To form an LLC in Washington State, file a Certificate of Formation with the Secretary of State for $200 online, appoint a registered agent with a Washington street address, and then complete three follow-ups: an Initial Report within 120 days, a federal EIN from the IRS, and a state business license through the Department of Revenue. The entire state filing can be done in a single session through the Secretary of State’s online portal, and Washington charges no personal or corporate income tax, though your LLC will owe Business and Occupation (B&O) tax on gross receipts.
Pick a Name That Will Clear the State’s Check
Your name has to include “Limited Liability Company,” “L.L.C.,” or “LLC.”1Washington State Legislature. Washington Code 23.95.300 It also has to be distinguishable from every other registered or reserved entity name on the Secretary of State’s records. Adding a comma or swapping “LLC” for “L.L.C.” doesn’t count as distinguishable; if the core words match an existing filing, yours gets rejected.
Check availability for free using the Corporations and Charities Filing System (CCFS) search.2Washington Secretary of State. Corporations and Charities System If you’re not ready to file but want to hold a name, a name reservation costs $30 and lasts 180 days.
Watch out for words like “bank,” “insurance,” and “trust.” Using them without the right license can get the filing flagged or rejected, and the Secretary of State may ask for proof of licensing from the relevant regulator.
Line Up a Registered Agent
Every Washington LLC needs a registered agent to receive legal documents and state correspondence.3Washington State Legislature. Washington Code 23.95.415 – Designation of Registered Agent The agent needs a physical street address in Washington staffed during normal business hours. A P.O. box won’t work.
You can serve as your own agent if you keep steady office hours at a fixed Washington address. Many owners don’t, either because they travel or because they don’t want a home address on the public record. Commercial registered agent services generally run $100 to $300 per year and give you a stable address plus document handling. Whoever you pick has to formally consent during the filing.
File the Certificate of Formation
The Certificate of Formation is the document that actually creates your LLC. Washington requires it to include:4Washington State Legislature. Washington Code 25.15.071 – Formation, Certificate of Formation
- The LLC’s full legal name with its designator
- The registered agent’s name and street address
- The principal office address where records are kept
- A dissolution date, if you want one (otherwise the LLC is perpetual)
- The organizer’s name and address
The statute doesn’t ask you to specify member-managed versus manager-managed on the certificate, but the online form will. Washington defaults to member-managed, meaning every owner shares equal authority over day-to-day decisions. Manager-managed structures put one or more designated managers in charge while other members stay passive.
File through the Corporations and Charities Filing System. Online filings cost $200 and process faster than paper. If you need it quickly, expedited processing adds $100 and is generally handled within three business days.5Washington Secretary of State. Filings, Forms and Information Once approved, you’ll get a digital confirmation and a stamped copy of the certificate. Save both. They’re your proof the LLC exists.
File the Initial Report Within 120 Days
Washington requires every new LLC to file an Initial Report within 120 days of the Certificate of Formation being accepted.6Washington State Legislature. Washington Code 23.95.255 – Initial or Annual Report for Secretary of State The CCFS portal usually prompts you to complete it during the same session as the certificate, and there’s no reason to wait. The report confirms who manages the LLC and where it operates. Missing the window can trigger administrative dissolution, which revokes your LLC’s legal status. Easy to prevent, messy to fix.
Get an EIN from the IRS
Once the state accepts your Certificate of Formation, apply for a federal Employer Identification Number. You’ll need the EIN to open a business bank account, hire employees, and file federal returns. The IRS issues them free through its online application, and approval is immediate during operating hours.7Internal Revenue Service. Get an Employer Identification Number You have to finish in one sitting; the form can’t be saved and times out after 15 minutes of inactivity. The responsible party needs a Social Security number or ITIN.
Don’t apply before the state has accepted your Certificate of Formation. The IRS may reject or delay the application if the entity doesn’t exist yet on the state side.
A quick note on how the IRS treats your LLC: by default, a single-member LLC is a “disregarded entity,” with income reported on the owner’s personal return, and a multi-member LLC is taxed as a partnership.8Internal Revenue Service. Limited Liability Company (LLC) Either can elect to be taxed as a corporation (Form 8832) or as an S corporation (Form 2553). These elections carry real tax consequences; talk to a tax professional before changing the default.
Register for a Washington Business License and B&O Tax
Washington requires most businesses to apply for a business license through the Department of Revenue, which is separate from the Secretary of State filing.9Washington Department of Revenue. Apply For A Business License When approved, you’ll receive a Unified Business Identifier (UBI), a nine-digit number that ties your business to every state agency.
The application asks for estimated annual gross income and expected employees, which determines the tax accounts the state sets up. Washington has no personal or corporate income tax, but almost every business owes B&O tax, calculated on gross receipts rather than net profit.10Washington Department of Revenue. Business Tax Structure in Washington State The rate depends on your activity: retailing is taxed at 0.471% of gross receipts, and services at 1.5%.11Washington Department of Revenue. State Tax Overview If you sell at retail, you’ll also need to collect and remit sales tax.
The same application handles specialized endorsements for regulated industries. Many Washington cities and counties also require their own local business licenses on top of the state one, so check with the jurisdiction where you’ll physically operate.
Write an Operating Agreement
Washington doesn’t require a written operating agreement. The statute defines the agreement broadly enough to include oral or implied arrangements.12Washington State Legislature. Washington Code 25.15.006 – Definitions Where your agreement is silent, Washington’s LLC Act fills the gap.13Washington State Legislature. Washington Code Chapter 25.15 – Limited Liability Companies The defaults work for simple setups, but they can produce odd results. For example, the default gives every member equal management authority regardless of what they contributed, which gets uncomfortable fast when one member put in $200,000 and another put in $5,000.
A workable operating agreement covers ownership percentages and how profits and losses are split, each member’s capital contributions and whether more can be required later, who has authority to sign contracts or hire staff, how major decisions get voted on, what happens when a member leaves or dies (including how their interest is valued), and whether disputes go to mediation or arbitration before court.
Single-member LLCs benefit too. A written agreement reinforces the legal separation between you and the business, which matters if your liability protection is ever challenged.
Keep the Liability Shield Intact
The point of an LLC is shielding personal assets from business debts, but the protection isn’t automatic. Courts can “pierce the veil” and hold members personally liable if the LLC is treated as a personal account rather than a separate entity.14Washington State Legislature. Washington Code 25.15.061 – Piercing the Veil
Washington applies the same veil-piercing standards used for corporations, with one helpful exception: failing to hold formal member or manager meetings isn’t held against you unless your certificate of formation or operating agreement requires them. That’s a real break compared to corporate practice.
What does put protection at risk is straightforward:
- Commingling funds, meaning writing business checks for personal expenses or treating the LLC’s account as your own
- Undercapitalizing the business so it looks like a sham entity
- Fraud or dishonest dealings, including commitments you know the LLC can’t honor
Open a dedicated business bank account on day one, never pay personal bills from it, and keep the finances cleanly separate. Personal guarantees on business loans create a separate exposure — not through veil-piercing but because you’ve contractually agreed to pay. Read loan documents carefully.
Stay Current with the Annual Report
Once the LLC is active, Washington requires an annual report with the Secretary of State to confirm current management, registered agent, and principal office address.6Washington State Legislature. Washington Code 23.95.255 – Initial or Annual Report for Secretary of State The due date depends on your entity type, so check the Secretary of State’s annual reports page for your specific deadline. You can usually file as early as the prior November.
Missing the deadline triggers late fees and risks administrative dissolution, the same consequence as skipping the Initial Report. If the state dissolves your LLC, you can’t enforce contracts or file lawsuits until you reinstate, which costs more fees and paperwork than the annual report itself. A calendar reminder is the whole fix.
Your B&O obligations run on a separate schedule. The Department of Revenue assigns you a monthly, quarterly, or annual filing frequency based on the revenue estimate you gave at licensing, and those filings happen independent of the Secretary of State’s annual report.
Skip the BOI Filing
If you’ve seen warnings about the federal Beneficial Ownership Information (BOI) report under the Corporate Transparency Act, a domestic Washington LLC can disregard it. As of March 2025, FinCEN published an interim final rule exempting all entities formed in the United States from BOI reporting; the requirement now applies only to foreign entities that register to do business in a U.S. state.15FinCEN.gov. Beneficial Ownership Information Reporting Many online guides haven’t updated, so don’t pay anyone to file a BOI report for your Washington LLC.