How to Start a Business in Washington
Washington is home to over 620,000 small businesses that employ nearly 1.5 million workers and represent 99.5% of all businesses in the state.
In This Article
The Complete Guide
How to Start a Business in Washington — 12 Steps
This is a full walkthrough: entity selection, state registration, federal tax IDs, licenses, banking, insurance, and ongoing compliance. Every step includes the official Washington links, fees, and timelines.
Cost depends on your structure. A sole proprietorship may cost nothing to start. An LLC costs $200 to file online. A corporation costs $180. Step 3 walks through every option.
Washington: Key Business Facts
Updated: Feb 2026- LLC Filing Fee (Online)
- $200
- Sole Proprietorship / DBA
- $15
- Corporation Filing
- $180
- Processing Time
- 5 business days
- Expedited Option
- $100 / 2 business days
- State Income Tax
- None
- Sales Tax Rate
- 6.5%
- Gross Receipts Tax
- Yes
- Franchise / Annual Tax
- None
- Filed With
- Washington Secretary of State
- State Business License
- Required
- Last Verified
- February 24, 2026
Local licenses: Most cities in Washington require a separate city business license. Seattle, Tacoma, and Bellevue each have their own licensing requirements and fees that apply in addition to the state license.
What It Takes to Start a Business in Washington
Washington requires every business to obtain a state business license through the Department of Revenue, regardless of structure. LLCs file their Certificate of Formation with the Washington Secretary of State for $200 online, with standard processing in about 5 business days.
The state has no personal or corporate income tax, but it does impose a Business and Occupation (B&O) tax on gross receipts. Understanding these unique tax rules before you launch will save you from costly surprises.
Validate Your Business Idea in Washington
Research whether your idea fits Washington's strongest industries before investing time and money. The state's top sectors include:
- Technology and software (home to Amazon, Microsoft, and thousands of startups)
- Aerospace and advanced manufacturing (Boeing's largest production facilities)
- Agriculture and food processing (top U.S. producer of apples, hops, and cherries)
Contact the Washington Small Business Development Center (SBDC) for free one-on-one consulting and market research assistance. Their advisors help with feasibility analysis, competitive research, and early financial projections at no cost.
Pro Tip
Write a Business Plan
Draft a business plan that covers your target market, revenue model, startup costs, and 12-month financial projections. Banks and SBA lenders require a written plan before approving any business loan or line of credit.
Follow our business plan guide for a simple template that covers all the sections investors and lenders expect. Focus on realistic revenue assumptions tied to Washington's local market data.
Pro Tip
Choose Your Business Structure in Washington
Most founders in Washington choose an LLC because it combines personal liability protection with pass-through taxation and avoids the double taxation of a C-Corp. Filing an LLC costs $200 online at the Washington Secretary of State.
Your four main options are Sole Proprietorship, LLC, S-Corp, and C-Corp. Each has different liability, tax, and management implications, so review the Washington LLC formation guide for details. See the full comparison below.
Pro Tip
Business Structure Comparison — Washington
Full comparison guide| Structure | Washington Filing Cost | Personal Liability | How You're Taxed | Best For |
|---|---|---|---|---|
| Sole Proprietorship | $15 (DBA) | ❌ None | Personal income tax. No separate return. | Freelancers, consultants, side hustles testing an idea with no employees. |
| LLC Most Common | $200 online | ✅ Personal assets protected | Pass-through by default. Elect S-Corp when profitable. | Most small businesses. Best balance of liability protection, flexibility, and tax options. |
| S-Corporation | ~$200 + IRS election | ✅ Personal assets protected | Pass-through. Owners pay themselves a salary — can reduce self-employment tax. | Profitable businesses (typically $50K+ net) where payroll tax savings justify the complexity. |
| C-Corporation | $180 | ✅ Personal assets protected | Corporate tax rate (21% federal). Double taxation on dividends. | Startups planning to raise VC funding, issue stock options, or eventually go public. |
| General Partnership | Free / No State Filing | ❌ None — all partners personally liable | Pass-through. Each partner reports share on personal return. | Two or more owners who trust each other and don't need liability protection. |
Which should you choose? Most first-time founders in Washington pick an LLC — it protects your personal assets without the complexity of a corporation. If you're not sure, consult a CPA or business attorney before filing. Read the full Washington LLC guide →
Choose and Register Your Business Name
Search the Washington business name database to confirm your desired name is available. Your name must be distinguishable from any existing registered entity in the state.
If forming an LLC, Washington law requires your name to include "Limited Liability Company," "LLC," or "L.L.C." You can reserve a name for 180 days by filing a name reservation with the Secretary of State.
Pro Tip
Important
Check Washington Business Name Availability
Search the official Washington Secretary of State database before you file.
Register Your Business with Washington State
File your Certificate of Formation with the Washington Secretary of State online for $200 (or $180 by mail). Standard online processing takes approximately 5 business days, and you can add expedited processing for an additional $100.
You must designate a registered agent with a physical Washington address. See our Washington registered agent guide for affordable options starting around $100 per year.
Submit your Initial Report at the same time as your Certificate of Formation to avoid the separate $10 filing fee. After approval, you will receive your Certificate of Formation as proof of your legal entity.
Pro Tip
Important
File Online with Washington Secretary of State
Official Washington business registration portal. Standard processing: 5 business days.
Get Your Federal EIN from the IRS
Apply for your Employer Identification Number (EIN) for free at the IRS website. The online application takes about 10 minutes, and you receive your EIN immediately upon completion.
You need an EIN to open a business bank account, hire employees, and file federal taxes. Even single-member LLCs should get an EIN to keep personal and business finances separate.
Pro Tip
Get Your Washington Licenses and Permits
Washington requires a state business license for nearly all businesses. Requirements vary by industry, but most Washington businesses need:
- State Business License (required for all businesses, $50 through Washington Department of Revenue)
- Sales Tax Permit (included with your business license application if you sell taxable goods or services)
- Professional License (required for contractors, healthcare providers, real estate agents, and other regulated fields through the WA Department of Licensing)
- City Business License (required by most Washington cities, fees range from $25 to $200+)
- Employer Registration (register with the Employment Security Department before hiring your first employee)
Use the DOR Business Licensing Wizard to find your exact requirements.
Pro Tip
Important
Open a Business Bank Account
Bring your EIN confirmation, Certificate of Formation, operating agreement, and government-issued ID to open a dedicated business checking account. Separating personal and business finances is essential for maintaining your LLC's liability protection.
Compare fee structures and features in our best business bank accounts guide. Many Washington-based credit unions like BECU offer free business checking with no monthly minimums.
Pro Tip
Set Up Accounting and Understand Washington Taxes
Washington has no personal or corporate income tax, which is a significant advantage for business owners. However, the state imposes a Business and Occupation (B&O) tax on gross receipts, with rates ranging from 0.13% to 3.3% depending on your business classification.
Register with the Washington Department of Revenue to set up your B&O tax and sales tax accounts. Most businesses file B&O tax returns monthly or quarterly, depending on revenue volume.
The state sales tax rate is 6.5%, but local rates push the combined rate as high as 10.5% in some areas. Set up accounting software from day one to track your gross receipts and sales tax obligations accurately.
Pro Tip
Important
Get Business Insurance in Washington
Washington requires employers to carry workers' compensation insurance through the Department of Labor and Industries (L&I). This is mandatory for all employees, with no exceptions for small employers.
General liability insurance is recommended as a baseline for every Washington business, even if you have no employees. Compare quotes in our business insurance guide to find coverage that fits your industry and risk level.
Pro Tip
Important
Build Your Online Presence
Claim your free Google Business Profile to appear in local search results and Google Maps. This is the fastest way to start attracting Washington customers searching for your services.
Build a simple website using one of the platforms in our website builder guide. A single-page site with your services, location, and contact information is enough to launch.
Pro Tip
Stay Compliant After Forming in Washington
After forming, keep your Washington business in good standing by meeting these ongoing requirements:
- Annual Report (due by the end of your formation month each year, fee: $60, file at the Secretary of State portal)
- State Business License Renewal (renew annually through the Department of Revenue)
- B&O Tax and Sales Tax Returns (filed monthly or quarterly depending on your revenue)
- Registered Agent (maintain a registered agent with a physical Washington address at all times)
- City/Local Licenses (renew any city business licenses on their respective schedules)
Missing the annual report deadline results in late fees and potential administrative dissolution. Track all deadlines with StartupOwl's compliance calendar.
Pro Tip
Important
Washington Business Background & Context
State-specific data to help you plan — taxes, economy, funding, and what to expect after you form.
Frequently Asked Questions
What to Do Next
Once you've registered your Washington business, take these steps to set up for success.
Form Your Washington LLC
File your Certificate of Formation with the Washington Secretary of State for $200 online. Get step-by-step filing instructions.
Start Your LLC →
Get a Washington Registered Agent
Every Washington LLC needs a registered agent with a physical state address. Compare affordable options starting at $100 per year.
Compare Agents →
Open a Business Bank Account
Separate your personal and business finances with a dedicated checking account. Compare the best options for new businesses.
Compare Accounts →
Apply for Your Washington Business License
Washington requires a $50 state business license for nearly all businesses. Apply through the Department of Revenue.
Apply Now →
Get Business Insurance
Protect your Washington business with general liability coverage and meet workers' comp requirements if you have employees.
Compare Insurance →
Disclaimer: This guide is for informational purposes only and does not constitute legal or tax advice. Requirements change — always verify current fees and requirements directly with Washington Secretary of State and the IRS before filing.
Ready to Form?
Get your Washington business registered with ZenBusiness — choose your structure, file the paperwork, and stay compliant from day one.
About the Author
Director of Entrepreneurial Strategy
Jennifer is a former founder who built and sold a boutique B2B logistics company in her thirties. She understands the emotional and strategic toll of building a business from the ground up without a massive safety net. She is deeply connected to the Atlanta startup ecosystem and is passionate about equitable funding.
Was this article helpful?