How to Start a Cleaning Business in Washington

Washington is a strong place to build a cleaning business — high household income across the Puget Sound corridor, a deep commercial market in Seattle and Bellevue, and no state income tax. It also asks more of operators than most states. Workers' comp lives at the Department of Labor and Industries, and there is no other option. The sales-tax rule has a routine-versus-specialized line that decides whether you charge tax at all. Minimum wage is the highest in the country. Paid Family & Medical Leave is mandatory. This guide walks through what Washington requires in 2026, in the order you'll encounter it.

1. Pick a business structure

For a one-to-three-person crew, the practical choice is between a Washington LLC and a sole proprietorship. The sole prop has no Secretary of State filing, but it leaves your personal assets exposed to claims arising on jobsites. Most operators with one employee or a recurring commercial account form an LLC.

To form one, file a Certificate of Formation with the Washington Secretary of State through the Corporations and Charities Filing System (CCFS). The fee is $200 online ($180 filing + $20 online processing) or $180 on paper, with $100 expedited service available. Either way, you also file a Business License Application with the DOR Business Licensing Service (see section 2) before you start working.

The LLC also carries a $70 annual report to the Secretary of State, due each year by the end of your formation anniversary month, with the first report due within 120 days of formation. If formation paperwork isn't where you want to spend your first afternoon, Northwest Registered Agent will file the Certificate of Formation and serve as your registered agent for a modest annual fee.

2. Register with the state

Run a name search in CCFS to confirm the name you want is distinguishable from existing Washington entities. The Certificate of Formation asks you to name your members or managers, your principal office, and a registered agent — either a commercial registered agent already on file with the SOS, or a non-commercial agent with a physical Washington street address. PO boxes and PMBs are prohibited, and the agent must give prior written consent before being designated. Your LLC cannot serve as its own registered agent.

Then — the Washington-specific step — every business in the state files a Business License Application with the DOR Business Licensing Service to receive a Unified Business Identifier (UBI). The base processing fee is $50 for a new business; renewals are $5/year. The same application registers you with DOR for B&O and excise tax accounts, ESD for unemployment, L&I for workers' comp (once you have employees), and any partner city you list. Most major Washington cities — Seattle, Tacoma, Bellevue, Spokane, Olympia, Vancouver — are BLS partner cities, so their endorsements ride on the same application. Non-partner cities require a separate filing.

3. Get your EIN and a business bank account

Apply for a free Employer Identification Number at irs.gov. It takes about ten minutes — skip any look-alike site that charges a fee. With your EIN letter, stamped Certificate of Formation, and UBI in hand, most Washington banks will open a business checking account the same day. Run every dollar of cleaning income and every supply purchase through that account, paired with QuickBooks — clean books make B&O filings, PFML reconciliation, and quarterly L&I premium reports dramatically easier.

4. Business licenses and permits

Washington has no statewide cleaning-business license and no separate state janitorial registration; the BLS Business License Application is the universal entry point. What varies is the city layer:

• Seattle and Tacoma — endorsements filed through BLS. Each also has its own city B&O tax on gross receipts above the small-business threshold, separate from state B&O.
• Bellevue, Spokane, Olympia, Vancouver — endorsements filed through BLS. Verify Kirkland and Redmond partnership status before assuming.
• Non-partner cities — file the city's business license directly with the city.

If you operate under a name other than your legal name or your LLC's exact registered name, file a trade name on the BLS application ($5 per trade name).

5. Sales tax on cleaning services

This is the section to read twice. Washington's rule lives in WAC 458-20-172 and the DOR's Janitorial Industry Guide, and the line that matters is not residential-versus-commercial — it's routine-versus-specialized.

• Routine janitorial is not subject to retail sales tax. That includes interior and exterior window cleaning, floor cleaning and waxing, interior walls and woodwork, in-place cleaning of rugs, drapes, and upholstery, dusting, and trash disposal — work "regularly and normally performed by a commercial janitorial business." This revenue is taxed only under your B&O Service and Other Activities classification. You do not charge the customer retail sales tax on a routine recurring house clean or office clean.
• Specialized or non-repetitive cleaning is subject to retail sales tax. Construction cleanup, water and flood damage restoration, fire and smoke remediation, and similar non-routine work are taxed as retailing — you collect retail sales tax from the customer and report under Retailing B&O.
• Supplies and equipment. Your cleaning business is the consumer of its own chemicals, vacuums, and equipment, so you pay sales (or use) tax when you buy them.

The B&O Service and Other Activities rate is tiered effective October 1, 2025: 1.5% on prior-year service-classified gross receipts under $1M, 1.75% on $1M–$4,999,999.99, and 2.1% at $5M and above. Most small operators are at 1.5%. When you do charge retail sales tax on specialized work, the state portion is 6.5% and local portions range from 0.5% to about 4%, for combined rates roughly 7% to 10.6%. Charge based on the service location, not your office. Verify edge cases like move-out and post-construction cleans against the DOR Janitorial Industry Guide before invoicing.

6. Insurance and bonding

Carry general liability before your first paying job. Washington doesn't require it, but commercial clients and property managers almost universally ask for $1M per occurrence / $2M aggregate on a Certificate of Insurance. Next Insurance is one of the easier paths to a fast online quote on a small janitorial GL policy; a broker is worth talking to once you sign multi-location commercial accounts.

Workers' compensation works differently in Washington than almost anywhere else. Washington is one of four monopolistic state fund states — employers must purchase workers' comp from the Washington State Department of Labor & Industries (L&I), or be certified as self-insured. Private workers' comp carriers cannot write coverage here. The trigger is one or more employees. Once you have one, you open an L&I account through your BLS filing, report hours quarterly by risk class (janitorial and building cleaning have their own), and pay premiums based on those hours. Sole owners and corporate officers have specific exemption rules — verify yours with L&I before assuming you're excluded.

Washington does not require a state cleaning bond. Janitorial dishonesty bonds in the $10,000–$25,000 range are a market expectation for higher-end residential and most commercial accounts, but they are a sales credential, not a state rule. The insurance services page covers limits; the tax services page covers reporting retail sales tax on specialized work.

7. Hiring and payroll

Washington's 2026 statewide minimum wage is $17.13/hour — the highest state minimum in the country. Local rates climb from there: Seattle $21.30 for all employers, Tukwila $21.65 for all employers, and SeaTac $20.74 — but only for hospitality and transportation employers, so a cleaning crew working in SeaTac generally falls under the state $17.13. The applicable rate follows the location of the work, not the employer's address.

Three statewide payroll programs apply to every cleaning employer:

• Paid sick leave. All Washington employers accrue one hour per 40 hours worked, regardless of size. Employees can use accrued time starting on day 90, and unused balances up to 40 hours carry over year to year.
• Paid Family & Medical Leave (PFML). The 2026 premium is 1.13% of wages, split 28.57% employer / 71.43% employee. Employers with fewer than 50 Washington employees are exempt from the employer share but must still withhold and remit the employee share. The 2026 maximum weekly benefit is $1,647.
• Local ordinances. Seattle's PSST accrues faster than state PSL for larger employers; Tukwila's "Fair Access to Additional Hours of Work" ordinance affects how additional hours are offered to part-timers.

For worker classification, L&I uses a strict "personal labor" plus six-part test under RCW 51.08.180 — the most demanding of the four overlapping tests Washington applies. Cleaners doing cleaning work for a cleaning business almost never survive an L&I reclassification audit as 1099 contractors. Treat your crew as W-2 employees from the start. Gusto handles state withholding, PFML remittance, PSL accrual, and Seattle PSST reporting; the hiring guide walks through when to bring on your first W-2 employee.

8. Get your first clients

Washington's cleaning market splits into three lanes. Seattle and Bellevue have a deep commercial market — tech offices, Eastside life-science and lab cleaning, property-manager-driven multi-tenant accounts — where direct outreach and LinkedIn matter more than reviews. Suburban Puget Sound (Sammamish, Issaquah, Mercer Island, Bothell, Redmond residential) is premium residential, where Nextdoor referrals and Google reviews drive most early bookings. Spokane, Tacoma, Olympia, and Vancouver sit in between, with a mix of state-government, university, and small-business commercial alongside a steady residential base.

In every lane, online reviews compound. Set up your Google Business Profile the week you incorporate, ask every happy customer for a review within 48 hours, and use a tool like Broadly to automate the ask once volume justifies it. The commercial cleaning and marketing playbooks fill in the longer-form approach.

9. Pick your software stack

For a Washington operator running formal payroll from day one — which is most Washington operators, given the $17.13 minimum wage, L&I as the only workers' comp option, and PFML — the cleaning-business-with-employees stack is the right reference point. The two tools that earn their keep first are a field-service platform like Jobber for scheduling, dispatch, quotes, and invoicing, and a payroll provider that handles PFML, PSL, multi-rate minimum wage, and L&I quarterly reporting without manual workarounds. Books, insurance, and review tooling fill in around those two.

A note on accuracy

Every fee, threshold, and rule above is current for Washington as of May 2026. SOS filing fees, the BLS processing fee, L&I risk-class rates, the B&O tiers, the PFML premium and benefit cap, and the minimum wage in any given city all change — verify with the Washington Secretary of State, Department of Revenue, Department of Labor & Industries, and Employment Security Department before relying on a specific number for a filing or a tax decision. This guide is editorial, not legal or tax advice.