How to Form an LLC in Washington — Step-by-Step Guide
Everything you need to file your Washington Certificate of Formation, register for your Business License, and stay compliant with the state's unique B&O Tax.
Updated 2026-08-17
Key Takeaways
- Forming an LLC in Washington means filing a Certificate of Formation with the Secretary of State through its Corporations and Charities Filing System (CCFS) — Washington's name for the document other states call Articles of Organization.
- Washington has no state personal income tax, but nearly every LLC must separately register for a state Business License and pay the Business and Occupation (B&O) Tax on gross receipts.
- Budget beyond the state filing fee for a registered agent, an operating agreement, and your Business License Application before your LLC is truly ready to operate.
- Washington requires an Annual Report every year, due in your LLC's anniversary month, to stay in good standing.
- CompanySage offers 24-hour filing at no extra cost on every Washington formation package, so you don't pay a rush fee to move faster than the state's standard timeline.
Why Form an LLC in Washington
Washington's economy is anchored by technology, aerospace, healthcare, agriculture, and maritime industries, which makes it one of the more active states for new LLC formation on the West Coast. An LLC gives founders personal liability protection while keeping the business's tax treatment simple, which is why it's the default structure for tech entrepreneurs, freelancers, real estate investors, and small business owners across the state.
The state's most-cited advantage is that it has no personal income tax, so members of a Washington LLC don't pay state income tax on their share of pass-through profits — a real difference compared to states with top income tax rates in the high single digits or more. That said, the tradeoff is Washington's Business and Occupation (B&O) Tax, an entity-level gross receipts tax that applies whether or not the LLC is actually profitable, so it's worth understanding both sides of that equation before you assume Washington is automatically the cheaper state to operate in.
Washington's technology sector, concentrated in Seattle, Bellevue, and the broader Puget Sound region, also means a steady flow of new startup LLCs. The concentration of venture capital, accelerators, and established tech employers in the area creates a favorable environment for new business formation, and the LLC remains the preferred entity structure for most early-stage companies there.
Step-by-Step: How to Form an LLC in Washington
Forming a Washington LLC involves more than one state filing. Here's the full sequence from name search through your first year of compliance.
Search and choose your LLC name
Your name must be distinguishable from every other entity on file with the Secretary of State and must include "Limited Liability Company," "LLC," or "L.L.C." As of our last review, you can search name availability directly through the Secretary of State's online system, and reserve a name for a set hold period for a modest fee if you're not ready to file yet.
Appoint a Washington registered agent
Every Washington LLC must maintain a registered agent with a physical Washington street address (no P.O. boxes) who is available during normal business hours to accept service of process and official state correspondence. You can act as your own registered agent if you meet those requirements, or use a professional registered agent service to keep your home address off the public record and reduce the risk of missing a document while you're away from the office.
File your Certificate of Formation
File your Certificate of Formation with the Washington Secretary of State through its online Corporations and Charities Filing System (CCFS). As of our last review, the filing fee is $200 and online filings typically process in a few business days, while mailed filings can take a few weeks. Your Certificate needs your LLC's name, your registered agent's name and Washington address, and your LLC's principal office address — Washington does not require you to list members or managers on the form itself.
Draft an LLC operating agreement
Washington doesn't legally require an operating agreement, but it's strongly recommended. Without one, your LLC is governed by Washington's default LLC statute, which may not match how you actually intend to run the business. Banks generally ask for a written operating agreement before opening a business account, and it's especially useful in Washington for documenting how members intend to handle the B&O Tax classification. See our guide to LLC operating agreements for what to include.
Get your EIN from the IRS
An Employer Identification Number (EIN) is required for multi-member LLCs, any LLC that hires employees, and for opening a business bank account. The application is free directly through the IRS and typically issues immediately online. Read our step-by-step EIN guide if you'd rather have CompanySage handle the application for you.
Register for your Business License and B&O Tax
After formation, register with the Washington Department of Revenue for a state Business License. As of our last review, this is a $90 one-time fee that activates your Unified Business Identifier (UBI) number, which you'll need for B&O Tax and sales tax registration. This step is separate from — and in addition to — your Certificate of Formation, and most Washington LLCs need it before they can legally start doing business. Local jurisdictions may layer on an additional local business license.
Open a business bank account
Keep business and personal funds separate from day one. Bring your approved Certificate of Formation, EIN confirmation, operating agreement, and UBI number to the bank. Commingling funds is one of the most common ways courts find a basis to pierce an LLC's liability protection.
File your Annual Report and stay compliant
Your first Annual Report is due roughly a year after formation, by the last day of your LLC's anniversary month. As of our last review, the fee is $70, and missing the deadline triggers a $25 late fee, with continued delinquency risking administrative dissolution. You'll also need to keep up with B&O Tax filings and sales tax collection on an ongoing basis.
Washington LLC Costs
Washington's formation fee is on the higher end nationally, but the tradeoff is no state personal income tax. Here's what to expect at the state level:
| Item | Washington State Fee | Notes |
|---|---|---|
| Certificate of Formation | $200 | One-time fee to file with the Secretary of State |
| Name reservation | $30 | Optional; holds your LLC name before you file |
| Business License Application | $90 | One-time fee to the Department of Revenue; activates your UBI number |
| Annual Report | $70 | Due every year by the last day of your anniversary month |
| B&O Tax | 0.138%–1.75% of gross receipts | Ongoing; rate depends on business classification |
| Trade name (DBA) registration | $5 | If operating under a name different from your LLC's legal name |
Beyond the state's own fees, most owners also budget for a registered agent service and an operating agreement. Together with your EIN (free from the IRS), a realistic all-in cost to get a Washington LLC fully set up and compliant typically runs a few hundred dollars above the bare $200 state filing fee. CompanySage formation packages start at $99 plus applicable state fees — see our full pricing for what's included at each tier.
Timeline and Expedited Filing
As of our last review, Washington processes online Certificate of Formation filings in roughly 2 to 3 business days; mailed filings can take a few weeks. Washington does not publish a standard paid rush tier at the Secretary of State level for LLC formation the way some states do.
CompanySage includes 24-hour filing at no extra cost on every formation package, so once your order is submitted and reviewed, we move on it right away rather than charging a separate rush fee on top of your state filing fee. See our same-day LLC formation page for how that works.
Ongoing Compliance in Washington
Forming your Certificate of Formation is the starting line, not the finish line. Washington LLCs need to stay current on a handful of recurring obligations:
- Annual Report: $70, due by the last day of your LLC's anniversary month; a $25 late fee applies if you miss it.
- B&O Tax returns: filed with the Department of Revenue on a monthly, quarterly, or annual schedule depending on your liability.
- Sales tax collection: required if you're selling taxable goods or services in Washington.
- Registered agent maintenance: keep a current registered agent on file with the Secretary of State to avoid administrative dissolution.
Washington's B&O Tax applies even if you're not profitable
Because the Business and Occupation Tax is based on gross receipts rather than net income, a Washington LLC that spends more than it earns in a given year can still owe B&O Tax on the revenue it brought in. Confirm your business classification and applicable rate with the Washington Department of Revenue so you're not caught off guard at filing time.
CompanySage's compliance plans, starting at $14.99/month, bundle registered agent service, annual report filing, and mail scans so you're not tracking every Washington deadline manually. See our full registered agent guide for how that works if you'd rather not serve as your own agent.
Washington LLC Formation FAQs
Have a Washington-specific question that isn't answered above? Our formation team can walk you through the details of forming and maintaining an LLC in Washington — see the questions below for a start, or browse our general guide to forming an LLC for steps that apply nationwide, or our sibling guides for California and Texas LLC formation.
Frequently Asked Questions
How much does it cost to form an LLC in Washington?
As of our last review, Washington charges $200 to file a Certificate of Formation with the Secretary of State. Add a $30 name reservation if you want to lock in your LLC name ahead of time, and budget for a $70 Annual Report each year after formation. CompanySage formation packages start at $99 plus applicable state fees.
What is Washington's Certificate of Formation, and is it the same as Articles of Organization?
It's the same idea, different label. Washington calls its formation document a Certificate of Formation rather than Articles of Organization, which some other states use. It's the filing that legally creates your LLC with the Washington Secretary of State.
Do I need a Washington Business License in addition to forming my LLC?
Yes. Forming your LLC with the Secretary of State and registering for a state Business License with the Department of Revenue are two separate steps. As of our last review, the Business License Application costs $90 and activates your Unified Business Identifier (UBI) number, which you need for B&O Tax and sales tax registration. Local jurisdictions may require an additional local license.
Does Washington have a state income tax on LLC profits?
No. Washington is one of the states with no personal income tax, so LLC members don't pay Washington state income tax on their share of pass-through profits. Washington instead taxes business gross receipts through its Business and Occupation (B&O) Tax, which the LLC itself pays regardless of profitability.
What is Washington's B&O Tax, and does my LLC owe it?
The Business and Occupation (B&O) Tax is a gross receipts tax that most Washington LLCs owe, based on the business's classification rather than its profit. As of our last review, rates generally range from roughly 0.138% to 1.75% of gross receipts depending on classification. Because it applies to revenue rather than net income, even an LLC operating at a loss can still owe B&O Tax. Confirm your classification and rate with the Washington Department of Revenue.
When is Washington's LLC Annual Report due?
Washington's Annual Report is due by the last day of your LLC's anniversary month each year — the month in which your Certificate of Formation was originally approved. As of our last review, missing the deadline triggers a $25 late fee, and continued delinquency can lead to administrative dissolution of your LLC.
How long does Washington LLC formation take?
As of our last review, Washington processes online Certificate of Formation filings in roughly 2 to 3 business days, while mailed filings can take a few weeks. CompanySage builds 24-hour filing at no extra cost into every formation package once your order is placed and reviewed, so the wait you experience is often shorter than filing on your own.
Do I need a registered agent for my Washington LLC?
Yes. Washington law requires every LLC to maintain a registered agent with a physical Washington street address (P.O. boxes don't qualify) who is available during normal business hours to accept service of process and official state mail. You can serve as your own registered agent if you meet those requirements, or use a professional service to keep your home address off the public record.
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