Does a business with Seattle receipts owe both Washington B&O tax and Seattle's business license tax?

Two taxes on the same receipts, and no credit between them

The state tax is measured "by the application of rates against value of products, gross proceeds of sales, or gross income of the business, as the case may be" (RCW 82.04.220(1)). Gross income of the business is computed "without any deduction on account of the cost of tangible property sold, the cost of materials used, labor costs, interest, discount, delivery costs, taxes, or any other expense whatsoever" (RCW 82.04.080), so city tax paid does not reduce the state measure. The state tax is not a tax on customers; it is "part of the operating overhead" of the business (RCW 82.04.500).

The Department of Revenue states that a city B&O tax "is in addition to the B&O tax imposed by the state of Washington." Seattle's tax is a city business and occupation tax in the statutory sense: "a tax imposed on or measured by the value of products, the gross income of the business, or the gross proceeds of sales, as the case may be, and that is the legal liability of the business" (RCW 35.102.030(3)). The Legislature has not preempted city gross receipts taxes; it has standardized them. A city that imposes one must adopt the mandatory provisions of a model ordinance developed through the Association of Washington Cities, including a credit system, a small business threshold of at least $20,000, and definitions that use chapter 82.04 RCW "as the baseline" (RCW 35.102.040(2)). Beyond those, "a city may adopt its own provisions for tax exemptions, tax credits, and tax deductions" (RCW 35.102.040(3)).

The credit system does not reach the state tax. The statute frames its objective as eliminating "multiple taxation of the same income by two or more cities" (RCW 35.102.060(2)). Seattle's multiple activities tax credit (SMC 5.45.070) follows that design: the City states that the credit "applies to local B&O taxes only" and that "paying the Washington state B&O tax does not qualify" a business for it. The two taxes stack.

Rates are limited by statute and by vote. City taxes measured by gross receipts or gross income from sales "shall not exceed a rate of .0020," subject to a limited allowance for cities with higher rates in an ordinance adopted as of January 1, 1982 (RCW 35.21.710), and "The qualified voters of any city or town may by majority vote approve rates in excess of" that limit (RCW 35.21.711). Seattle's 2026 rates rest on that voter approval: Ordinance 127259 recites that RCW 35.21.711 "requires a majority vote of the people to raise business and occupation tax rates to the rates proposed in this ordinance," and King County Elections' certified results show Seattle Proposition No. 2 approved with 70.97 percent of the vote.

Who Seattle can reach: nexus, licensing and the common carrier safe harbor

Nexus is tested separately for each government. For the state, an out-of-state business has substantial nexus if in the current or immediately preceding calendar year it had "More than one hundred thousand dollars of cumulative gross receipts from this state" or a "physical presence in this state, which need only be demonstrably more than a slightest presence" (RCW 82.04.067(1)(c)). For a city, the statute sets only the constitutional floor: "A city may not impose a business and occupation tax on a person unless that person has nexus with the city," meaning activity sufficient to subject the person to the city's taxing jurisdiction under Commerce Clause standards (RCW 35.102.050).

Seattle states its standard in Director's Rule 5-043 (Engaging in Business, effective July 14, 2016). A person "has created nexus with Seattle if, whether itself or through others acting on its behalf, it" "is physically present in the City," "endeavors to maintain a share of the market within the City," or "avails itself of the economic benefits of the City." The rule lists activities that count, among them soliciting sales, meeting with customers, making repairs, installing property, delivering goods in vehicles the seller owns, rents or uses, and rendering professional services, and it states that a person "may be engaged in business activities in Seattle whether or not it has an office." Once nexus is established, the person "is presumed to continue in business in Seattle" while it keeps earning income from the activity that created it. The rule sets no receipts-based bright line comparable to the state's $100,000 test.

The safe harbors in SMC 5.30.030, as the rule describes them, cover de minimis activity such as advertising by mail, soliciting sales by telephone from outside the city, attending (but not participating in) a trade show, and meeting with suppliers as a customer. Director's Rule 5-002 adds the case that matters most to remote sellers: "a seller located outside the City merely delivering goods into the City by means of a common carrier" "is not required to register and obtain a business license tax certificate" "provided that it engages in no other business activities in the City."

That produces the clearest case in which Seattle receipts do not mean Seattle tax. An out-of-state manufacturer with no Washington employees or property ships $3 million of goods a year to Seattle buyers by common carrier. It has state nexus through its receipts and owes wholesaling B&O tax, at 0.484 percent until January 1, 2027 and 0.5 percent after (RCW 82.04.270, as amended by 2025 c 420), or retailing B&O at 0.471 percent, rising to 0.5 percent, on retail sales (RCW 82.04.250). Under that rule Seattle requires neither a license nor tax from it. If the same manufacturer sends a sales representative to call on Seattle customers, it is soliciting and meeting with customers in the city, and its sales delivered there become Seattle income under the delivery rule discussed below: $3,000,000 less the $2,000,000 standard deduction leaves $1,000,000, which at 0.342 percent produces $3,420 of Seattle tax for the year.

The license and the tax have different thresholds. From January 1, 2026, a person whose "annual value of products, gross proceeds of sales, or gross income of the business in the City" "is equal to or less than $4,000 and who does not maintain a place of business within the City is not required to obtain a business license tax certificate," measured before the standard deduction (Director's Rule 5-002). Above that, a Seattle business license tax certificate is required and renewed each year by December 31. Seattle's published 2026 fees run from $73 for taxable revenue under $20,000 to $3,210 for more than $5 million, based on "the taxable revenue reported in the most recent complete calendar year." Licensing is a city matter: the certificate is a City of Seattle license, applied for and renewed through FileLocal, the multi-city online portal, or by mail. Chapter 35.90 RCW lets a city that uses FileLocal decline to partner with the Department of Revenue's business licensing service (RCW 35.90.020(7)).

The 2026 threshold, standard deduction and rates

Through 2025, Seattle taxed a business whose annual taxable gross revenue in the city reached $100,000, on all of it. Ordinance 127259 changed three things from January 1, 2026.

The threshold rose. Amended SMC 5.55.040.D provides that "For calendar years starting in 2026, the business and occupation tax threshold amount is $2,000,000." Director's Rule 5-013 (Business License Tax Threshold and Standard Deduction, effective January 1, 2026) measures the threshold on taxable revenue, meaning gross income in the city less the general deductions in SMC 5.45.100, before the standard deduction. A business below it "owes no tax," but "is still required to file a business license tax return" and reports $0 due. The rule's examples test the threshold on combined revenue across classifications and, for a multistate service business, on Seattle-apportioned income rather than worldwide receipts.

A standard deduction was added. Taxpayers "may deduct $2 million from the measure of the tax" (SMC 5.45.100.W, as added by Ordinance 127259). Director's Rule 5-013 applies it first to the classification with the highest rate, allows a quarterly filer to use it beginning with the first quarter that has taxable revenue, bars any credit from it, and bars any carryforward of an unused balance. The threshold and the deduction operate together, so no tax cliff appears at $2 million: in the rule's own example, $2,100,000 of taxable freight revenue leaves $100,000 taxable, and $658 of tax.

Rates rose. Under SMC 5.45.050 as amended by Ordinance 127259 and corrected by Ordinance 127267, the rate for extracting, manufacturing, printing and publishing, wholesaling, and retail sales and retail services moved from .00222 to .00342 for 2026 through 2032, and the rate for service and other business activities and for transporting freight for hire moved from .00427 to .00658. Beginning January 1, 2033, the rates fall to .00273 and .00526.

The combined effect cuts in two directions. Ignoring the license fee, a business with $5 million of taxable Seattle service revenue paid $21,350 at the 2025 rate and pays $19,740 in 2026; one with $20 million paid $85,400 and pays $118,440. On these rates the two regimes cross at roughly $5.7 million of taxable Seattle revenue in either rate group.

How much of the income is Seattle's: allocation and the two-factor formula

For income other than services and royalties, the city rule allocates "to the location where the activity takes place," and "In the case of sales of tangible personal property, the activity takes place where delivery to the buyer occurs" (RCW 35.102.130(1)). Royalties go to the taxpayer's commercial domicile (RCW 35.102.130(2)). For a seller of goods, Seattle income is the goods delivered to buyers in the city.

Services diverge. The state apportions service income by a single receipts factor, attributing a receipt first to "Where the customer received the benefit of the taxpayer's service" (RCW 82.04.462(3)(b)(i)). Cities must use two factors: income is apportioned "by multiplying apportionable income by a fraction, the numerator of which is the payroll factor plus the service-income factor and the denominator of which is two" (RCW 35.102.130(3)). Compensation is in the city if the individual is primarily assigned there, or in the fallback cases the statute lists (RCW 35.102.130(3)(a)). "Service income is in the city if the customer location is in the city" (RCW 35.102.130(3)(b)), and for a business customer the customer location is where the services are ordered from, then the billing or mailing address, then the customer's commercial domicile (RCW 35.102.130(4)(f)(iii)). Seattle applies this method to service income from January 1, 2020 (Director's Rule 5-047), and the rule states that "Only if the first step is unknown may the taxpayer move to the next step."

The payroll factor gives a city half its weight from where the work is done, which the state formula ignores. A consulting firm headquartered in Seattle earns $10 million of service income. Sixty percent of its compensation is paid to people assigned to its Seattle office, and 20 percent of its service income comes from customers who order from Seattle. Its Seattle share is (0.60 + 0.20) divided by 2, or 40 percent: $4,000,000. After the $2,000,000 standard deduction, the 2026 Seattle tax is $2,000,000 times .00658, or $13,160. If 25 percent of the firm's receipts are attributable to Washington under the state cascade, its state measure is $2,500,000, and at the 1.75 percent tier that applies to service income of $1 million to under $5 million in the prior year (RCW 82.04.290(2)(a)), assuming the same income in the prior year and no affiliates, the state tax is $43,750. The firm's Seattle base is larger than its entire Washington base.

A throwout rule widens the gap. Income "must be excluded from the denominator of the service income factor if" "at least some of the activity is performed in the city" and the income is attributable to a city, an unincorporated area of a county, or a foreign country "in which the taxpayer is not taxable" (RCW 35.102.130(3)(c)). Director's Rule 5-047 applies that to cities and counties anywhere in the United States. A taxpayer counts as taxable wherever it would have nexus under RCW 35.102.050, even if no tax is imposed there, so the exclusion bites only on receipts from places where the taxpayer has no nexus at all. Either party may seek separate accounting, the exclusion or addition of a factor, or another equitable method where the formula does not fairly represent the activity in the city, and the party seeking the departure must prove it by a preponderance of the evidence (RCW 35.102.130(3)(d), (e)).

Classification and administration: where the two systems track and where they part

Classifications track the state's, with a lag, because the model ordinance must define retailing, wholesaling, manufacturing, services and the other classifications from the chapter 82.04 RCW baseline (RCW 35.102.040(2)(g), 35.102.120). When Laws of 2025, chapter 422 extended the definition of a sale at retail, effective October 1, 2025, to information technology services, custom website development, investigation and security services, temporary staffing, advertising services and live presentations (RCW 82.04.050(3)(g) to (l)), and to custom software and the customization of prewritten software (RCW 82.04.050(6)(a)), those receipts moved to the state retailing classification. Seattle followed with Ordinance 127353, effective January 1, 2026, reclassifying the same seven activities to retail for city purposes and allowing receipts under qualifying contracts entered into before October 1, 2025 to be reported as services until April 1, 2026. These providers pay .00342 rather than the .00658 service rate. Draft Director's Rules on the reclassification were set for public hearing on October 20, 2026, so the City's rules for these activities are not final.

Administration does not track. The Department of Revenue states that it "does not administer or collect local B&O taxes." Seattle returns go to the City, through FileLocal, on a frequency assigned on the license: annual returns for a calendar year are due April 30, and quarterly returns are due the last day of the month after the quarter. Interest, penalties, and assessment and refund periods follow chapter 82.32 RCW by statute (RCW 35.102.080 to 35.102.110), but an audit, assessment or refund claim under one tax does not resolve the other, and a Seattle apportionment position need not match the state's because the formulas differ.

Seattle's business license tax is also not its only tax on business. The payroll expense tax (SMC chapter 5.38) and the social housing tax (SMC chapter 5.37) are measured by compensation paid in Seattle, and the City states the payroll expense tax "is imposed in addition to any license fee or tax imposed by the City, State or other government agency."

Practice notes

The analysis runs in a fixed order: state nexus and classification under RCW 82.04.067 and chapter 82.04 RCW; Seattle nexus under Director's Rule 5-043, where the common carrier safe harbor keeps a remote seller of goods outside the city and a single sales visit or service call brings it in; then the Seattle measure, by delivery for goods and by the two-factor formula for services. The formula depends on payroll records by employee assignment and on customer records showing where services are ordered from, since the cascade moves to the next step only when the first is unknown. A Seattle-based service business with customers elsewhere can carry a larger Seattle base than its Washington base, which a state-only review does not show. Since 2026, many smaller businesses owe no Seattle tax yet still hold a license, pay the fee and file a return reporting $0 due, while larger ones pay more than before. Assessment and refund periods run separately for each government. G&G State Tax Group provides Washington state and city business and occupation tax analysis, including Seattle nexus, apportionment and classification reviews, alongside its state and local tax practice.