in Washington.
Yes — if you are a Washington resident with a physical street address in Washington and are available during normal business hours to accept service of process. Most commercial services exist because keeping a personal address on the public record is a privacy concern.
Same-day with every service in the table above. The provider issues a confirmation letter you include with the Articles of Organization filed with the Washington Secretary of State, Corporations and Charities Division.
RA Ratings independently reviews registered agent services. We may earn a commission from sponsored links; this does not affect rankings or editorial selection. Verify all filing fees with the Washington Secretary of State, Corporations and Charities Division before submitting paperwork.