A Limited-Time Opportunity: Understanding the 2025 Illinois Tax Delinquency Amnesty Act
For individuals and businesses with outstanding tax liabilities in Illinois, a rare and invaluable opportunity has arrived. The 2025 Illinois Tax Delinquency Amnesty Act, which was enacted to provide relief to taxpayers, offers a limited window to settle past-due tax debts and have eligible penalties and interest completely waived.
This program, running from October 1, 2025, through November 17, 2025, is designed to help taxpayers get back into compliance without the burden of escalating fees.
Navigating the specific rules and requirements is crucial, and below is a detailed guide to what you need to know to take advantage of this unique program.
Tax Amnesty
The Illinois Tax Delinquency Amnesty Act provides the opportunity for taxpayers to pay outstanding eligible tax liabilities and to have eligible penalties and interest forgiven on taxes paid in full during the amnesty period. Illinois taxpayers owing only penalty and interest, even for eligible tax liabilities, do not qualify for the amnesty program.
Eligibility
The program is not a blanket amnesty; it applies to specific tax periods. Eligible liabilities are taxes due from periods ending after June 30, 2018, and prior to July 1, 2024. Participation in the amnesty program results in eligible penalties and interest being waived.
Participation
To participate, you must make full payment of your existing eligible tax liability between October 1, 2025, and November 17, 2025. This is a strict deadline that must be met. Additionally, all tax returns for eligible years must be filed prior to or during the amnesty period.
Payments
Making the correct payment is a critical step to ensure your participation is successful. Payments for eligible tax liabilities can be made online using checking or savings accounts, by credit card, by check or money order, and in-person at Illinois Department of Revenue (“IDOR”) locations in Springfield, IL and Chicago, IL. Importantly, credit cards can only be used for individual income tax payments and are not available to make business tax payments.
The IDOR encourages separate payments for each tax liability being paid; however, one combined payment can still be made. If a combined payment is made, taxpayers must clearly identify each eligible tax liability being paid. Tax liabilities must be identified by tax type, tax period, and amount.
A failure to specify where the payment should be directed may result in payment being applied to periods not eligible for amnesty.
Returns
In order to qualify for amnesty, each applicable tax and tax period requires an appropriate return to be completed. Failure to file a return for the specified tax period means filing an original return, while filing to fix a previously incorrect return requires filing an amended return. Supporting documentation, based on the instructions found on tax return form, must be attached to the submitted return. Payment toward eligible tax liabilities should also be included with original or amended returns.
Illinois taxpayers can access prior year forms and instructions on the IDOR website, and missing returns can be filed online for Illinois taxpayers with a MyTax Illinois account. Business returns for certain types of taxes, including sales and use tax and withholding income tax, can also be filed online through a MyTax Illinois account.
Eligible tax liabilities and returns must be paid and filed in full October 1, 2025, through November 17, 2025, to qualify for the waiver of penalty and interest.
Audit Impact on Amnesty Eligibility
What if your tax liability is currently under audit? The program addresses this as well. For a recently completed audit, or an audit that will be completed before November 17, 2025, the full amount of the audit tax liability must be paid during the amnesty period (October 1, 2025, through November 17, 2025) to qualify for amnesty.
For an audit that is currently in process and cannot be completed before November 17, 2025, the IDOR requires taxpayers to estimate the tax liability due, file the appropriate return, and pay the tax balance in full. IDOR auditors can be contacted for additional information.
IDOR also notes that if final audit liability exceeds the paid estimate, penalties and interest on the unpaid amount (the difference between the final audit liability and paid estimate) will not be waived.
Tax Liability in Private Collections
For taxpayers with tax liability that has been referred to a private collections agency, the IDOR instructs taxpayers to pay the private collection agency, rather than the IDOR directly. Taxpayers in private collections can contact the collection agency to determine the total amount of amnesty debt. Additionally, taxpayers can follow instructions on any amnesty letter sent by a private collection agency.
Refunds and Amnesty Liability
If you have a pending refund, it’s important to know how it impacts your amnesty eligibility. Pending refunds from prior year tax returns cannot be used to pay an amnesty liability. The full amount of eligible tax liability must be paid to receive benefits of the tax amnesty program, even if a taxpayer has a pending refund.
Additionally, overpayment on amnesty liability may result in a refund or credit in the amount of the overpayment; however, interest will not be paid on overpayments.
Court Proceedings
Certain legal proceedings can impact your eligibility for the program. If currently protected by Federal Bankruptcy Court, taxpayer participation in the 2025 Illinois Tax Amnesty Program may require court approval. To ensure eligibility, contact IDOR and provide the bankruptcy court and case number.
Amnesty program participation is prohibited for taxpayers who are parties to criminal investigations. Participation is also prohibited for taxpayers with pending civil or criminal cases related to amnesty-eligible tax collected by IDOR.
Participation in the amnesty program is allowed if the tax-related civil case is dismissed before the end of the amnesty period on November 17, 2025.
Exclusions
Not all tax liabilities are eligible for amnesty. The following taxes and other items are excluded from the IDOR amnesty program and will not be waived:
- Taxes not collected by IDOR – including property, estate, franchise, insurance, and local taxes;
- Balances due for periods before June 30, 2018 or after July 1, 2024;
- Motor Fuel Use Tax or other International Fuel Tax Agreement liabilities;
- Licensing fees, tire user fees, permits, surcharges;
- Lien filing and lien release fees;
- Books and records penalties;
- Bad check penalties;
- Collection agency service fees;
- Penalty and interest on tax liabilities that were fully paid prior to amnesty; and
- Penalties and fees not based on tax liability – including abusive tax shelter penalties, frivolous return penalties, and certain audit penalties.
Expert Guidance for a Fresh Start
The Illinois Tax Delinquency Amnesty Act allows taxpayers to be forgiven for eligible penalties and interest related to outstanding eligible tax liabilities. If taxpayers file an appropriate return, either original or amended, and pay their balance in full between October 1, 2025, and November 17, 2025, the IDOR will waive eligible penalties and interest.
The window to participate in this program is narrow and the rules are complex. Missing a deadline or making a single error in filing or payment can disqualify you from receiving the full benefits of amnesty. If you have outstanding tax liabilities in Illinois and are considering participation, having a trusted advisor on your side is essential.
Milton Law Group has extensive experience assisting individuals and businesses with tax controversy and compliance issues. Our team can help you determine your eligibility, navigate the filing process, and ensure you meet all requirements to successfully resolve your tax issues under the Illinois Amnesty Program.
Don’t miss this opportunity for a fresh start. Contact Milton Law Group today to schedule a confidential consultation and learn how we can help.