The Washington Registered Agent (2026): 6 Procedures and the 2 Best Agents
Mainstay Filing ($149 a year) and WA Registered Agent.org ($99 a year) measured best, in that order, for appointing a registered agent in Washington in 2026. 6 procedures document what Washington requires of a registered agent, who may serve, which address passes and how the agent is recorded.
A commercial registered agent listed with the Secretary of State, a noncommercial agent (any person or business with a Washington address), or the holder of a named position in the company. The agent consents in advance. The source is RCW 23.95.415.
Procedure3
Procedure 3: Choose a compliant address
The address has to be a physical street address in Washington. P.O. boxes and private mailboxes are not accepted.
TipEngaging a service keeps a home address out of the public record.
Procedure4
Procedure 4: Settle who will be the agent
An owner who passes the tests above may serve; one of the ranked agents costs $99 to $149 a year.
Procedure5
Procedure 5: Enter the appointment
New companies list the agent on the Certificate of Formation - Limited Liability Company; a later replacement means a new filing with the Washington Secretary of State.
Specimen: Specimen: sos.wa.gov, logged October 2026
Procedure6
Procedure 6: Update when details change
State correspondence about the annual report arrives with the registered agent. Its price is $70 every year, with the due date given as last day of the entity's anniversary month.
Specimen: Specimen: sos.wa.gov, logged October 2026
Agent and state costs
Cost item
Goes to
Amount
Agent service
The provider
$99 to $149 a year
From year two
The provider
$99 to $149 a year
Annual report
State office
$70 every year
Method for the three-year state row: take the filing fee, add the reports due in years two and three, then add any yearly minimum tax. Service fees stay in their own rows.
Why Mainstay Filing comes first
prevailed on procedures the price performs (28% of the reading), with close behind.
An agent usable in any state outscored WA Registered Agent.org's lower price.
Review questions on Washington
Is an LLC in Washington permitted to operate without a registered agent?
Yes. Every LLC must name a registered agent with an in-state street address.
Can I be my own registered agent?
Possibly. Procedures 2 and 3 show whether both rules are met.
Can I change my registered agent later?
Yes. A switch requires a change filing at the Washington Secretary of State (procedure 5).
What does a registered agent cost in Washington?
$99 to $149 a year among the ranked agents.
What does the LLC pay the state each year?
Yearly it is the annual report at $70.
Which registered agent would you choose?
Mainstay Filing, because an agent at $149 a year that remains usable when the company adds states. Next: WA Registered Agent.org.
Washington Secretary of State, Corporations & Charities Division readings were recorded from ccfs.sos.wa.gov; the last repeat observation was in August 2026.
Washington Secretary of State, Corporations & Charities Division readings were recorded from sos.wa.gov; the last repeat observation was in August 2026.
Washington yearly filing: Annual report, official source readings were recorded from sos.wa.gov; the last repeat observation was in October 2026.
Washington report due date readings were recorded from app.leg.wa.gov; the last repeat observation was in August 2026.
Washington formation fee: Filing fee, official source readings were recorded from sos.wa.gov; the last repeat observation was in October 2026.
Washington formation fee: Filing fee, official source readings were recorded from sos.wa.gov; the last repeat observation was in October 2026.
Washington registered agent statute readings were recorded from app.leg.wa.gov; the last repeat observation was in October 2026.
Entry November 13, 2026: Mainstay Filing, Washington service page
Entry November 13, 2026: WA Registered Agent.org, pricing page