A separate Form IL-4506, Request for Copy of Tax Return, must be completed for each tax type requested.
Identification: You must submit a copy of a government-issued identification.
Not the taxpayer: If you are not the taxpayer, please enclose a copy of your authorization to receive this information.
Identification number: You must use this same identification number to obtain a copy of your tax return.
Certification: Certification usually is required only for judicial or administrative proceedings or for attachments to another state's tax return.
Vehicles: Attach a copy of the title if requesting vehicle tax documents.
| Question | Answer |
|---|---|
| Form Name | Form IL-4506 |
| Form Length | 1 page |
| Fillable? | Yes |
| Fillable fields | 26 |
| Avg. time to fill out | 5 min |
| Edition | R-02/20 |
| Issuing agency | Illinois Department of Revenue |
| Where to send | Records Management Division 2-202, Illinois Department of Revenue, PO Box 19014, Springfield IL 62794-9014 |
| Matches the agency's file | Yes, checked October 4, 2026 |
| Other names | IL-4506, IL 4506, Form IL-4506, Illinois IL-4506, Request for Copy of Tax Return |
| Official source | Form IL-4506 (Rev R-02/20), Illinois Department of Revenue |
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