Illinois DOR Adopts Amendments to Electronic Tax Return Filing Regulation

The Illinois Department of Revenue (DOR) adopted amendments to the rule governing electronic filing of tax returns. The regulation: 1) details the methods by which taxpayers can provide electronic signatures when required to file documents electronically; and 2) outlines the procedures for using signatures not explicitly permitted without department approval. The regulation took effect Aug. 11. [Ill. Dep’t of Revenue, Regs. Section 760.230, 08/22/25 Ill. Reg.]