Uniswap, a16z and Paradigm back challenge to Illinois DeFi tax

A coalition of DeFi builders led by Uniswap, Andreessen Horowitz (a16z) and Paradigm have filed a court brief supporting the crypto industry’s lawsuit against Illinois’s 0.2% digital asset tax. The coalition is warning that the state’s draft rules would turn fee-charging decentralized exchanges and their frontends into tax-collecting brokers. It is like a repeat of a fight that many thought was already won in Washington, but this time around it is at the state level. In April 2025, Congress and President Donald Trump scrapped a federal IRS rule that would have forced DeFi platforms to report user transactions as if they were brokers. Who signed on, and who else is in the fight?

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