2 Best Foreign Registration Services in Washington (2026)
LLC Review Desk's 2026 picks for foreign registration services in Washington, favorite first, are Mainstay Filing ($199) and WA Registered Agent.org ($199). Mainstay Filing is our favorite, because $199 gets the Washington registration filed, year one as registered agent costs nothing, and after that it's $149 a year.
By the LLC Review Desk editorial team
Position 1
Our top pick in Washington
1. Mainstay Filing: best for owners working in more than one state
$199 for the service, and the state fee is extra; the agent is $149 a year from year two
Our score
9.4out of 10
9.4 out of 10
Our favorite is Mainstay Filing, because it's $199 beyond the state fee in any state, and the first registered agent year is included.
Once year one is over, you pay $149 a year for the agent, whichever state you picked.
Over three years it costs $100 more than WA Registered Agent.org, and for us the extra things it handles are worth that.
In the price
Registration paperwork prepared and sent in
Registered agent service is free in year one
Legal papers served on the company are scanned within the business day at no cost
What we like
The same price in all fifty states
$199 for the service, plus the state's fee
Same-business-day scans of papers served on the company, no charge
Your first year of registered agent service is free
Trade-offs
After year one the agent is $149 a year, $50 more than WA Registered Agent.org
2. WA Registered Agent.org: best for companies adding only Washington
Service fee $199, state fee extra; $99 a year for the agent from year two
Our score
8.9out of 10
8.9 out of 10
Coming in second is WA Registered Agent.org, because it's $199 plus the state fee, with your first registered agent year included, then $99 a year for the agent.
You get a street address in the state for your registered office, and any papers served on the company are scanned into your online account.
In the price
Registration prepared and filed
The first year of registered agent service
What we like
Second-year agent price: $99
Registers the company for $199, with the state fee on top
Your first year as registered agent is free
Trade-offs
Washington only; your home state needs its own agent
The 10-point scores are ours. They come from the criteria on How we rank and don't use customer ratings.
What Washington foreign registration services cost in 2026: year one, renewals and three years
Service
First year
Second year
Third year
Three-year total
Agent covered in year one
Mainstay Filing
$199
$149
$149
$497
Free
WA Registered Agent.org
$199
$99
$99
$397
Included
We took each price from the company's own pages on November 12, 2026. On top of every row, Washington charges a $180 registration fee, which isn't in these totals.
What decided the order
In Washington, filings in the price decided the order. If you're curious about the weights, three-year cost is 29%, filings in the price is 29% and renewal price, state fit and up-front totals share 42%.
Registering in a second state means working with two states, so one company at one price for both won the coverage score over WA Registered Agent.org.
You can read every criterion and weight on How we rank.
Registering a foreign LLC in Washington: fee, form and who to send it to
You register through the Washington Secretary of State, Corporations & Charities Division, using the Foreign Registration Statement. The state charges $180. Washington also wants certificate of existence (good standing) or similar document that is no more than 60 days old.
After that, plan on the annual report each cycle ($70) by last day of your registration month.
Get these ready first
Certificate of existence (good standing) or similar document, issued within 60 days of when you file.
Your company's full legal name, exactly as registered at home, and the date it was formed there.
A registered agent with a street address in the state. Any service on this page can do it.
The $180 state fee to pay with the filing.
A reminder for yourself about the annual report and its $70 fee.
Your questions about Washington foreign registration services
Do I have to register my out-of-state LLC in Washington?
If it does business there, yes.
What does registering a foreign LLC in Washington come to?
The state charges $180, and services charge $199.
Does Washington want paperwork from my home state?
It does: certificate of existence (good standing) or similar document, no more than 60 days old.
Do I still need a registered agent after I register?
Yes. You keep a registered agent with a street address in the state as long as the company stays registered.
Which foreign registration services did we review here?
Mainstay Filing ($199) and WA Registered Agent.org ($199), with our favorite first.
Who's the best choice for foreign registration in Washington?
Mainstay Filing, because you pay $199 on top of the state's fee, your first year as registered agent is free, and the price is the same in every state.