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Kept simple · Washington

2 Best Foreign Registration Services in Washington (2026), Kept Simple

We rank foreign registration services in Washington for 2026 this way: WA Registered Agent.org ($199) and Mainstay Filing ($199). Every option pays Washington $180. Three years of service run $397 to $497.
Charter Simple editors

At a glance

Registration fee
$180
Certificate from home?
Yes (60 day age limit)
After registering
$70, annual report
Our pick
WA Registered Agent.org then Mainstay Filing

Washington: the order

The order follows five checks. Three-year cost comes first, then what the price covers. See method.
1 Ranked first

1. WA Registered Agent.org: best for adding only this state

Register for $199. Agent renewal $99

WA Registered Agent.org ranks first in Washington. $199 files the registration, and the agent renews at $99.

It costs less than Mainstay Filing over three years. Cost carries the most weight.

Includes

  • Washington registration filing
  • Agent for year one

Good

  • $199 to register
  • Agent renews at $99
  • No agent charge in year one

Against

  • The home state needs its own agent
2 Works anywhere

2. Mainstay Filing: best for adding more states

Register for $199. Agent renewal $149

Mainstay Filing takes second place because Washington's fee plus $199 gets you registered, with no registered agent bill until year two.

It ranks lower because three years cost $100 more than WA Registered Agent.org, and cost has the largest weight.

From year two the registered agent renews at $149.

Includes

  • The registration filing
  • Registered agent, no charge the first year
  • The same price anywhere

Good

  • The first agent year is covered
  • The same fee in every state
  • Service fee $199

Against

  • Agent renews at $149, $50 above WA Registered Agent.org

Prices

#CompanyYear oneRenewalThree yearsIncludes
1 WA Registered Agent.org $199$99/yr$397washington registration filing; agent for year one View WA Registered Agent.orgPartner link. We may earn money if you buy.
2 Mainstay Filing $199$149/yr$497the registration filing; registered agent, no charge the first year; the same price anywhere View Mainstay FilingPartner link. We may earn money if you buy.
Read November 13, 2026. Three years means year one and two renewals.

Key questions

When must an out-of-state LLC register?

Registration comes first. Business in Washington comes second.

sos.wa.gov as of October 2026, our only source here

What does registration cost?

$180 to the state. $199 more if someone files for you.

Three years of state fees, registration included: $320. sos.wa.gov as of October 2026, our only source here

Which form, and where?

You submit one form, the Foreign Registration Statement, to the Washington Secretary of State, Corporations & Charities Division.

Include certificate of existence (good standing) or similar document issued within the last 60 days.

Is there a filing that repeats?

Next comes the annual report, at $70.

Date set by the state: last day of your registration month.

Why this order?

On three-year cost (38%), WA Registered Agent.org leads.

Five checks: three-year cost (38%), work included (27%), readable pricing (13%), renewal steadiness (11%) and state coverage (11%).

Mainstay Filing runs $100 higher over three years than WA Registered Agent.org's $397.

Method

Washington registration rules, sourced

RequirementRule or amountConfirm
Registration fee$180sos.wa.gov as of October 2026, our only source here
Home-state certificateYes, 60 dayssos.wa.gov as of October 2026, our only source here
Annual report$70sos.wa.gov as of October 2026, our only source here
Three-year state total$320The rows above, added
Each row cites its official source. The last row is our own addition of the filing, two reports and any minimum tax.

Also asked

Do I still need an agent at home?

Yes, in most cases. A provider active in every state, such as Mainstay Filing, can cover home and this state together.

What are the three-year totals?

WA Registered Agent.org is $397, while Mainstay Filing is $497, with state fees on top.

Are the fees official?

State fees come from Washington's official documents. Service prices come from each company's price page. Both are dated here.

Does the law require one?

No law requires a service. It is a paid convenience.

Can I hire someone to register?

All of them do. Only the service fee differs.

Which foreign registration service should I use in Washington?

WA Registered Agent.org, because it charges $199 with first-year agent service included, then $99 a year. Then Mainstay Filing.

Sources

  1. Charter Simple keeps Washington Secretary of State, Corporations on file from ccfs.sos.wa.gov, confirmed August 2026, and nothing more
  2. Charter Simple keeps Washington Secretary of State, Corporations on file from sos.wa.gov, confirmed August 2026, and nothing more
  3. Charter Simple keeps Washington yearly filing: Annual report on file from sos.wa.gov, confirmed October 2026, and nothing more
  4. Charter Simple keeps Washington report due date on file from app.leg.wa.gov, confirmed August 2026, and nothing more
  5. Charter Simple keeps Washington formation fee: Filing fee on file from sos.wa.gov, confirmed October 2026, and nothing more
  6. Charter Simple keeps Washington formation fee: Filing fee on file from sos.wa.gov, confirmed October 2026, and nothing more
  7. Charter Simple keeps Washington registered agent statute on file from app.leg.wa.gov, confirmed October 2026, and nothing more
  8. Charter Simple keeps Washington SOS, register a foreign on file from sos.wa.gov, confirmed October 2026, and nothing more
  9. Charter Simple keeps Washington SOS, fee schedules and on file from sos.wa.gov, confirmed October 2026, and nothing more
  10. Charter Simple keeps RCW 23.95.520, activities that are on file from app.leg.wa.gov, confirmed October 2026, and nothing more
  11. Charter Simple keeps RCW 23.95.505, consequences of not on file from app.leg.wa.gov, confirmed October 2026, and nothing more
  12. Charter Simple keeps RCW 23.95.510, foreign registration statement on file from app.leg.wa.gov, confirmed October 2026, and nothing more
  13. Charter Simple keeps Washington SOS, registered agents on file from sos.wa.gov, confirmed October 2026, and nothing more
  14. WA Registered Agent.org pricing page, read November 13, 2026
  15. Mainstay Filing Washington service page, read November 13, 2026