Illinois Tax Amnesty Program: October 1–November 17, 2025

The Illinois Tax Delinquency Amnesty Act allows eligible taxpayers to pay outstanding state tax liabilities and receive a waiver of certain penalties and interest during the amnesty period.

The program applies to eligible liabilities — including sales and income tax — for tax periods ending after June 30, 2018 and prior to July 1, 2024. To qualify, taxpayers must file any missing returns, correct prior filings if necessary, and pay the full tax due by November 17, 2025.

This limited-time opportunity may provide meaningful financial relief for businesses and individuals with unresolved Illinois tax obligations. For details on eligibility and exclusions, visit the Illinois Department of Revenue bulletin:
https://tax.illinois.gov/research/publications/bulletins/fy-2026-01.html

If you believe you may qualify, Siepert & Co., LLP can assist with evaluating your eligibility, preparing filings, and ensuring timely compliance before the deadline.