Start a Business in Washington State: State & Local Steps

To start a business in Washington State, you usually choose a business structure, register with the Washington Secretary of State if you form an LLC or corporation, file the Washington Business License Application through the state Business Licensing Service, get a Unified Business Identifier, register with the Department of Revenue for taxes, and add any city or industry licenses you need before you open.

Washington is a little different from many states. There is no state personal or corporate income tax, but most businesses deal with the Department of Revenue because of business and occupation tax, sales tax, and city licensing endorsements. Your UBI number is the thread that connects many of these steps.

Typical startup costs and timing vary, but here is a realistic planning range:

Registration

Your first legal decision is your entity type.

A sole proprietorship is the simplest option. You do not form an entity with the Secretary of State, but you may still need a Washington Business License Application, a UBI number, city license endorsements, and tax registration. If you use a business name that is not your legal name, you register it as a trade name.

A Washington LLC is a common choice for first-time founders because it separates the business from you personally and is simpler than a corporation. You form it by filing a Certificate of Formation with the Washington Secretary of State, Corporations and Charities Division. Filing online is typically around $200, while paper filing is often slightly less, around $180. Processing times change, but online filings are usually faster than mailed filings.

A corporation is formed by filing Articles of Incorporation with the Washington Secretary of State. This can make sense if you plan to issue shares, seek outside investment, or build a company with a more formal ownership structure.

Washington also allows nonprofit corporations, professional entities, and foreign entity registrations for companies formed in another state but doing business in Washington.

Every Washington LLC or corporation must have a registered agent. The agent must have a physical street address in Washington and be available during normal business hours. You can be your own registered agent if you meet those rules, but many founders use a commercial registered agent for privacy and consistency.

Your business name must be distinguishable from existing Washington business names. You can search name availability through the Secretary of State. If you are not ready to file, Washington allows name reservation, typically for 180 days, for a fee that is usually around $30. Many founders skip reservation and simply file the formation documents when ready.

After formation, most businesses file the Washington Business License Application through the state Business Licensing Service, which is run through the Department of Revenue’s My DOR system. This application is what commonly gets you a Washington business license, a UBI number if you do not already have one, DOR tax registration, trade names, employer accounts, and many city or state endorsements.

Taxes

Washington does not have a state personal income tax or traditional corporate income tax. That does not mean it is a no-tax state for businesses.

Most Washington businesses are subject to business and occupation tax, often called B&O tax. This is a gross receipts tax administered by the Washington State Department of Revenue. It is based on your business activity classification, such as retailing, wholesaling, manufacturing, or service and other activities. Rates vary by classification, and small businesses may qualify for credits or relief depending on revenue and activity.

If you sell taxable goods or certain taxable services, you must collect Washington sales tax. The state sales tax rate is 6.5%, and local sales taxes are added on top. The combined rate commonly lands around the high single digits to low double digits, depending on the customer’s location. Washington is destination-based for many sales tax purposes, so the correct rate can depend on where the buyer receives the product or service.

You register for DOR taxes through the Business License Application. After registration, the Department of Revenue assigns your filing frequency. Many businesses file excise tax returns monthly, quarterly, or annually depending on volume and tax type. Your excise tax return may include B&O tax, sales tax, use tax, and other state taxes.

If you hire employees, you also need employer accounts. The Business License Application can help register you with the Employment Security Department for unemployment insurance and with the Department of Labor & Industries for workers’ compensation. Washington employers may also need to handle Paid Family and Medical Leave premiums, WA Cares Fund requirements, payroll withholding for federal taxes, and federal unemployment taxes.

You should also get a federal Employer Identification Number from the IRS. An EIN is free from the IRS. LLCs, corporations, partnerships, and most employers need one. Even if you are a single-member LLC with no employees, banks often ask for it.

Licenses

Washington does not have one simple “all businesses are done” license. Instead, the Business License Application acts as the central starting point for many state and city license registrations.

You generally need to file a Washington Business License Application if you will collect sales tax, gross more than the state’s small-business threshold, hire employees, operate under a trade name, need a city license endorsement, or need a specialty state license endorsement. The Department of Revenue and Business Licensing Service manage this process.

Many cities in Washington require a local business license. Some city licenses are available as endorsements through the state Business Licensing Service. Others must be obtained directly from the city. Seattle, Spokane, Tacoma, Bellevue, Vancouver, and smaller cities may each have their own rules, fees, renewal dates, and thresholds.

Professional and industry licenses depend on what you do. Common examples include:

• Contractors: Washington State Department of Labor & Industries handles contractor registration, bonding, insurance requirements, and many trade-related rules.
• Real estate, vehicle-related businesses, and certain regulated professions: Washington State Department of Licensing is often involved.
• Restaurants and food service: local health departments issue food establishment permits; the Washington State Department of Health and Department of Agriculture may apply in specific food businesses.
• Alcohol: Washington State Liquor and Cannabis Board licenses liquor-related businesses.
• Cannabis: Washington State Liquor and Cannabis Board regulates cannabis licensing.
• Child care: Washington State Department of Children, Youth, and Families licenses many child care providers.
• Cosmetology and salons: Department of Licensing rules commonly apply.
• Agriculture, food processing, and nursery businesses: Washington State Department of Agriculture may be involved.

Before you sign a lease or buy equipment, check both state licensing and your city’s local requirements.

Permits

Permits are usually local and activity-specific. This is where Washington founders can get surprised.

Your city or county may require zoning approval before you operate. This matters for storefronts, warehouses, studios, repair shops, food businesses, short-term rentals, and home-based businesses. If you work from home, ask about home-occupation rules. Cities often limit customer visits, employees on-site, signage, noise, deliveries, and outdoor storage.

If you are building out a space, you may need building permits, electrical permits, plumbing permits, mechanical permits, fire department review, and a certificate of occupancy or final inspection. Restaurants, coffee shops, breweries, salons, fitness studios, day cares, and manufacturing spaces often need extra review before opening.

Food businesses usually work with the local county health department or health district. You may need plan review before construction, a food establishment permit, food worker cards, commissary agreements for mobile food businesses, and inspections.

Sign permits are common in Washington cities. Do not assume your landlord’s approval is enough. Exterior signs, window signs, awnings, and illuminated signs may need city approval.

Environmental permits may apply if you discharge wastewater, handle hazardous materials, disturb land, create air emissions, or operate near shorelines or protected areas. The Washington State Department of Ecology is the key agency for many environmental rules.

Insurance

If you have employees in Washington, workers’ compensation is generally required through the Washington State Department of Labor & Industries. Washington is a state-fund workers’ comp state, so most employers buy coverage through L&I rather than a private insurer. Some owners and officers may be exempt, but you should confirm your exact status before assuming you are not covered.

If your business owns or uses vehicles, you need proper auto insurance. Personal auto coverage may not protect you when the vehicle is used for deliveries, job sites, client visits, or employee driving.

Many Washington businesses also carry general liability insurance, professional liability or errors and omissions coverage, cyber liability, commercial property insurance, product liability, and employment practices liability. Contractors often need specific liability insurance and bonding to register with Labor & Industries.

Insurance is not just paperwork. It can be required by landlords, lenders, clients, marketplaces, and government contracts before you can earn revenue.

Banking

Open a separate business bank account before you start taking payments. It keeps bookkeeping clean, supports liability protection for LLCs and corporations, and makes tax filing much easier.

Washington banks and credit unions usually ask for your EIN, UBI number if available, formation documents, business license information, operating agreement or corporate bylaws, ownership details, and government ID for owners or authorized signers. Sole proprietors may need a trade name registration and EIN or Social Security number, depending on the bank.

Look for a bank or credit union that fits how you will actually operate. If you take cash, branch access matters. If you sell online, payment integrations and low transfer fees matter. If you are a contractor, food business, or retailer, ask about merchant services, remote deposit, payroll support, and lending options.

State Resources

The Washington Secretary of State, Corporations and Charities Division handles LLCs, corporations, nonprofits, annual reports, registered agents, and business entity records.

The Washington State Department of Revenue administers the Business Licensing Service, My DOR, UBI numbers, the Business License Application, B&O tax, sales tax, use tax, and many city license endorsements.

The Washington State Department of Licensing handles driver, vehicle, and several professional and occupational licensing areas. It is also commonly associated with regulated business activities such as dealers and certain personal services.

The Washington State Department of Labor & Industries handles workers’ compensation, workplace safety, contractor registration, electrical rules, wage rules, and several trade-related requirements.

The Washington Employment Security Department manages unemployment insurance and workforce-related employer accounts.

The Washington State Department of Commerce supports economic development, small business programs, exporting, community development, and business growth resources.

Washington Small Business Development Center advisers help with business plans, financing preparation, market research, and startup decisions. They serve entrepreneurs across the state.

SCORE chapters in Washington, including volunteers serving the Seattle area and other regions, provide free mentoring and business workshops.

Local city and county clerk, finance, planning, and health departments are essential for business licenses, zoning, permits, inspections, and local taxes.

FAQs

Do I need a UBI number to start a business in Washington?
Most businesses that register with the Secretary of State or file a Business License Application will receive a Unified Business Identifier. Your UBI is used across state agencies, including the Department of Revenue, Secretary of State, and employer accounts.

Is the Washington Business License Application the same as forming an LLC?
No. An LLC is formed with the Washington Secretary of State by filing a Certificate of Formation. The Business License Application is a separate state process for tax registration, business licensing, trade names, employer accounts, and many city endorsements.

Does Washington have a statewide business license?
Washington uses the Business License Application as a central licensing and registration process, but your actual requirements depend on your activity and location. Many businesses also need city license endorsements or direct local licenses.

Do I pay income tax on my Washington business?
Washington does not have a state personal or corporate income tax, but businesses may owe B&O tax on gross receipts. Retailers and some service providers may also need to collect sales tax.

Can I run a business from home in Washington?
Usually yes, but your city or county may require a home-occupation approval or local business license. Zoning rules may limit signs, customer visits, employees, noise, parking, and inventory storage.

Business Launch Steps

• Choose your business idea, customer, offer, and pricing. Typical timing: 1-7 days.
• Pick your legal structure: sole proprietorship, LLC, corporation, partnership, or nonprofit. Typical timing: 1 day.
• Search your business name with the Washington Secretary of State and check domain and trademark conflicts. Typical timing: same day.
• File your Certificate of Formation or Articles of Incorporation with the Washington Secretary of State, if forming an entity. Typical timing: a few business days online, longer by mail.
• Get an EIN from the IRS. Typical timing: same day when completed online through the IRS.
• Prepare an operating agreement, bylaws, ownership records, and basic bookkeeping setup. Typical timing: 1-3 days.
• File the Washington Business License Application through the Department of Revenue’s Business Licensing Service. Typical timing: a few business days, longer if endorsements need review.
• Receive or confirm your UBI number and DOR tax account. Typical timing: usually tied to registration processing.
• Add trade names and city license endorsements, or apply directly with your city if it does not use the state system. Typical timing: a few days to several weeks.
• Check industry licenses with DOL, L&I, Health, Agriculture, Liquor and Cannabis Board, Ecology, or other agencies. Typical timing: varies widely.
• Confirm zoning, home-occupation approval, health permits, sign permits, buildout permits, and inspections before opening. Typical timing: 1 week to several months.
• Set up workers’ comp, unemployment insurance, payroll, and Paid Family and Medical Leave if hiring. Typical timing: 1-2 weeks.
• Open a business bank account using your EIN, UBI, formation documents, license records, and ownership documents. Typical timing: same day to a few days.
• Buy required and practical insurance before signing contracts or serving customers. Typical timing: a few days.
• Set up sales tax collection, invoicing, bookkeeping, and DOR filing reminders. Typical timing: 1-3 days.
• Launch your website, local listings, payment system, and first customer outreach. Typical timing: 1-2 weeks.
• Make your first sale, save records, and track every filing deadline from day one.

If you want the exact order for your business type, city, and industry, Stratify can turn this into a personalized Washington startup roadmap.

How do I start a business in Washington State?

To start a business in Washington State, choose a structure, register your entity if needed, file the Washington Business License Application, get your UBI, set up tax accounts, and add local or industry licenses before selling. Washington has no state income tax, but many businesses owe B&O tax and sales tax.

1. Choose your business structure and check your name.
2. Form your LLC or corporation with the Secretary of State if needed.
3. Get an EIN if required and open a business bank account.
4. File the Washington Business License Application for your UBI, taxes, trade names, and endorsements.
5. Add local permits, insurance, bookkeeping, and sales tax setup before launch.