2023 Illinois Compiled Statutes > Chapter 20 > Dpt Of Revenue Current as of: 2023 | Check for updates | Other versions 20 ILCS 2505 Civil Administrative Code of Illinois. (Department of Revenue Law) 20 ILCS 2510 Certified Audit Program Law 20 ILCS 2515 Illinois Department of Revenue Sunshine Act 20 ILCS 2520 Taxpayers’ Bill of Rights Act 20 ILCS 2530 Taxation Disclosure Act