How to Start a Cleaning Business in Washington State (2026)

Last updated: September 13, 2026

Starting a Washington cleaning business requires attention to both business licensing and the type of cleaning you sell. Routine janitorial services are treated differently from construction cleanup and other specialized cleaning for state taxes. If you hire cleaners, plan for Washington wages, leave and workers’ compensation before accepting a staffed contract.

1. Register the business and its operating locations

Choose a sole proprietorship or an entity such as an LLC. An LLC is optional and is not a cleaning license. Use the Secretary of State’s LLC resource page if you choose that structure. Formation, the initial report and annual reports are separate filing obligations; check the current fee and whether the initial report is included in your submission.

Complete the Department of Revenue business-licensing process when required. The first-location Business License Application processing fee is generally $50, with trade-name and applicable endorsement fees additional. Registering an LLC alone does not complete the tax, employer or local licensing steps.

Check each city where you will work. Some city endorsements are handled through the state licensing service; Seattle uses its own process through FileLocal. Its 2026 business-license guidance limits the $4,000 exemption to businesses at or below that level of Seattle income that do not maintain a place of business in the city. Do not confuse a license exemption with a B&O tax threshold.

2. Classify each cleaning service for state tax

The DOR cleaning-services guide puts ordinary janitorial work under Service and Other Activities B&O tax without retail sales tax. Examples include dusting, floor cleaning and waxing, window cleaning, and cleaning rugs, drapes and upholstery in place.

Specialized cleaning, such as construction cleanup, mold abatement, duct cleaning and fire-damage restoration, generally falls under Retailing B&O and retail sales tax. Exceptions can apply to qualifying resale or government-contracting situations. Classify the actual job; calling it a “deep clean” or selling it only once does not provide a reliable tax decision by itself.

Pay sales or use tax on products and equipment consumed in providing services. Products actually resold to customers need separate records. Keep your estimates and invoices specific enough to explain which activities you performed, particularly when ordinary cleaning and specialized work are sold together.

3. Use the correct B&O rate and filing calendar

Since October 1, 2025, the Service and Other Activities rate schedule has three tiers based on taxable income in that classification during the prior calendar year, including relevant affiliated-group income: 1.5% below $1 million, 1.75% from $1 million to less than $5 million, and 2.1% at $5 million or more. This is a gross-receipts tax, not a tax on profit. Credits or other provisions may affect what a small business owes.

State and city B&O obligations are separate. Seattle increased its city B&O tax threshold to $2 million starting January 1, 2026; see the city’s current tax guidance. A business below the tax threshold may still need its city license and required filings.

Calendar assigned state returns, local returns and entity renewals. Also check business personal-property reporting with the county assessor rather than assuming small tools and equipment create no reporting duties.

4. Arrange workers’ compensation and other insurance

Washington generally requires coverage for workers unless a specific exemption applies. A cleaner paid on a 1099 can still be a covered worker. Use L&I’s independent-contractor tests; business registration or an invoice alone does not establish an exemption.

Ordinary employers obtain Washington workers’ compensation through L&I; approved self-insurance is a separate arrangement. Do not buy a private policy assuming it replaces Washington coverage. Ask L&I to classify the actual cleaning operations, including work beyond ordinary janitorial service. Washington uses its own risk classifications, so generic NCCI janitorial codes are not a Washington rate quote. Check whether you need an account.

Separately review general liability, customer property in your care, tools, business driving and employee dishonesty. A bond and a liability policy cover different risks. Ask clients for their insurance requirements and have the agent explain any additional-insured endorsement. A certificate alone does not create coverage.

5. Pay the wage applicable to each job

Washington’s 2026 minimum wage is $17.13 per hour for covered adult workers; some cities require more. L&I’s wage guidance explains the state rules. Seattle’s 2026 minimum is $21.30. Check the local rate where the employee performs the work, rather than using the address of your office.

Track travel between jobs, required preparation and other working time. Build meal/rest-break coverage and overtime into scheduling. A wage rate alone is not the total labor cost: payroll taxes, insurance, paid leave, training and supervision also affect a cleaning bid.

6. Set up sick leave and payroll programs

Covered Washington employees accrue at least one hour of paid sick leave per 40 hours worked, with required carryover of unused balances of 40 hours or less. Review L&I’s minimum requirements for accrual, use, notices and records.

Seattle has separate Paid Sick and Safe Time rules. Its one-hour-per-30-hours accrual applies to the largest employer tier, not every cleaning company. Smaller tiers generally accrue at one per 40, with different carryover requirements. Apply all relevant state and city protections.

The 2026 Paid Family and Medical Leave premium is 1.13% of covered wages up to the applicable Social Security cap. Employees pay 71.43% of the total premium and the employer share is 28.57%; employers with fewer than 50 employees generally do not owe that employer share but still have reporting and collection duties. Check the program’s current employer updates and job-protection rules.

Set up unemployment reporting using your assigned rate. ESD confirms the 2026 unemployment taxable wage base is $78,200. WA Cares has separate premium and exemption rules; use the current payroll instructions rather than treating every state deduction as unemployment tax.

7. Distinguish current law from the 2027 domestic-worker changes

Washington enacted a Domestic Workers Bill of Rights in 2026, but Chapter 49.96 RCW takes effect July 1, 2027. It covers qualifying paid domestic work, including specified cleaners and independent contractors, with definitions and exclusions. Prepare for its requirements without describing them as already effective in September 2026.

Existing wage, safety, leave and coverage rules still apply where relevant. Seattle also has its own domestic-worker ordinance. Do not assume the future state act either replaces those current protections or automatically resolves every household-worker insurance exemption.

8. Build a safe, workable cleaning route

Use written service scopes, access instructions, payment terms and damage-reporting procedures. Train staff on chemical labels, safety data sheets, protective equipment, lifting and ladders under Washington workplace-safety requirements. Hazardous-material removal should be a separately qualified and insured service.

Test a compact residential or small-office route with actual customer inquiries. Obtain equipment and insurance quotes, then price labor including travel and nonbillable time. Keep startup purchases separate from recurring payroll, vehicle, supply and tax costs. No statewide revenue or profit range can establish what your own route will earn.

Frequently asked questions

Do Washington cleaners always collect sales tax?

No. Ordinary janitorial services generally do not, while specialized cleaning often does. Classify the work using DOR’s guidance.

Is the new statewide domestic-worker law effective now?

As of September 13, 2026, no. Chapter 49.96 RCW takes effect July 1, 2027. Existing applicable protections still matter.

Does a state business license cover Seattle automatically?

No. Seattle has its own business-license process through FileLocal and separate city tax rules.

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Requirements reviewed September 13, 2026. Official sources are linked beside the requirements discussed.