Indiana Finalizes Rules for Tax Amnesty Program Granting Penalty and Interest Relief

The Indiana Department of Revenue (DOR) has adopted an interim final rule establishing the procedures for its 2026 tax amnesty program, which will run from July 15 through September 9. The program offers individuals and businesses a limited-time opportunity to pay past-due state taxes in exchange for a full waiver of penalties, interest, and collection fees.

Tax amnesty programs like Indiana's present a valuable window for businesses to resolve outstanding liabilities without the crushing weight of accumulated interest and penalties. For companies that may have fallen behind due to complex circumstances or simple oversight, this is a critical chance to get right with the state.

The initiative, authorized by the Indiana General Assembly during the 2025 legislative session and later expanded, is designed to encourage voluntary compliance and recover unpaid tax revenue for the state. According to guidance from the DOR, the program covers most “listed taxes” it administers, including individual and corporate income taxes, sales and use taxes, withholding taxes, and fuel taxes. However, certain liabilities are explicitly excluded, such as property taxes and unemployment insurance taxes, which are not managed by the DOR, as well as taxes related to wagering.

To be eligible, the unpaid tax liabilities must be for tax periods ending before January 1, 2024. This eligibility window was expanded by Senate Bill 243, which Governor Mike Braun signed on March 5, 2026. The original legislation from 2025 had set the cutoff for periods ending before January 1, 2023. A significant restriction applies: any taxpayer, whether an individual or a business, that participated in Indiana's previous amnesty programs in either 2005 or 2015 is ineligible for the 2026 program. The DOR has provided an online eligibility lookup tool through its INTIME customer portal for taxpayers to confirm if they have qualifying liabilities.

In our experience, determining eligibility isn't always straightforward. The exclusion of prior participants and the specific tax types covered mean businesses need a clear understanding of their historical filings. It's also crucial to compare this limited-time offer against the state's ongoing voluntary disclosure program, as one may be more advantageous. This is precisely the kind of analysis where professional tax preparation and compliance services are invaluable.

The amnesty period will open on July 15, 2026, and close on September 9, 2026. This represents a slight shortening of the window, as earlier guidance had suggested a September 15 end date. During this eight-week period, participants must apply and either pay their base tax liability in full or enter into a payment plan. Applications can be submitted through the DOR's INTIME portal or via United Collection Bureau (UCB), a third-party agency partnering with the state for the program.

While the application window is tight, the program offers some flexibility on payment. Taxpayers who establish a payment plan have until June 7, 2027, to pay their liability in full to receive the benefits of the amnesty. Successful completion requires that the base tax is fully paid by the deadline and that all previous and current Indiana tax returns have been filed. Upon successful completion, the DOR will waive all associated penalties, interest, and collection fees, which can often exceed the original tax amount.

As with prior amnesty initiatives, the state has included a significant disincentive for non-participation. According to an analysis by Taft Law, taxpayers who are eligible for the program but choose not to resolve their debts may be subject to increased penalties on those liabilities after the amnesty period concludes. This “stick” approach is intended to maximize participation by creating a clear financial risk for those who ignore the opportunity.

The decision to participate requires a careful cost-benefit analysis. The threat of increased penalties for non-participation adds significant weight to this choice. For businesses in Indiana weighing their options, the experts at C&S Finance Group LLC can provide the necessary guidance to make an informed decision. Explore how our tax preparation and compliance services can help at csfinancegroup.com.

With the rules now finalized and the program dates set, Indiana businesses with potential outstanding liabilities are encouraged to begin reviewing their records immediately. The DOR is expected to send notices to taxpayers with known eligible debts, but taxpayers do not need a letter to participate. The focus will now shift to the program's launch on July 15 and, subsequently, to its overall success in bringing taxpayers into compliance and boosting state revenue collections.