Crypto Industry Challenges Illinois 0.2% Transaction Tax

An amicus brief filed by 18 crypto companies and organizations argues that Illinois' proposed 0.2% transaction tax is discriminatory, vague and impossible for some targeted entities to comply with. The measure applies to crypto businesses with receipts above $100,000, but its definitions leave firms uncertain about who qualifies as a broker and which activities are taxable. Illinois agreed to delay implementation from Jan. 1 for at least six months while legal challenges proceed.

Why it matters

The dispute exposes a core difficulty in regulating crypto: tax agencies are trying to place traditional broker duties on software developers and infrastructure providers that do not custody customer assets or maintain customer accounts. The filing argues that these entities cannot collect taxes from users, determine where a transaction occurred or access the information required to comply.

The brief was signed by a16z, Uniswap, Aave Labs, Chainlink Labs, Paradigm, Phantom Technologies, Stand With Crypto and the DeFi Education Fund. Their participation gives the challenge substantial industry support and broadens the debate from one tax to the treatment of non-custodial software and decentralized finance.

Market impact

For now, the tax remains on hold and no final ruling has established who must pay. A legal victory could force Illinois to narrow the law or define taxable activity more clearly, potentially giving other states a model for regulating crypto transactions. If the statute survives the challenge, it could become a template for transaction taxes on decentralized services, raising compliance costs for DeFi platforms and developers with limited ability to access customer funds or transaction data.

The measure was approved under Governor JB Pritzker and was estimated to bring as much as $60 million into the state budget. Its broader market significance lies in whether regulators can define and collect taxes from an open crypto ecosystem without treating software providers as custodial brokers.