Who Collects It: The tax is imposed on "digital asset brokers" operating in Illinois or serving Illinois customers above certain thresholds. In practice, that appears to mean exchanges, custodians, trading platforms, and other intermediaries rather than individual users directly. Based on the law's structure, taxable activity could include customers sending digital assets to an exchange wallet or an exchange moving assets between wallets it controls. However, exactly which transfers will be taxed depends on how regulators interpret and implement the law. Opponents also argue that any costs imposed on those businesses will ultimately be passed through to customers.