Opening an LLC in Washington State takes five core steps: pick a compliant name, appoint a registered agent with a Washington street address, file the Certificate of Formation with the Secretary of State for $180, get a federal EIN, and register with the Department of Revenue for a state business license. Online filings usually clear within a few business days. Washington has no personal or corporate income tax, which keeps the tax side simpler than in most states.1Washington Department of Revenue. Income Tax
Choose a Name
The legal name must include “Limited Liability Company,” “LLC,” or “L.L.C.” and must be distinguishable from every other business already on file. Run your candidates through the Corporations and Charities Filing System (CCFS) on the Secretary of State’s website before you get attached to one. A small tweak in spelling or word order may not be enough to clear the distinguishability check.
You can reserve a name through the CCFS for a limited period while you prepare paperwork, but it’s optional. If you’re ready to file, skip the reservation and go straight to formation.
Appoint a Registered Agent
Every Washington LLC needs a registered agent to accept legal documents and government notices. The agent must have a physical street address in Washington (no P.O. boxes) and be available during normal business hours to accept service of process.2Washington Secretary of State. Registered Agents
You can name yourself or another member at no cost, but your address goes on the public record and you have to be reliably reachable during the workday. A commercial registered agent service typically runs $50 to $150 per year and handles both the availability and the privacy side.
File the Certificate of Formation
The Certificate of Formation is what legally creates the LLC. File it with the Washington Secretary of State online through the CCFS or by mailing the paper form.3Washington Secretary of State. Certificate of Formation – LLC The form asks for:
- The LLC name, including the required designator.
- The registered agent’s name and Washington street address.
- A principal office address (no P.O. boxes).
- Whether the LLC will be member-managed (all owners run it) or manager-managed (designated managers run it).
- Duration. Most LLCs choose perpetual existence, meaning the company continues until members dissolve it.
Fees and Processing Times
The filing fee is $180.4Washington Secretary of State. Limited Liability Company (LLC) / Professional LLC (PLLC) Filing Resource Page Online filings through CCFS usually finish within a few business days. Mail filings take considerably longer.
If you need it faster, the Secretary of State offers expedited service for an additional $100 (three working days) and same-day service at the front counter for an additional $150. If you filed online and later need immediate processing, the same $150 same-day fee applies.5Cornell Law Institute. Washington Administrative Code 434-112-080
Get an EIN From the IRS
An Employer Identification Number is the federal tax ID for your business. You need one if your LLC has employees, has more than one member, or elects to be taxed as a corporation. Single-member LLCs with no employees often get one anyway because most banks require it to open a business account.6Internal Revenue Service. About Form SS-4, Application for Employer Identification Number
Applying online through the IRS website is free and issues the number immediately. Fax applications take roughly four business days. Mailing Form SS-4 takes four to five weeks.7Internal Revenue Service. Instructions for Form SS-4
Draft an Operating Agreement
The operating agreement is the internal rulebook: how profits and losses are split, who decides what, what happens when a member leaves, how disputes get resolved. Washington doesn’t require you to file it with the state and doesn’t prescribe a format.8H2O. LLC Operating Agreement (WA)
Skipping it is where multi-member LLCs get into trouble. Without an agreement, Washington’s default LLC statutes govern your business relationships, and those defaults may not match what you and your partners actually agreed to. A single-member LLC faces less urgency, but a written agreement still helps reinforce the legal separation between you and the business.
Register for State Taxes and a Business License
Washington has no income tax, but your LLC will likely owe the state’s Business and Occupation (B&O) tax, a gross receipts tax calculated on total revenue before expenses.9Washington Department of Revenue. Business & Occupation Tax Rates depend on activity:
- Retailing: 0.471% of gross receipts.
- Wholesaling: 0.484% of gross receipts.
- Manufacturing: 0.484% of gross receipts.
- Services and other activities: 1.5% of gross receipts.
Because the tax hits gross revenue rather than profit, a service-based LLC with $100,000 in gross receipts owes $1,500 in B&O tax regardless of expenses.10Washington Department of Revenue. Business and Occupation (B&O) Tax Washington offers a small business B&O credit that reduces or eliminates the tax for lower-revenue businesses and phases out as revenue grows.
Business License and UBI Number
Most Washington LLCs also need a state business license. You’re required to get one if your gross income is $12,000 or more per year, you plan to hire employees within 90 days, you collect sales tax, or you operate under a trade name.11Washington Department of Revenue. Business Licensing and Renewals FAQs
When you apply through the Department of Revenue’s Business License Application, you receive a Unified Business Identifier (UBI) number. This nine-digit number registers your LLC with multiple state agencies at once and doubles as your tax registration number, business license number, and general state identifier.12Washington Department of Revenue. Apply for a Business License
File the Annual Report Every Year
Every Washington LLC has to file an annual report with the Secretary of State. It’s due by the last day of the month in which your LLC was formed, and you can file up to 180 days before that deadline.13Washington Secretary of State. Annual Reports
The fee is $70. Miss the deadline and your LLC’s status changes to delinquent, adding a $25 penalty on top. Continued failure to file can lead to administrative dissolution, meaning the state shuts down your LLC. Reinstatement is possible but costs more and takes time, so a calendar reminder a few weeks before the anniversary month is worth setting.14Washington Secretary of State. File Annual Report – Multiple Entity Types Online
The report itself is short. It confirms or updates the LLC’s principal office address, registered agent, and the names of members or managers. Filing online through the CCFS takes only a few minutes.