Candice Horbacz
In a highly anticipated decision with national implications, the Maryland Tax Court has invalidated the state’s controversial digital advertising tax, ordering the immediate repayment of five and a half years’ worth of collections to affected taxpayers. This landmark ruling marks a significant victory for the petitioners—a coalition of advertising and business groups—who have long argued the tax was unconstitutional and discriminatory. While appeals are certain to follow, likely staying the refunds in the interim, the court’s comprehensive decision is widely seen as a potent harbinger for similar legislative efforts across the United States.
Background of the Landmark Ruling
The Maryland Tax Court delivered a robust and unequivocal judgment, concluding that the digital advertising tax violated three distinct legal principles, any one of which would have been sufficient to strike down the statute: the federal Internet Tax Freedom Act (ITFA), the U.S. Constitution’s Commerce Clause, and the U.S. Constitution’s Due Process Clause. This trifecta of legal infirmities underscores the profound challenges states face in attempting to unilaterally tax the digital economy. The decision is poised to reverberate through statehouses nationwide, particularly in Illinois and Utah, which have recently enacted their own versions of digital advertising taxes, and in other states currently contemplating similar revenue-generating measures.
A Contentious Legislative Journey
Maryland’s journey to implement the digital advertising tax was fraught with controversy from its inception. The tax, formally known as the Digital Advertising Gross Revenue Tax, was enacted in February 2021, becoming the first of its kind in the nation. It emerged from a legislative push to identify new revenue streams, particularly from large technology companies, to fund education initiatives under the "Blueprint for Maryland’s Future" program.
The legislative process saw significant debate and opposition from various business and advertising industry groups, who warned of its constitutional vulnerabilities and potential negative economic impacts. Despite these concerns, the Maryland General Assembly ultimately overrode Governor Larry Hogan’s veto to pass Senate Bill 787, establishing a graduated tax on gross revenues derived from digital advertising services in Maryland. The rates ranged from 2.5% for companies with global annual gross revenues of $100 million to $1 billion, up to 10% for companies with global revenues exceeding $15 billion. Proponents argued it was a necessary step to ensure that profitable tech giants contributed their "fair share" to state services, while opponents decried it as an ill-conceived, unconstitutional, and economically damaging experiment.
The tax officially went into effect on January 1, 2022, immediately drawing legal challenges. Verizon and various advertising trade associations, including the U.S. Chamber of Commerce and the Internet Association, filed lawsuits challenging the tax’s legality. These cases were consolidated and ultimately led to the Maryland Tax Court’s pivotal ruling on August 14, 2026, as referenced in the court’s official documentation.
The Internet Tax Freedom Act: A Cornerstone of the Digital Economy
A primary pillar of the Tax Court’s decision rested on the Internet Tax Freedom Act (ITFA), a federal law designed to prevent discriminatory taxation of electronic commerce. Enacted in 1998 and made permanent in 2016, ITFA generally prohibits states and localities from imposing taxes that single out the internet or internet access, particularly if those taxes are not applied to "similar property, goods, services, or information" offline.
Opponents of Maryland’s digital ad tax consistently argued that by exclusively targeting digital advertising, while exempting traditional forms of advertising such as billboards, print newspaper ads, radio spots, and television commercials, the state was in clear violation of ITFA’s non-discrimination provisions.
Maryland’s legal team presented several counterarguments to this assertion, all of which were systematically dismantled by the Tax Court. First, the state contended that digital advertising was fundamentally dissimilar to traditional advertising, thereby falling outside ITFA’s purview. The court, however, rejected this distinction, emphasizing that the core function and purpose of advertising—to promote goods, services, or ideas—remains consistent across platforms, regardless of the mode of delivery. The similarities, the court found, far outweighed any superficial dissimilarities.
Second, the state argued that ITFA does not provide a private right of action, meaning only the federal government, not private entities, could seek to enforce it. The court conceded this point might be technically true but deemed it irrelevant to the petitioners’ case. The petitioners were not directly seeking to enforce ITFA; rather, they were seeking refunds of taxes paid, with ITFA serving as a valid legal justification for their refund claim. Their standing derived from their status as taxpayers, not as enforcers of federal law.
Finally, Maryland challenged ITFA’s constitutionality, invoking anti-commandeering doctrines based on a Supreme Court ruling that struck down a federal ban on gambling on college sports. The Tax Court swiftly dismissed this argument, noting a crucial distinction: while Congress lacks plenary authority over intercollegiate gaming, it possesses explicit and broad constitutional power to regulate interstate commerce. ITFA, by regulating state taxation of interstate e-commerce, falls squarely within this constitutional authority.
This comprehensive rejection of Maryland’s arguments regarding ITFA sends a powerful message to other states. Any digital advertising tax, regardless of its specific design nuances, is highly susceptible to legal challenge under ITFA if it disproportionately or exclusively targets digital advertising while neglecting comparable offline advertising mediums.
Interstate Commerce Under Scrutiny: The Commerce Clause Violation
Beyond ITFA, the Maryland Tax Court found the digital advertising tax to be in violation of the U.S. Constitution’s Commerce Clause. This clause, interpreted by the Supreme Court in cases like Complete Auto Transit, Inc. v. Brady (1977), imposes limits on states’ abilities to tax interstate commerce to prevent undue burdens and discrimination. The Complete Auto test requires state taxes on interstate commerce to satisfy four conditions: (1) apply to an activity with a substantial nexus to the taxing state, (2) be fairly apportioned, (3) not discriminate against interstate commerce, and (4) be fairly related to services provided by the state.
Maryland’s tax stumbled on multiple prongs of this test. A critical flaw identified by the court was the tax’s graduated-rate structure, which was not based solely on revenue generated within Maryland but on an advertising platform’s worldwide gross revenue. This design meant that the amount of tax owed in Maryland was directly influenced by economic activity entirely outside the state’s borders. The court ruled that this structure violated the "fairly apportioned" requirement, as it lacked external consistency—taxing activity that bore no direct relation to Maryland.
Furthermore, the court found that the tax was designed to disproportionately, if not exclusively, target large, out-of-state companies engaged in interstate commerce. The thresholds for the graduated rates were set at levels that effectively captured only globally robust enterprises, inherently discriminating against interstate commerce.
The Tax Court also concluded that the tax failed the "fairly related to services received" prong of the Complete Auto test. As the court articulated, "The economic reality is that the Tax in its everyday operation discriminates against more globally robust companies in interstate commerce to the advantage of the Maryland tax coffers. Global revenues have no relationship to in-state services under the Tax to those payors." In essence, the tax levied an increasingly heavy burden on companies based on their global success, not on the extent or value of the services they received from the state of Maryland. This meant the tax violated at least three of the four Complete Auto requirements.
While some aspects of this Commerce Clause violation are specific to Maryland’s unique tax design—particularly the reliance on global revenue for rate graduation—the fundamental principle of non-discrimination and fair apportionment applies to any state contemplating a similar tax. Any state tax that disproportionately impacts out-of-state entities or bases tax liability on extraterritorial factors is likely to face similar constitutional scrutiny.
Ensuring Fairness: The Due Process Clause
Finally, the Maryland Tax Court determined that the digital advertising tax also violated the Due Process Clause of the Fourteenth Amendment. This clause requires that state taxes on interstate commerce meet two fundamental criteria: (1) a minimal connection (nexus) between the interstate activities and the taxing state, and (2) a rational relationship between the income attributed to the state and the interstate values of the enterprise.
The court found that the tax failed the second requirement, primarily for the same reasons it failed the fair apportionment test under the Commerce Clause. The discriminatory nature of the tax, particularly its reliance on global revenue to determine Maryland liability, meant there was no rational relationship between the tax burden imposed and the actual value or activity attributable to the state. The tax was deemed arbitrary and lacked the requisite fairness mandated by due process, effectively penalizing businesses for their overall success rather than their specific engagement with Maryland’s economy.
Immediate Financial Fallout and Budgetary Implications for Maryland
The Tax Court’s order for refunds to taxpayers for five and a half years of collections represents a significant financial blow to Maryland’s budget. While exact figures are not publicly available, initial projections for the tax estimated annual revenues in the tens, if not hundreds, of millions of dollars. For instance, the Department of Legislative Services projected the tax could generate $250 million in fiscal year 2022, growing to $300 million by fiscal year 2026. Cumulatively, this could amount to well over a billion dollars in potential refunds, creating a substantial fiscal challenge for the state.
These funds, originally earmarked for the "Blueprint for Maryland’s Future" education reform plan, will now need to be accounted for, potentially requiring the state to identify alternative revenue sources or adjust spending priorities. The uncertainty surrounding the refund process, particularly if appeals drag on, will further complicate long-term budgetary planning.
Reactions from Stakeholders
The ruling immediately elicited strong reactions from various parties.
From the State of Maryland: While official statements are pending the full review of the court’s detailed opinion, it is highly probable that Maryland state officials will express disappointment with the ruling. Governor Wes Moore’s administration, along with legislative leaders who championed the tax, are expected to defend its original intent—to ensure large, profitable tech companies contribute to public services like education. It is almost certain that the state will announce its intention to appeal the decision to the circuit court, emphasizing the state’s commitment to securing stable funding for critical programs. The Maryland Comptroller’s office would be tasked with managing the refund process, pending any stays.
From Petitioners and Industry Groups: Representatives from the Tax Foundation, the U.S. Chamber of Commerce, and other advertising and business associations are expected to welcome the decision as a validation of their long-held constitutional concerns. They will likely reiterate their warnings against states attempting to impose similar taxes, emphasizing the chilling effect such taxes could have on innovation and economic growth. Jared Walczak, Senior Fellow at the Tax Foundation, whose analysis closely mirrored the court’s eventual findings, is expected to highlight the comprehensive nature of the victory.
Legal Experts: Independent legal scholars specializing in tax law and constitutional issues are likely to view the ruling as a strong reaffirmation of established federal and constitutional principles governing state taxation of interstate commerce. Many will point to the court’s thorough analysis of ITFA, the Commerce Clause, and the Due Process Clause as a significant precedent. They may also offer assessments of the state’s likelihood of success on appeal, with many suggesting that overturning a decision grounded in three separate, robust legal arguments will be an uphill battle for Maryland.
The Road Ahead: Appeals and Legal Battles
The Maryland Tax Court, an administrative tribunal, has issued a summary judgment, which means the state is likely to file for judicial review by a circuit court within the mandatory 30-day window. Under the current ruling, companies that paid the tax are entitled to refunds, though these refunds will almost certainly be stayed pending the circuit court’s review process.
Review by the circuit court would typically not involve new evidentiary hearings but would instead focus on the Maryland Tax Court’s administrative record and legal interpretations. Should Maryland lose at the circuit court level, the losing party would then have the right to appeal to Maryland’s appellate court. There is also the possibility that the Maryland Supreme Court could expedite the process by granting early certiorari and taking the case directly, bypassing intermediate appellate stages, given the case’s significant public interest and fiscal implications.
It appears all but certain that Maryland will pursue circuit court review. However, if the state faces another defeat there, its willingness to continue appeals to higher courts may diminish. The overwhelming nature of the petitioners’ victory, encompassing three distinct legal grounds, should give the state considerable pause regarding its chances on further appeal. The longer the legal battle extends, the more protracted the uncertainty for taxpayers and the state budget, and potentially the greater the financial liability for Maryland when it eventually has to refund years of improperly collected taxes, possibly with interest.
National Ramifications: A Warning to Other States
The Maryland Tax Court’s decision carries immense weight beyond the Old Line State, serving as a critical precedent and a stark warning to policymakers in other jurisdictions. Illinois and Utah, which have recently adopted their own digital advertising taxes this year, are undoubtedly scrutinizing this ruling with intense interest.
While the specifics of Illinois’s and Utah’s taxes may not be identical to Maryland’s—and thus might not face the exact same set of challenges—the core legal principles articulated by the Maryland court are universally applicable. The court’s findings on the Internet Tax Freedom Act, the requirements for fair apportionment under the Commerce Clause, the need for a fair relation to in-state services, and the strictures of the Due Process Clause are fundamental tenets of U.S. tax law.
Lawmakers in any state considering a digital advertising tax must now confront the reality that such measures are highly vulnerable to constitutional and federal challenges. The Maryland ruling provides a clear roadmap for potential legal opposition, highlighting the pitfalls of discriminatory taxation, reliance on global revenues, and insufficient nexus to in-state activities. It suggests that a legislative desire to tax "big tech" must be carefully balanced with adherence to long-established legal precedents designed to foster a free and fair interstate economy. For many states, this decision offers a preview of their own likely future should they choose to adopt similar, legally tenuous tax schemes.
Broader Context: The Quest for Digital Taxation
The Maryland saga unfolds against a backdrop of global efforts to tax the digital economy. Many countries in Europe and elsewhere have implemented or proposed "digital services taxes" (DSTs), often targeting the same large multinational tech companies. These international efforts have also faced challenges, both legally and diplomatically, prompting ongoing discussions at the OECD for a more unified global approach to digital taxation.
The Maryland court’s ruling underscores the particular challenges within the U.S. federal system. Unlike sovereign nations that can unilaterally impose DSTs, U.S. states are constrained by federal law and the U.S. Constitution, particularly the Commerce Clause, which acts as a powerful check on state economic protectionism and discriminatory taxation. This ruling reaffirms that states cannot simply replicate international DST models without careful consideration of these unique domestic legal limitations.
In conclusion, the Maryland Tax Court’s striking down of the state’s digital advertising tax is a monumental development. It validates the long-standing legal arguments of industry groups, creates immediate fiscal pressures for Maryland, and sets a powerful precedent that will undoubtedly reshape the legislative landscape for digital taxation across the United States. While the legal battle is far from over, the comprehensive nature of this initial victory provides a clear indication of the significant constitutional hurdles states face in their pursuit of new revenue from the digital economy.
