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Apr 25, 2026 Tax Pros Home File Businesses and self-employed Small business. Licenses, and Permits Secretary of State Step-by-Step. Taxation Illinois
Feb 1, 2018 Use Form 7004 to request an automatic extension of time to file certain business income tax, information, and other returns.
The University of Illinois Tax School provides high-quality, practical federal continuing education and CPE credit for CPAs, EAs, and tax preparers.