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Filing Shortlist

Washington shortlist · foreign registration

2 Best Foreign Registration Services in Washington (2026)

Filing Shortlist cut the Washington field of foreign registration services down to WA Registered Agent.org ($199) and Mainstay Filing ($199), in that order for 2026. WA Registered Agent.org is the first pick because the Washington registration is $199 and includes year one as agent, with $99 a year after that.

From the Filing Shortlist editorial team

Rank1

Top pick on this page

1. WA Registered Agent.org: best for companies adding just Washington

Filing work: $199. State fee: added. Agent from year two: $99 a year

Editor score9.2out of 10

WA Registered Agent.org takes the top spot because $199 above the state fee gets the company registered in Washington, and the agent renews at $99.

The registered office is an in-state street address supplied by the plan, and any papers served on the company show up as scans in your online account.

Across three years its total is under Mainstay Filing's, and that counts for a lot in our scoring.

In the price

  • The registration filing
  • A first year as your registered agent

Good

  • $199 for the service, state fee extra
  • An agent price of $99 in year two
  • Year one as your registered agent is covered

Watch for

  • Washington only; your home state needs its own agent
  • The EIN application is an extra charge ($99)

Rank2

Same price in every state

2. Mainstay Filing: best for companies that work in more than one state

Service charge $199, state fee extra; agent service costs $149 annually after year one

Editor score8.7out of 10

Mainstay Filing makes the list at number two because the fee is $199 plus the state's own, with a free first year as registered agent, and the price is identical in every state.

Past the free first year, agent service runs $149 a year, and that holds in every state.

WA Registered Agent.org undercuts it by $100 across three years, which leaves Mainstay Filing second on cost.

In the price

  • The foreign registration handled on your behalf
  • Registered agent service is free for the first year
  • Legal papers served on the company scanned and uploaded the same business day at no charge

Good

  • $199 service fee, with the state's fee added
  • No charge for registered agent service in year one
  • Papers served on the company are scanned the same business day at no charge
  • The same price in each of the fifty states

Watch for

  • The agent is $149 a year after year one, $50 above WA Registered Agent.org
Visit Mainstay FilingPartner link. We may earn money if you buy. Read the full Mainstay Filing review

The 2 picks side by side

RankCompanyShortlist scoreService priceSecond yearSuitsGo
1 WA Registered Agent.org 9.2 $199 $99/yr The smallest agent renewal on this list Visit WA Registered Agent.orgPartner link. We may earn money if you buy.
2 Mainstay Filing 8.7 $199 $149/yr Companies that operate across state lines Visit Mainstay FilingPartner link. We may earn money if you buy.

Each number out of 10 is our own mark, drawn from the weighted criteria on How we rank, and not a customer rating.

Washington foreign registration service pricing in 2026: first year, renewals, three-year total

CompanyFirst yearSecond yearThird yearThree-year totalAgent in year one
WA Registered Agent.org$199$99$99$397Included
Mainstay Filing$199$149$149$497Free

Every price comes from the company's own pages as of November 12, 2026. The $180 Washington registration fee comes on top of each row and is left out of the totals.

How the cut was made

Filing Shortlist puts 28% of the weight on three-year price and 28% on what the price covers. The remaining 44% goes to renewal terms, fit for the state and price clarity, and for Washington the deciding factor was three-year price.

WA Registered Agent.org adds up to $397 over three years, which is $100 below Mainstay Filing. Both services include year one, which left the renewal price to settle the order.

Every criterion and weight is set out on How we rank.

Registering a foreign LLC in Washington: fee, form and office

Registration goes to the Washington Secretary of State, Corporations & Charities Division on the Foreign Registration Statement. The state fee is $180. Along with the form, Washington expects certificate of existence (good standing) or similar document, no older than 60 days when you file.

Each year after that, the company files the annual report for $70, due last day of your registration month.

What to have ready before you file

  • Certificate of existence (good standing) or similar document, dated within 60 days of filing.
  • The company's exact legal name and its formation date in the home state.
  • A registered agent at a street address in the state. Every company on this shortlist can be that agent.
  • Payment of the $180 state fee with the filing.
  • A reminder in your own calendar for the annual report and its $70 fee.

Common questions about Washington foreign registration services

Must an LLC from another state register in Washington?

It must, once it does business in the state.

What is the full price of a foreign LLC registration in Washington?

The state fee is $180, and service fees run $199.

Does Washington ask for proof of good standing from home?

It does. The state wants certificate of existence (good standing) or similar document, dated no more than 60 days before the filing.

Does a registered foreign LLC still need a registered agent?

Yes. The company keeps a registered agent in the state, at a street address there, for as long as it stays registered.

Which foreign registration services made this shortlist?

WA Registered Agent.org ($199) and Mainstay Filing ($199), listed from the top pick down.

Which service leads the Washington foreign registration shortlist?

WA Registered Agent.org, because registering costs $199 plus the state fee, with the first registered agent year covered, then $99 a year for the agent.

More from us

Where the figures come from

  1. Washington Secretary of State, Corporations & Charities Division (checked again August 2026)
  2. Washington Secretary of State, Corporations & Charities Division (checked again August 2026)
  3. Washington yearly filing: Annual report, official source (checked again October 2026)
  4. Washington report due date (checked again August 2026)
  5. Washington formation fee: Filing fee, official source (checked again October 2026)
  6. Washington formation fee: Filing fee, official source (checked again October 2026)
  7. Washington registered agent statute (checked again October 2026)
  8. Washington SOS, register a foreign LLC online (checked again October 2026)
  9. Washington SOS, fee schedules and priority services (checked again October 2026)
  10. RCW 23.95.520, activities that are not doing business (checked again October 2026)
  11. RCW 23.95.505, consequences of not registering (checked again October 2026)
  12. RCW 23.95.510, foreign registration statement (checked again October 2026)
  13. Washington SOS, registered agents (checked again October 2026)
  14. Pulled from WA Registered Agent.org: pricing and service pages, November 12, 2026
  15. Pulled from Mainstay Filing: Washington service page, November 12, 2026