2 Best LLC Services in Washington (2026): The Straight Story
If you need LLC formation services in Washington in 2026, here's the order we'd go in: Mainstay Filing ($199) and WA Registered Agent.org ($199). Whoever you pick, Washington charges $200 to file, and the services run $397 to $597 over three years.
Straight from the LLC Straight Talk editorial team
1. Mainstay Filing: best for handing off the upkeep
$199 a year, plus the $200 state fee
Mainstay Filing is who we'd use first in Washington, because one yearly price of $199 covers the formation, the registered agent and every annual report.
Here's the catch: WA Registered Agent.org costs $200 less over three years, and you'd do more of the paperwork yourself.
You won't file the annual report yourself. Washington still charges $70, billed at cost.
What you get
Formation handled start to finish
Registered agent for a whole year
Annual report done for you
EIN application filed
State fees passed through, no markup
Pluses
$199 a year covers filing, agent and report
You don't pay extra for the EIN
Year two's $199
What's not
$100 a year above WA Registered Agent.org after year one
#2Washington only
2. WA Registered Agent.org: best for a business that never leaves one state
$199 to form, $99 a year after
WA Registered Agent.org comes in second because three years with it total $397, thanks to a $99 renewal.
You're still on the hook for the annual report.
What you get
Washington formation filing
Agent service covered for year one
Pluses
Renewal's $99
Formation fee of $199
The first agent year's included
What's not
You're stuck filing the annual report
The EIN application costs $99 extra
Side by side
#
Who
Year one
Each year after
Three-year total
What you get
1
Mainstay Filing
$199
$199/yr
$597
formation handled start to finish; registered agent for a whole year; annual report done for you
Prices as of November 13, 2026. The state's own fees are in the checklist below.
The questions that matter
How much do I need to start an LLC in this state?
The state takes $200, and a service that files for you in year one adds $199.
Across three years the state collects $340, filing fee included. go check sos.wa.gov, last confirmed October 2026
Which form do I file, and where?
The Washington Secretary of State takes the Certificate of Formation - Limited Liability Company. Once it approves, you've got a company.
Statute: RCW 25.15.071. go check sos.wa.gov, last confirmed October 2026
Does the state make me have a registered agent?
Every LLC must name a registered agent with an in-state street address.
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.
You'll file the annual report every year, and it's $70 each time. Here's the date the state gives: last day of the entity's anniversary month. Don't miss it.
Every line above links to the state's own page. The total's ours: the filing, two reports and any minimum tax.
More questions
Is the EIN application included?
Only Mainstay Filing throws it in. At the others it's $99 (WA Registered Agent.org).
What if I'm late with the report?
Expect a $25 late fee.
What's the three-year damage for each?
Over three years you're looking at $597 at Mainstay Filing, $397 at WA Registered Agent.org, before state fees.
Where do these numbers come from?
Each state fee links to its official page, and each service price comes from the company's own site.
Is a service required?
Not required. The state takes filings from owners.
What's the best LLC service in Washington?
Mainstay Filing is first: the annual report gets filed inside the $199 yearly price, along with formation and the registered agent. Then comes WA Registered Agent.org.