If you are wondering about the Washington corporate tax rate, the short answer is that there is none. Washington does not impose a corporate income tax, a personal income tax, or a franchise tax. Instead, the state raises revenue through a business and occupation (B&O) tax on gross receipts, a sales and use tax, and various industry-specific taxes administered by the Washington Department of Revenue.
That structure makes Washington attractive to many founders, but the B&O tax and an expanding sales tax on services mean “no income tax” does not mean “no tax.” This guide walks through what a growing or foreign-owned business actually owes in Washington for 2026.
Key Takeaways
- Washington has no corporate income tax, personal income tax, or franchise tax. Its primary business tax is the B&O tax, which is levied on gross receipts rather than net income, so it can apply even in a year with no profit.
- The state sales tax rate is 6.5%, and local add-ons bring the average combined rate to roughly 9.5%. Washington already taxes SaaS and many digital products. Effective October 1, 2025, the taxable base expanded to include custom software, certain IT services, website development, advertising, and other specified services.
- Out-of-state and foreign-owned businesses can trigger Washington tax and registration obligations by crossing the $100,000 economic nexus threshold or by establishing a physical presence, even when no income tax is owed.
Why Washington Is Considered a Business-Friendly State
Washington is widely regarded as business-friendly because it has no corporate or personal income tax. The state is also home to a deep technology and aerospace base, with major employers such as Microsoft, Amazon, Boeing, and Starbucks headquartered there.
Beyond the tax profile, founders tend to point to a few consistent advantages:
- No state income tax. Neither individuals nor corporations pay a state income tax, which simplifies planning for owners and employees alike.
- A diverse, resilient economy. Technology, aerospace, agriculture, and trade all have a strong presence, which reduces reliance on any single sector.
- A skilled talent pool. The state draws highly educated workers, particularly in engineering and software.
- Access to capital. Washington has a notable concentration of venture capital firms and angel investors.
- Infrastructure and quality of life. Well-developed transportation networks and ports support trade, and the state’s outdoor and cultural amenities help with recruiting.
Keep in mind the trade-off: because the B&O tax is assessed on gross receipts, it can weigh more heavily on early-stage and low-margin companies than a net-income tax would, since it applies whether or not the business is profitable.
How to Start a Business in Washington
Setting up in Washington means registering with the Secretary of State and the Department of Revenue, obtaining a UBI number, and securing the right licenses for your activity and location. The steps below apply to LLCs and corporations alike, though foreign owners should plan ahead for an EIN and a registered agent with a physical Washington street address.
Step-by-Step Registration Process
The core steps to form a business in Washington are:
- Choose a business structure (LLC, C Corp, S Corp, partnership, or sole proprietorship).
- Choose a name that includes the required identifier for your entity type, such as “Corporation,” “Incorporated,” “Limited,” or “Company” for corporations, or “LLC” for limited liability companies.
- Confirm the name is available using the Washington Secretary of State business search, and check the U.S. Patent and Trademark Office database to make sure it is not already trademarked.
- File your formation documents with the Washington Secretary of State: Articles of Incorporation for corporations, or a Certificate of Formation for LLCs.
- Obtain your UBI number. Several state agencies use the Unified Business Identifier (UBI) to identify your company. Online filings are typically confirmed within a few business days, while mailed filings can take up to three weeks.
- Apply for your business license through the Business Licensing Service, and request any city or specialty licenses your activity requires.
- File your initial report. Corporations and LLCs must file an initial report within 120 days of formation.
- Get an EIN. If you will hire employees or owe federal taxes, you need a federal Employer Identification Number. See our EIN guide for how to apply, including as a foreign owner without an SSN.
- Register with the Department of Revenue to report and pay B&O and sales tax (covered below).
- Check your BOI obligation. Entities formed in the United States are currently exempt from FinCEN’s Beneficial Ownership Information (BOI) reporting. A company formed under the law of a foreign country that registers to do business in a U.S. state may still need to file. See our [FinCEN BOI guide][BOI-URL] for current requirements before you rely on this.
- Stay compliant. File an annual report by the last day of your formation (anniversary) month each year. The Secretary of State sends a renewal notice to your registered agent ahead of the due date.
Required Business Licenses and Permits
Most Washington cities require a license to operate within their limits, and many activities require a specialty or professional license in addition to the general business license.
When you complete the Business License Application, each item you check notifies the relevant agencies of the fees and filings you owe, so fill it out carefully. Depending on your city and industry, you may also need local permits.
Registering with the Washington Department of Revenue
After registering the entity with the Secretary of State, businesses that meet Washington’s registration requirements should complete the appropriate Business License Application and Department of Revenue registration to establish the necessary tax accounts. Once registered, you report and pay B&O tax and, if applicable, collect and remit sales tax through the Department’s My DOR portal.
Out-of-state and foreign-owned businesses that cross the economic nexus threshold (discussed below) must register even if they have no physical location in the state.
Washington Corporate Income Tax and the B&O Tax
Washington’s approach to business taxation is unusual, because rather than taxing profit, it taxes activity. Understanding the difference between the corporate income tax the state does not have and the B&O tax it does levy is the key to estimating what your business will actually owe.
Washington’s Lack of a Corporate Income Tax
Washington does not tax corporate net income or personal income. It also has no franchise tax; the B&O tax is the primary business tax. Instead of taxing profit, Washington taxes business activity through the B&O tax, which is based on your gross receipts.
The Business and Occupation (B&O) Tax Explained
The B&O tax is a gross receipts tax. It applies to your gross income, gross sales proceeds, or the value of products you produce, with no deductions for labor, rent, materials, or other costs. Because you can’t deduct costs, a business can owe B&O tax even in a year when it loses money.
The rate depends on your business classification, and you can find the rate for your activity on the Department of Revenue’s Tax Classification for Common Business Activities page. Two points are worth knowing for 2026:
- Service and Other Activities are no longer taxed at a flat rate. Since October 1, 2025, the rate is tiered based on the business’s (and its affiliated group’s) taxable income subject to the Service and Other Activities classification in the prior calendar year: 1.5% under $1 million, 1.75% from $1 million to $5 million, and 2.1% at $5 million and above.
- Retailing, wholesaling, manufacturing, and extracting are currently taxed at roughly 0.471% to 0.484%, with these standard classifications scheduled to move to 0.5% effective January 1, 2027.
Washington also offers a small-business B&O tax credit that can reduce or eliminate the tax for very low-revenue businesses, and many cities (including Seattle, Tacoma, and Bellevue) impose their own separate city-level B&O tax that you file in addition to the state tax. Foreign-owned LLCs and corporations should review how apportionment and sourcing apply to their receipts; our LLC taxes guide is a useful starting point.
Nexus Triggers: Mailing Address and Employee Presence
Nexus is the connection that gives Washington the authority to tax your business. Two questions come up often:
Does a mailing address create nexus?
A mailing address alone does not create a B&O obligation. Note, though, that a registered agent must have a physical street address in Washington; a PO box or private mailbox can serve only as a backup mailing address, not as the required principal office or registered agent address.
Does an employee create nexus?
Physical presence, including an employee, office, inventory, or traveling staff, generally creates nexus regardless of revenue. An employee can also trigger separate obligations such as payroll tax withholding and sales tax collection.
Even without any physical presence, an out-of-state or foreign-owned business establishes economic nexus once it has more than $100,000 in combined gross receipts sourced or attributed to Washington in the current or prior calendar year.
Crossing that threshold means you must register with the Department of Revenue and file, even if you owe zero tax. Once nexus is established, it generally continues through the rest of that year and the following year (trailing nexus), even if activity in the state stops.
Director Nexus and B&O Tax Obligations
Employee compensation is exempt from the B&O tax, so most employee directors, typically paid as employees rather than independent contractors, will not owe B&O tax on their director service. Compensation reported on a Form W-2 is treated as employee pay, not as independent-contractor income for serving as a corporate director.
Nonresident directors are a different case. A director outside Washington may still owe B&O tax if they are a Washington resident or meet the state’s property, payroll, or economic nexus thresholds. The specific dollar figures are set by statute (RCW 82.04.067) and adjusted periodically, so confirm the current thresholds before applying them to a real situation.
Sales Tax in Washington
Sales tax is where Washington’s “no income tax” reputation gets more complicated, since the state has been steadily expanding what counts as a taxable sale. Whether you sell physical goods, software, or services, confirm how each revenue stream is treated before you set prices or file.
State and Local Sales Tax Rates
Washington does collect sales tax on most tangible goods and a growing list of services. The state rate is 6.5%, and local jurisdictions (cities, counties, and special districts) add their own rates on top. The average combined state and local rate is approximately 9.5%, and in some urban areas the combined rate exceeds 10%. Washington is a destination-based state, so you generally calculate the rate based on where the customer receives the goods or service, not where your business is located.
SaaS, Digital Products, and Remote Software Sales Tax
Washington taxes a wide range of digital products, and it was an early state to tax software-as-a-service (SaaS) and to specifically call out NFTs as a taxable digital product. Remote access software (RAS) is also subject to sales and use tax, whether the buyer receives a perpetual or a non-permanent right of use.
The taxable base expanded further on October 1, 2025, under ESSB 5814, which pulled several services into the retail sales tax, including custom software and the customization of prewritten software, information technology services, custom website development, temporary staffing, security services, and advertising.
A follow-up law (ESSB 6346) is scheduled to repeal most of this expansion effective January 1, 2029, with advertising specifically carved out and left taxable. That repeal is contingent and could be voided depending on litigation over the state’s tax changes, so through the end of 2028 these services remain taxable and should be treated accordingly.
Marketplace Facilitator Rules
If you sell through a marketplace facilitator that collects and remits Washington retail sales tax on your behalf, you may not owe sales tax on those transactions directly. You can still have your own registration, filing, and B&O obligations once you cross the economic nexus threshold, so marketplace collection does not automatically remove all of your responsibilities.
Sales Tax Filing Deadlines and Late Filing Penalties
The Department of Revenue assigns your filing frequency, which may be monthly, quarterly, or annual, based on how much tax you collect. Due dates depend on that frequency; for example, monthly returns are due on the 25th of the following month, and quarterly returns are due at the end of the month following each quarter.
If you cannot file on time, the Department may grant an extension if you request it before the deadline, and it may waive late penalties in certain circumstances. An account becomes delinquent once a payment deadline passes with an amount still owed, and interest on excise tax assessments is adjusted annually. If you believe you qualify for a penalty waiver, you can request one from the Department.
How to Close a Business in Washington
Closing a business cleanly protects you from lingering tax and compliance liabilities. The main steps are:
- Adopt a corporate resolution to dissolve, and file the dissolution documents with the Washington Secretary of State. File IRS Form 966 within 30 days of the resolution.
- Account for all business assets, including outstanding accounts receivable.
- Pay all outstanding wages and compensation due to employees and contractors.
- Follow the IRS Closing a Business checklist, file all income tax returns, and settle outstanding liabilities.
- Pay off loans, particularly those with personal guarantees, and settle with remaining creditors.
- Distribute any remaining assets to the owners in accordance with your governing documents.
- Obtain a certificate of dissolution and file the final return with the IRS by the 15th day of the fourth month after dissolving.
For a fuller walkthrough, see our guide on how to dissolve your corporation.
How Cleer Tax Can Help with Washington Business Taxes
Cleer Tax provides corporate income tax packages covering federal and state filings, so you can stay compliant without piecing it together yourself. We also offer monthly bookkeeping, including monthly statements and a bookkeeping catch-up package if you have fallen behind on your books.
If you want help reducing your tax liability or sorting out your Washington obligations, contact us.
Frequently Asked Questions (FAQ)
Does Washington have a corporate income tax?
No. Washington has no corporate income tax, personal income tax, or franchise tax. Its main business tax is the B&O tax, a gross receipts tax that applies to your revenue regardless of profit.
Is Washington a business-friendly state?
Generally, yes. The lack of a corporate and personal income tax, a strong tech and aerospace economy, deep talent, and good access to capital are the main draws. The B&O tax on gross receipts is the trade-off to weigh.
Does having a mailing address in Washington create tax nexus?
No, a mailing address alone does not create a B&O tax obligation. Physical presence or crossing the $100,000 economic nexus threshold is what triggers registration and filing duties.
Does having an employee in Washington create tax nexus?
Yes. An employee is a physical presence that generally creates nexus regardless of revenue, and can also trigger payroll withholding and sales tax collection obligations.
Can Cleer Tax help me file taxes in Washington?
Yes. Cleer Tax offers corporate tax packages covering federal and state filings, plus monthly bookkeeping and catch-up bookkeeping.
Disclaimer:
This article is for general informational purposes and isn’t tax, legal, or accounting advice. Tax rules change often, and your situation may differ. Talk to a Cleer Tax advisor before making decisions based on this content.
