Key Takeaways
- $200 Certificate of Formation filing fee (Form Online (sos.wa.gov)), paid to the Washington Secretary of State
- Washington has no personal income tax; B&O Tax on gross receipts applies at the LLC level; $70 Annual Report; no franchise tax
- Annual Report (Online (sos.wa.gov)) due within Last day of LLC's anniversary month each year of formation, $70 fee; $25 late fee; administrative dissolution if delinquent late penalty
- Operating agreement not legally required in Washington, but strongly recommended — particularly important for defining business classification affecting B&O Tax rates
- Must designate a Washington registered agent with a physical Washington street address
- No publication requirement
- Same-day filing available through LLC Attorney at no markup on state fees
Washington LLC formation requires a $200 Certificate of Formation fee — note that Washington uses 'Certificate of Formation' rather than 'Articles of Organization' — processed online at sos.wa.gov in 2–3 business days. The Annual Report ($70) is due in the LLC's anniversary month each year. Washington has no state personal income tax, but the Business and Occupation (B&O) Tax applies to gross receipts at the LLC level. This guide covers every step and cost, with fast filing from $49.
Who Should Form an LLC in Washington?
Washington's economy — anchored by technology, aerospace, healthcare, agriculture, and maritime industries — makes it one of the most active states for LLC formation on the West Coast. An LLC is the right structure for tech entrepreneurs, freelancers, real estate investors, and small business owners seeking personal liability protection.
Washington's no-income-tax environment means LLC pass-through income is not taxed at the state level for members. This is a significant advantage for high-income members compared to states with top income tax rates of 8–13%. However, Washington's B&O Tax on gross receipts is an entity-level obligation that applies regardless of whether the LLC is profitable.
Washington's technology sector — centered in Seattle, Bellevue, and the broader Puget Sound region — drives high demand for startup LLCs. Seattle's density of venture capital, accelerators, and established technology companies creates a favorable environment for new business formation, and the LLC structure is the preferred entity for most early-stage companies.
When Are You Required to Form an LLC in Washington?
Forming a Washington LLC becomes necessary when you are taking on financial or legal risk in your business. If you are signing contracts, hiring employees, holding assets, or serving clients, operating without an LLC exposes your personal assets to every business claim.
Washington businesses must obtain a state Business License from the Department of Revenue before conducting business — this requirement applies immediately upon formation. Establishing your LLC through the Secretary of State and then registering with the Department of Revenue for your Business License, B&O Tax, and sales tax are the first two critical compliance steps.
What's Unique About Washington LLCs?
Washington calls its formation document a 'Certificate of Formation' rather than 'Articles of Organization' — a naming distinction worth noting when searching for forms or instructions. The filing fee is $200, which is on the higher end for LLC formation fees nationally.
Washington's Business and Occupation (B&O) Tax is one of the most distinctive features of doing business in the state. Unlike a personal income tax, the B&O Tax applies to the LLC's gross receipts regardless of profitability — an LLC with $500,000 in revenue and operating at a loss still owes B&O Tax on that revenue. Most Washington LLCs must register with the Department of Revenue and file B&O Tax returns.
Washington requires most businesses to obtain a state Business License ($90 one-time fee) through the Department of Revenue before conducting business. This license activates your Unified Business Identifier (UBI) number, which is required for B&O Tax and sales tax registration. This is distinct from the LLC formation filing with the Secretary of State.
Key facts:
- Washington's Business and Occupation (B&O) Tax is unique — it applies to gross receipts regardless of profitability, meaning even LLCs that operate at a loss owe B&O Tax on revenue
- Annual Report filed annually
- No state personal income tax — LLC pass-through income is not taxed at the member level in Washington
- B&O Tax on gross receipts (0.138%–1.75%) — paid by the LLC itself regardless of profitability; requires Department of Revenue registration
Selecting a Name for Your Washington LLC
Your Washington LLC name must be distinguishable from all existing entities in the Secretary of State database. It must include 'Limited Liability Company,' 'LLC,' or 'L.L.C.' Search at sos.wa.gov before filing. A name reservation ($30, 180-day hold) is available to lock in your name while you prepare your Certificate of Formation.
If you operate under a name different from your LLC's legal name, Washington trade names are registered with the Secretary of State at the state level for $5 — one of the most affordable DBA registration fees in the country. This statewide registration is straightforward and centralized.
When Should You Consult an Attorney for Your Washington LLC?
You don't typically need a lawyer for a simple, single-member Washington LLC. But professional advice is essential if you have multiple owners, complex ownership percentages, high-liability risks, intellectual property, or are seeking outside funding. A lawyer makes sure your operating agreement fully protects your interests from day one.
It is highly recommended to seek professional counsel in the following scenarios:
- Multiple members or investors: You need a customized operating agreement to outline ownership stakes, voting rights, dispute resolution, and exit strategies. Off-the-shelf templates rarely cover these contingencies.
- High-risk industries: If your business faces significant liability exposure (manufacturing, construction, consulting), an attorney helps ensure the corporate veil is not pierced.
- Complex assets and IP: If your business will own patents, trademarks, or real estate, a lawyer ensures these assets are properly transferred and protected under the LLC.
- Raising capital or adding partners: If you plan to seek venture capital or issue equity to employees, you may need a different business structure entirely, such as a C-Corporation.
- State and local requirements: Washington's B&O Tax classification and Seattle's local business regulations create complexity that benefits from professional guidance. An attorney can help structure your Washington LLC, determine the correct B&O Tax classification, and ensure operating agreements reflect Washington's WULLCA default rules.
Unlike formation-only services, LLC Attorney gives you on-demand access to licensed attorneys: flat-fee consultations in 30-minute increments, no retainer. You can talk to a licensed attorney about Washington's specific requirements before and after you file.
Designating a Registered Agent
Every Washington LLC must maintain a registered agent with a physical Washington street address. The registered agent receives service of process and official state correspondence during normal business hours. P.O. boxes are not accepted.
Using a professional registered agent keeps your personal address off the publicly searchable sos.wa.gov database. If your registered agent becomes unreachable without updating the SOS, Washington can administratively dissolve your LLC. LLC Attorney provides registered agent service in Washington as part of its formation package.
If the state is unable to deliver legal notices to your registered agent, Washington can administratively dissolve your LLC without additional warning.
Filing the Necessary Formation Documents
To form a Washington LLC, file your Certificate of Formation with the Washington Secretary of State at sos.wa.gov. The filing fee is $200. Online filings process in 2–3 business days. Your Certificate must include the LLC's name, registered agent name and Washington address, and the LLC's principal office address.
Washington does not require member or manager names in the Certificate of Formation. Once approved, print and store your confirmation — you will need it for your Department of Revenue Business License application, bank account opening, and most license applications.
Member-Managed vs. Manager-Managed: What to Choose
When you file Form Online (sos.wa.gov), you must choose a management structure. This decision cannot be left blank.
Member-managed means all LLC owners share authority over day-to-day decisions. Every member can sign contracts, open accounts, and act on behalf of the company. This is the right choice for small teams where all owners are actively involved in running the business.
Manager-managed means one or more designated managers run the company's operations. Managers can be members or outside appointees. This structure works best when your LLC has passive investors, when operational roles differ significantly between members, or when you want to limit decision-making authority to a smaller group.
Your management structure is declared on Form Online (sos.wa.gov) and can be modified later through your operating agreement. If you are the only member and you will run the business yourself, choose member-managed. If you have investors who are not involved in operations, choose manager-managed.
Filing an Initial Annual Report
After formation, register your LLC with the Washington Department of Revenue for a state Business License ($90) and activate your UBI number. This is required before conducting business in Washington and enables B&O Tax and sales tax registration.
Your first Annual Report is due by the last day of your LLC's anniversary month approximately 12 months after formation. The Annual Report ($70) is filed online at sos.wa.gov. Missing the anniversary-month deadline triggers a $25 late fee. Continued delinquency can lead to administrative dissolution.
Your Washington LLC Operating Agreement (Strongly Recommended)
Your operating agreement does not need to be filed with the Washington Secretary of State. Keep it with your company records and give a copy to every member.
A complete operating agreement covers: member rights and responsibilities, ownership percentages, profit and loss distribution, management structure, voting procedures, and dissolution rules. Washington permits written or oral operating agreements, but a written agreement is essential for opening a business bank account and protecting member rights under Washington law.
A generic template may not account for Washington's default LLC rules under the Washington Uniform Limited Liability Company Act (WULLCA). Washington-specific drafting ensures your agreement addresses member rights, management, and the B&O Tax classification correctly. LLC Attorney drafts operating agreements tailored to Washington's requirements.
Obtaining an EIN and Setting Up a Business Bank Account
An EIN from the IRS is required for Washington LLCs with more than one member, for LLCs that hire employees, and for opening a business bank account. Apply free at irs.gov/ein — the online application processes immediately, Monday–Friday 7 a.m.–10 p.m. Eastern.
Open a dedicated business bank account as soon as your EIN is issued. Commingling personal and business funds is the primary way Washington courts have found personal liability for LLC members. Bring your Certificate of Formation, EIN confirmation, operating agreement, and UBI number to the bank.
Registering for Washington State Taxes and Business Licenses
Your federal EIN does not automatically register you with Washington state agencies. Depending on your business type, you may need to register for:
- Washington sales and use tax (Washington Department of Revenue, if you sell taxable goods or services in Washington) — dor.wa.gov
- Washington employer payroll taxes (Washington Employment Security Department, if you are hiring Washington employees) — esd.wa.gov
- Washington B&O Tax and sales tax registration — required for virtually all Washington LLCs conducting business in the state
Failure to register when required results in back taxes, penalties, and interest.
What to Do After Forming Your Washington LLC
After forming your Washington LLC, key ongoing compliance obligations include:
- Annual Report: $70, due by last day of anniversary month at sos.wa.gov — $25 late fee if missed
- B&O Tax returns: filed with WA Department of Revenue on monthly, quarterly, or annual schedule
- Washington sales tax collection: required if selling taxable goods or services in Washington
- No Washington personal income tax on LLC pass-through income
- Maintain your registered agent on file with the Secretary of State
Cost to Start an LLC in Washington
Washington LLC formation has a higher formation fee but no personal income tax. The table below covers all state fees you are likely to encounter:
| Fee | Amount | Notes |
|---|---|---|
| Certificate of Formation (Form Online (sos.wa.gov)) | $200 | Standard processing: Online: 2–3 business days; mail: 2–3 weeks; verify at Washington Secretary of State for current times |
| Annual Report (Online (sos.wa.gov)) | $70 | Due within Last day of LLC's anniversary month each year; $25 late fee; administrative dissolution if delinquent late penalty |
| Certificate of Formation | $200 | One-time formation fee paid to Washington Secretary of State |
| Annual Report | $70 | Due by the last day of the LLC's anniversary month; $25 late fee if missed |
| B&O Tax | 0.138%–1.75% | Gross receipts tax paid by the LLC; rate depends on business classification |
| Registered Agent (professional service) | $100–$300/yr | LLC Attorney registered agent service available |
| Business Name Reservation | $30 | Holds name for 180 days |
| Trade Name (DBA) / DBA | $5 (state-level trade name registration) | Washington trade names are registered with the Secretary of State at the state level.; fee varies |
| Certificate of Amendment (Online (sos.wa.gov)) | $30 | To change LLC name later |
| Legal / Tax Advisory | Varies | On-demand attorney consults at LLC Attorney |
How to Form a Washington LLC Step by Step
If You Do It Yourself
Choose a business name that meets Washington's requirements.
Reserve your name if you need time to prepare (optional).
Designate your Washington registered agent.
Decide your management structure before you open the form.
Download the current version of Form Online (sos.wa.gov) from the Washington Secretary of State website.
Complete Form Online (sos.wa.gov) carefully.
Submit Form Online (sos.wa.gov) and pay the $200 filing fee.
Wait for your Certificate of Formation to be approved.
Receive and store your stamped Certificate of Formation.
Draft your operating agreement.
File your initial Annual Report (Online (sos.wa.gov)) within Last day of LLC's anniversary month each year.
Apply for your federal EIN with the IRS.
Open a dedicated business bank account.
Register for Washington state taxes.
Pay your Washington annual state taxes and fees by the correct deadlines.
Set annual compliance reminders for every year going forward.
- Annual Report: $70, due by last day of anniversary month at sos.wa.gov — $25 late fee if missed
- B&O Tax: 0.138%–1.75% on gross receipts, filed with WA Department of Revenue
- Washington sales tax collection: required if selling taxable goods or services in Washington
- No Washington personal income tax on LLC pass-through income
If LLC Attorney Does It for You
Submit your information
Name, management structure, registered agent preference, and target formation date. No forms to find or download.
We handle everything
LLC Attorney files your Certificate of Formation, drafts your operating agreement, handles your EIN application, and covers same-day filing if needed.
Receive your documents
Approved Certificate of Formation, EIN confirmation, and operating agreement through your client portal. Annual compliance reminders included.
What You Actually Get When You Form Your Washington LLC with LLC Attorney
Washington LLC formation costs $200 to the state, but an advertised $0 filing is never actually free. Once you add a professional Washington registered agent, a written operating agreement (essential for banking and protecting member rights), and your federal EIN, the realistic all-in cost typically lands between $275 and $500.
Included with LLC Attorney formation:
- Same-day or 24-hour Washington filing at no markup on the state fee. Most services charge extra to expedite.
- An attorney-drafted operating agreement, customized, not an auto-generated template.
- Access to attorney-trained Business Success Advisors at no charge, to guide entity and structure decisions.
- Optional flat-fee attorney consultations (no retainer) when your situation needs a licensed attorney.
- One account to manage ongoing Washington compliance: annual report filing and mail scanning.
A complete Washington LLC startup positions you for compliance with the state's unique B&O Tax requirements and ensures immediate Department of Revenue registration.
Starting Your Washington LLC with LLC Attorney
Washington LLC formation costs $200 with a $70 Annual Report due in your anniversary month each year. Washington's no-income-tax environment is offset by the B&O Tax on gross receipts — proper registration with the Department of Revenue is required from day one. LLC Attorney handles Washington LLC formation and registered agent service starting at $49.
LLC Attorney handles Washington LLC formation starting at $49. Same-day filing is available at no markup on state fees. On-demand, flat-fee attorney consultations in 30-minute increments — no retainer — cover operating agreement drafting, entity type questions, and state tax planning. Everything you need for Washington, without a traditional law firm retainer. See our full pricing for all service tiers.
Frequently Asked Questions
Washington LLC filings processed online at sos.wa.gov typically take 2–3 business days. Mail filings take 2–3 weeks. Washington does not offer a standard expedited processing tier at the SOS level.
Washington LLCs pay no state personal income tax — Washington has no income tax. However, the LLC itself pays Washington's Business and Occupation (B&O) Tax on gross receipts at 0.138%–1.75% depending on classification. The Annual Report is $70, due in your anniversary month. Most Washington LLCs must also register for sales tax with the Department of Revenue.
Single-member Washington LLCs are disregarded entities federally — there is no Washington personal income tax on pass-through income. However, the LLC still owes Washington B&O Tax on gross receipts at applicable rates. The Annual Report ($70) applies to both single-member and multi-member Washington LLCs.
Washington requires most LLCs to obtain a state Business License through the Department of Revenue — this is distinct from a local license. The state Business License ($90 one-time fee via dor.wa.gov) activates your UBI number for B&O Tax and sales tax registration. Local governments may also require separate business licenses.
A Washington LLC can hire employees. You will need an EIN from the IRS, register with Washington Employment Security Department for payroll taxes, and comply with Washington employment law requirements. LLC Attorney's formation packages include EIN filing.
To change your Washington LLC name, file an Amendment online at sos.wa.gov for $30. If you use a trade name, update that registration separately with the Secretary of State. The form is Online (sos.wa.gov) and the fee is $30.
To dissolve a Washington LLC, file a Certificate of Dissolution online at sos.wa.gov and close Washington tax accounts with the Department of Revenue, including B&O Tax and sales tax accounts. Washington processes online filings in 2–3 business days.
Missing the Washington Annual Report deadline triggers a $25 late fee. Continued delinquency results in administrative dissolution. Reinstatement requires filing all delinquent reports and paying outstanding fees and penalties. Failure to register for or remit B&O Tax results in penalties and interest from the Department of Revenue.
If the Washington Secretary of State cannot deliver legal notices to your registered agent, the state can administratively dissolve your LLC without additional warning. A professional registered agent service ensures a qualified person is available at a physical Washington address during business hours to receive any legal documents on your behalf.
Washington does not legally require an LLC operating agreement, but it is strongly recommended. Without one, your LLC is governed by Washington's default LLC statute (RCW Chapter 25.15), which may not reflect your intended management structure. Banks require a written operating agreement to open a business account.