Seattle is one of the Pacific Northwest’s premier business cities and a global hub for technology, aerospace, retail, and professional services. Washington State has no income tax, but the state’s Business and Occupation (B&O) tax creates a unique compliance landscape for Seattle businesses. These are the top tax and CPA firms serving Seattle small businesses.
★ HL Recommended
Huddleston Tax CPAs
Seattle CPA firm specializing in small business tax planning, accounting, and tax strategy for entrepreneurs and growing businesses, with deep expertise in Washington’s B&O tax.
Great for: Seattle small businesses needing B&O tax expertise and proactive tax planning
Raymond Lyle CPA PLLC
Seattle tax professional offering business tax preparation, IRS representation, and year-round advisory services for Seattle entrepreneurs and SMEs.
Great for: Entrepreneurs needing responsive year-round tax support and IRS assistance
Pitch CPA LLC
Seattle CPA firm providing small business accounting, tax compliance, and financial reporting for local business owners seeking reliable and accessible tax support.
Great for: Small businesses needing reliable compliance and financial reporting
Washington State has no personal income tax, which benefits business owners significantly at the personal level. However, Washington imposes a Business and Occupation (B&O) tax on gross receipts of businesses operating in the state. The B&O tax rate varies by business classification: retailing (0.471%), services (1.5%), and other categories have different rates. Seattle also has a local B&O tax that stacks on top of the state obligation. The combined Seattle-King County sales tax rate is 10.25%, one of the highest combined rates in the country. Seattle also imposes a payroll expense tax on larger employers.
Washington’s B&O tax is a gross receipts tax, meaning it applies to all revenue regardless of whether the business is profitable. This is a significant difference from income-based taxes and catches many new Seattle business owners off guard when they realize they owe B&O tax even in a loss year. Service businesses are taxed at 1.5% under the services classification, which is the highest general B&O rate. Seattle’s payroll expense tax (formerly the JumpStart Seattle tax) applies to larger businesses with significant Seattle payroll. The technology sector, which dominates Seattle’s economy, also creates specific nexus and sourcing questions for software-as-a-service and technology businesses.
TurboTax Business handles federal returns well for Seattle businesses. Since Washington has no income tax, state personal returns are not required. However, Washington B&O tax filings and Seattle city tax obligations are typically not handled by consumer tax software.
Many Seattle business owners manage their federal returns with TurboTax Business but find that Washington B&O tax and Seattle city tax filings require a local CPA who understands the state’s unique gross receipts-based system.
Seattle CPAs serve businesses across King County, Pierce County, Snohomish County, and the broader Puget Sound region.
For help finding the right tax professional in Seattle, Hustler’s Library is here to point you in the right direction.
Washington’s Business and Occupation (B&O) tax is a gross receipts tax applied to the total revenue of businesses operating in the state. Unlike income taxes, the B&O tax applies to all revenue before deducting expenses, costs, or losses. Different business activities are taxed at different rates: services at 1.5%, retailing at 0.471%, wholesaling at 0.484%, and manufacturing at 0.484%. Seattle also has its own local B&O tax. Businesses must register with the Washington Department of Revenue and file B&O returns monthly, quarterly, or annually depending on their tax liability.
Yes. In addition to state B&O tax, Seattle imposes a local B&O tax at rates that vary by business type. Seattle also has the JumpStart Seattle payroll expense tax, which applies to businesses with at least $8.5 million in annual payroll that pay any Seattle employee at least $182,500 annually. The tax rate varies by tier. Seattle’s combined sales tax rate of 10.25% applies to retail sales made within city limits. Businesses operating in Seattle should verify all applicable local tax obligations with a local CPA or the Seattle Office of Finance and Administrative Services.
Seattle business owners pay federal quarterly estimated taxes on the standard schedule. Since Washington has no personal income tax, there are no state quarterly personal income tax payments. However, B&O tax payments may be required monthly or quarterly depending on your liability level. A local CPA can set up a comprehensive payment schedule covering all federal, state, and city obligations to ensure you are not missing any deadlines or accruing penalties.
Washington State taxes B&O on gross receipts rather than income, so the entity structure choice does not change your B&O obligation. However, for federal tax purposes, S corporation structuring can still save on self-employment taxes by splitting income between salary and distributions. Since Washington has no income tax, the state-level comparison is simpler. A Seattle CPA can model the federal tax savings from S corporation election alongside the additional administrative costs to determine if it makes sense for your business.
Seattle business owners can take all standard federal deductions including Section 179, home office, vehicle mileage, and ordinary business expenses. Washington B&O tax has limited deductions but allows certain exemptions including a small business B&O tax credit for businesses with annual gross receipts under a specified threshold. Seattle’s high cost of living also creates meaningful home office and commuting cost considerations. A Seattle CPA can ensure you are capturing all available federal deductions and properly applying any applicable B&O exemptions.
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