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About IDOR
| Name | Description | |
|---|---|---|
| IL-8453 | Individual Income Tax Electronic Filing Declaration (R-12/12) | |
| IL-8633-I | Application to File Individual Income Tax Returns Electronically (R-12/12) | |
| IL-8633-B | Business Electronic Filing Enrollment (R-01/11) | |
| IL-8948 | Illinois Electronic Filing Opt-Out Declaration (R-11/11) | |