State & Local Tax

Illinois Back-To-School State Sales Tax Holiday

Illinois shoppers can purchase qualifying clothing, footwear, and school supplies at a reduced state sales tax rate during the August 7-16, 2026, back-to-school sales tax holiday. This special announcement outlines qualifying items, reporting considerations for retailers, and what tax practitioners should know before the temporary tax reduction begins.

Illinois Tax Issues & Updates 2026: Questions Answered

Following the 2026 Illinois Tax Issues & Updates webinar, our instructor answers attendee questions on IDOR procedures, credits, PTE capital gains, apportionment, and other Illinois-specific issues.

Illinois Amnesty & Income Tax Law Changes: What You Need to Know

The 2025 Illinois Tax Delinquency Amnesty Act provides taxpayers with a limited-time opportunity to pay outstanding Illinois state tax liabilities without penalties or interest.

Illinois Tax Issues & Updates 2025 – Questions Answered

The University of Illinois Tax School held a webinar on January 28 on Illinois Tax Issues & Updates. The instructor put together answers to questions submitted during the webinar as…

Illinois Gives Tax Credit Act and the Social Security Fairness Act

Learn about the Illinois Gives Tax Credit Act, offering a 25% state tax credit for contributions to approved endowment funds, and the Social Security Fairness Act, which increases benefits for retirees impacted by WEP and GPO.

IDOR to Abate Late Estimated Payment Penalties for PTE Tax

Entities that made late 4th-quarter estimated PTE tax payments received good news when IDOR announced the department would abate the late payment penalties for some filers. The department released a…