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Washington’s Digital Ad Tax Enacted: Is Litigation Now Inevitable?

On May 20, 2025, Washington Governor Bob Ferguson signed into law Senate Bill (SB) 5814, a sweeping tax bill that expands Washington’s retail sales and use tax to digital advertising services and a range of high-tech and IT services. The new law takes effect for sales occurring on and after October 1, 2025.

As we noted previously, this legislation marks a significant shift in Washington’s tax policy, extending sales tax to categories of traditionally exempt business-to-business services. With enactment, legal challenges – particularly under the federal Internet Tax Freedom Act (ITFA) – are ripe and appear inevitable.

WHAT THE LAW DOES

SB 5814 amends RCW 82.04.050 by redefining “sale at retail” to include “advertising services,” broadly covering both digital and nondigital forms of ad creation, planning, and execution. The law specifically includes:

  • Online referrals
  • Search engine marketing
  • Lead generation optimization
  • Web campaign planning
  • Digital ad placement
  • Website traffic analysis

However, the law expressly excludes services rendered in connection with:

  • Newspapers (RCW 82.04.214)
  • Printing or publishing (RCW 82.04.280)
  • Radio and television broadcasting
  • Out-of-home advertising (g., billboards, transit signage, event displays)

With these carve-outs, it is difficult to see how anything other than internet advertising remains subject to tax. The structure of the new tax facially discriminates against e-commerce and is barred by ITFA.

ITFA AND THE CERTAINTY OF A LEGAL CHALLENGE

ITFA prohibits states from imposing taxes that discriminate against digital services when comparable offline equivalents are exempt. While SB 5814 purports to cover both digital and nondigital advertising, the exclusions for nondigital forms of advertising cause it to target the digital side of the industry. For example, a digital banner ad will be taxed, whereas a banner towed by an airplane promoting the same product will not.

This distinction mirrors the structure of Maryland’s Digital Advertising Gross Revenues Tax, which has been tied up in litigation since its enactment in 2021. A Maryland trial court found that law facially violated ITFA and federal preemption principles. That litigation continues, and Washington now finds itself on a similar path.

HIGH-TECH AND IT SERVICES ARE NOW TAXABLE

In addition to digital advertising, SB 5814 extends the retail sales tax to high-tech services, including:

  • Custom website development
  • IT technical support and network operations
  • Data processing and data entry
  • In-person or live-virtual technical training

Like advertising, these intermediate services typically are purchased by businesses in support of operations rather than for end consumption. Taxing their sale introduces tax pyramiding and adds costs that will ultimately be passed on to consumers. For Washington’s tech-driven economy, this change will inflate prices and reduce competitiveness.

Local advertisers and businesses that rely on digital marketing and high-tech services will see these costs rise and lead to higher prices for consumers.

OUTLOOK

While SB 5814 is now law, its enforceability remains far from certain. Taxing digital advertising services while expressly excluding offline media places the new law on a collision course with ITFA. A legal challenge is all but guaranteed.

At the [...]

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Washington’s Digital Ad Tax: A Lawsuit Waiting To Happen?

On April 27, 2025, the Washington Legislature delivered to Governor Bob Ferguson’s desk Senate Bill (SB) 5814, a sweeping tax bill that, among other changes, would expand the state’s retail sales and use tax to sales of digital advertising services and a range of high-tech and IT services. The bill now awaits the governor’s signature, with a decision due by May 20, 2025.

If enacted, the changes would take effect October 1, 2025, marking a significant expansion of Washington’s tax base into areas that have long been exempt, particularly intermediate business services such as digital marketing, data processing, and custom software support.

WHAT THE BILL DOES

SB 5814 amends RCW 82.04.050 by redefining “sale at retail” to include a broad range of services previously excluded from the sales tax. Specifically, it adds “advertising services,” defined as:

All digital and nondigital services related to the creation, preparation, production, or dissemination of advertisements including, but not limited to: layout, art direction, graphic design, mechanical preparation, production supervision, placement, referrals, acquisition of advertising space, and rendering advice…

The definition also expressly includes:

  • Online referrals
  • Search engine marketing
  • Lead generation optimization
  • Web campaign planning
  • The acquisition of advertising space in the internet media
  • Website traffic analysis for determining the effectiveness of an advertising campaign.

However, the bill expressly excludes advertising services rendered in connection with newspapers (as defined in RCW 82.04.214); printing or publishing (RCW 82.04.280); radio and television broadcasting; and out-of-home advertising such as billboards, transit displays, and signage at events.

With that list of exclusions, it’s hard to imagine what advertising services other than internet advertising services are left to tax. This focus on internet advertising creates a prima facie discriminatory tax on electronic commerce barred by the federal Internet Tax Freedom Act (ITFA).

ITFA AND THE CERTAINTY OF A LEGAL CHALLENGE

ITFA prohibits states from imposing “discriminatory taxes on electronic commerce.” A tax is discriminatory if it applies to digital services but not similar offline equivalents.

While SB 5814 expressly includes both digital and non-digital advertising services, the carve-outs for traditional formats such as print, TV, and radio effectively leave out non-digital advertising. As the bill itself states, services connected to newspapers, publishing, and broadcast media are not taxable. This distinction creates a classic ITFA problem:

  • A digital banner ad campaign will be taxed.
  • A newspaper ad or radio spot promoting the same product will not.

This kind of structural bias has been challenged before. Maryland’s Digital Advertising Gross Revenues Tax (the first of its kind in the United States) was enacted in 2021 and quickly faced multiple lawsuits on ITFA and other grounds. In 2022, a Maryland trial court struck down the law as unconstitutional, citing ITFA violations and federal preemption (although the decision was later reversed on procedural grounds). That litigation continues while the stack of taxpayer refund claims on the Maryland Comptroller’s desk grows taller.

Washington faces a similar outcome. SB 5814’s facial discrimination against digital advertising is precisely the kind of unequal [...]

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