Illinois Schedule VDA – Voluntary Disclosure Agreement Form (2026)

Last reviewed: 2025-11-07

Use the Illinois Tax Form Calculator Schedule VDA: Voluntary Disclosure Agreement Form as a stand alone tax form calculator to quickly calculate specific amounts for your 2026 Illinois state tax return. Alternatively, you can use one of our Combined Federal and State Tax Estimators to quickly calculate your salary, tax, and take-home pay.

Schedule VDA supports taxpayers entering into a Voluntary Disclosure Agreement (VDA) with the Illinois Department of Revenue. This program allows individuals and businesses that have not filed or fully reported taxes to come forward voluntarily, pay back taxes for a limited lookback period, and receive penalty relief and reduced exposure. For individual taxpayers, it is often used to correct non-filed Illinois income tax returns or previously unreported out-of-state income.

When to Use Schedule VDA

Use this form if you are disclosing previously unreported Illinois taxable income and wish to calculate the tax due under the terms of your voluntary disclosure agreement. Typically, the Illinois DOR limits assessments to the most recent 3 years and waives penalties in full when the disclosure is made in good faith and before official contact.

How the Illinois VDA Program Works

1. You (or your representative) contact the Illinois Department of Revenue anonymously to request participation in the VDA program.
2. If accepted, you must file the missing returns and pay tax for the designated lookback period (generally 3 years).
3. Penalties are typically waived, and interest is limited to statutory requirements.
4. Schedule VDA helps calculate your disclosure liability, documenting prior unreported income, tax computation, and penalty relief.

Once completed, attach Schedule VDA to your IL-1040 filings covering the lookback period and include payment for the disclosed liability.

Benefits of Voluntary Disclosure

Participating in the VDA program allows you to settle back tax obligations without fear of criminal prosecution or excessive penalties. It also prevents the Department from assessing older years beyond the defined lookback period. For most individuals, this means significant savings and restored compliance status.

Example

Example: A taxpayer failed to file Illinois returns for 3 years while earning Illinois-source income. Under VDA, the taxpayer reports $60,000 of unfiled income. At the 4.95% rate, tax due equals $2,970 per year × 3 = $8,910 total. Penalties are waived, leaving only tax and statutory interest payable.

Eligibility and Restrictions

• You must not have been previously contacted by the Illinois DOR regarding the liability.
• Disclosure must be voluntary, truthful, and complete for all relevant tax types.
• Payment must accompany the signed agreement to qualify for penalty waiver.
• VDAs can also apply to sales, use, or business taxes when coordinated through approved channels.

Long-Term Value

Illinois maintains one of the most taxpayer-friendly voluntary compliance programs in the U.S. By proactively disclosing, individuals eliminate legal uncertainty and protect their financial standing. It’s a practical, lawful path to clear past tax obligations and avoid enforcement actions that could otherwise include liens or audits.

Related Forms and Resources

• Form IL-1040 – Individual Income Tax Return
• Form IL-1040-X – Amended Return
• Schedule NR – Nonresident and Part-Year Resident
• Visit the Illinois Department of Revenue Voluntary Disclosure Program for official eligibility and application instructions.

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Important Notes

All calculations are estimates for guidance only. Always review your return and consider professional advice when submitting official filings.