LLC Review Desk's 2026 picks for LLC services in Washington, favorite first, are WA Registered Agent.org ($199) and Mainstay Filing ($199). WA Registered Agent.org is our favorite, because forming in Washington is $199 plus the state fee, and your first year as registered agent is included, then $99 a year.
By the LLC Review Desk editorial team
Position 1
Number one here
1. WA Registered Agent.org: best for a Washington LLC that will stay put
$199 to form, then $99 a year for the agent, with the state fee on top
Our score
9.2out of 10
9.2 out of 10
Our favorite is WA Registered Agent.org, because the Washington formation costs $199 over the state's fee, with the registered agent free the first year, and keeping the agent is $99 a year.
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.
The annual report isn't part of its published price, so you send it to Washington yourself every year.
This is where it beats Mainstay Filing: what you pay over three years.
In the price
LLC filing done for you
Your registered agent for year one
What we like
Then $99 a year to keep the agent
A $199 service price plus the state fee
Covers your first year of registered agent service
2. Mainstay Filing: best for formation, agent and annual report in one simple price
$199 a year, and the state fee goes on top ($399 at checkout)
Our score
9.0out of 10
9.0 out of 10
Coming in second is Mainstay Filing, because $199 a year covers the Washington formation, a year as your registered agent and the annual report, and it renews at $199.
When your plan renews, Mainstay files the annual report for you. Washington charges $70 every year for it, and the date is last day of the entity's anniversary month, and a late one costs $25 more. Mainstay passes the state's fee along at cost.
WA Registered Agent.org is $200 cheaper over three years, so Mainstay Filing comes second on cost.
In the price
Preparation and filing of the formation document
Your registered agent all year
Your annual report, prepared and filed for you
Your EIN application, taken care of
What we like
Renews at $199, no add-ons
The EIN application is included
One yearly price of $199 that includes the annual report
Washington's fee is passed through at cost
Trade-offs
After year one, its agent costs $100 a year more than WA Registered Agent.org's
LLC Review Desk gives each score out of 10 itself, based on the criteria on How we rank. No customer ratings are involved.
What Washington LLC services cost in 2026: year one, renewals and three years
Service
First year
Second year
Third year
Three-year total
Handles the annual report too
WA Registered Agent.org
$199
$99
$99
$397
No
Mainstay Filing
$199
$199
$199
$597
Yes
We took each price from the company's own pages on November 12, 2026. On top of every row, Washington charges a $200 filing fee, which isn't in these totals.
How the order came together
Here's how we scored it: three-year cost and filings in the price are worth 29% each, and renewal price, state fit and up-front totals split the other 42%. In Washington, three-year cost made the difference.
WA Registered Agent.org comes to $397 over three years, which is $200 less than Mainstay Filing. Mainstay would file the annual report too, but you can do it yourself for the state fee, so the lower price won here.
You can read every criterion and weight on How we rank.
The Washington LLC filing fee and form, from the state
Heads up: the Washington Secretary of State takes $200 when you file the Certificate of Formation - Limited Liability Company. Every service below adds that fee at cost.
What a Washington LLC needs after it is formed
There's one recurring item: the annual report, every year, by last day of the entity's anniversary month. The state asks for $70. A late filing adds $25. Every LLC must name a registered agent with an in-state street address.
Your questions about Washington LLC services
How much does forming an LLC in Washington set you back?
The state charges $200 to file, and services charge $199.
What paperwork makes the LLC official?
You send the Certificate of Formation - Limited Liability Company to the Washington Secretary of State.
Does the Washington formation form ask me to name a registered agent?
Yes. You list a registered agent when you file and keep one on record, using a street address in Washington.
Is there paperwork after the LLC is formed?
Yes, one item: the annual report. It comes every year, by last day of the entity's anniversary month, and the state asks $70.
Is the EIN included in the price?
With Mainstay Filing, yes; it comes with the yearly price. WA Registered Agent.org tacks on $99 for it. You can also ask the IRS for an EIN yourself, free of charge.
Who should I use to form my Washington LLC?
WA Registered Agent.org, because $199 for formation on top of the state fee, then $99 a year for the agent.