The US Department of Justice, business organizations, and decentralized finance firms have joined legal challenges to Illinois' 0.2% digital asset tax, arguing the measure discriminates against cryptocurrency transactions and imposes taxes regardless of investor profitability.
Over the past week, the Justice Department filed a statement of interest, while the US Chamber of Commerce and the Securities Industry and Financial Markets Association (SIFMA) submitted legal briefs. A coalition including venture capital firms Andreessen Horowitz and Paradigm, along with crypto protocols Uniswap and Aave Labs, also filed arguments supporting the challenge.
Tax Structure and Legal Timeline
Illinois enacted the law in June, imposing a 0.2% tax on the value of digital assets exchanged, transferred, or stored, regardless of whether transactions generate profit. The Digital Chamber filed the first lawsuit in July against Illinois Attorney General Kwame Raoul and state revenue official David Harris. The Blockchain Association and Crypto Council for Innovation filed a separate challenge in August.
Originally scheduled for January 1, 2027, the implementation date was delayed to July 1, 2027, providing additional time for legal proceedings. Illinois' governor's budget office projected the tax would generate $60 million in fiscal year 2027 revenue.
Business Groups Cite Compliance Burdens
In November filings, SIFMA and the US Chamber of Commerce warned that the tax would affect banks, broker-dealers, custodians, and asset managers nationwide, creating significant compliance costs. They highlighted a fundamental problem: customers who lose money face the same tax as those earning profits.
The groups argued that firms would need to develop systems to identify Illinois customers, value digital assets, and determine taxable transactions while facing potential criminal penalties for violations. They contended the tax discriminates against digital asset services compared to traditional assets and potentially violates federal internet tax protections and constitutional requirements for interstate commerce.
Federal Policy Conflicts and Developer Liability
The Justice Department argued that Illinois' tax undermines federal efforts to promote cryptocurrency innovation and US sector leadership, citing the Strategic Bitcoin Reserve and the GENIUS Act establishing federal stablecoin rules.
DeFi firms raised separate concerns about tax collection responsibility. They argued that Illinois' proposed rules could impose obligations on software developers and blockchain participants who lack customer information, control over user funds, or the ability to collect taxes.
