Illinois DOR Issues Guidance on Tax Requirements for Subchapter S Corporations

The Illinois Department of Revenue (DOR) issued guidance on tax requirements for subchapter S Corporations in the state. The guide includes information on replacement tax, pass-through entity (PTE) tax, tax rates, tax base calculations, filing requirements, due dates, and procedures for amending returns or addressing federal changes. [Ill. Dep’t of Revenue, Subchapter S (Small Business) Corporation, 02/01/25]

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