Illinois dept of revenue forms 2026

1. Click ‘Get Form’ to open the IL-4506 Request for Copy of Tax Return in the editor.
2. Begin by providing taxpayer information. Enter the name as it appears on the tax document, along with the mailing address where you want the documents sent.
3. Next, specify the type of tax document you are requesting. Check the appropriate box and provide the form number and tax period(s) for clarity.
4. Indicate how many copies you need. Remember, there is a $5 charge for each copy requested, plus an additional fee for certified copies.
5. Calculate your total amount due by multiplying the number of copies by $5 and adding any certification fees.
6. Finally, sign and date the form, ensuring that all information is accurate before submission.

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