| Form IL-1040 | Individual Income Tax Return |
| Form IL-1040ES | Estimated Income Tax |
| Form IL-1040-V | Payment Voucher for Individual Income Tax |
| Form IL-505-I | Automatic Extension Payment for Individuals |
| Form IL-2210 | Computation of Penalties for Individuals |
| Form IL-2210 Step 6 | Annualized Income |
| Form IL-4562 | Special Depreciation |
| Form IL-8453 | Declaration for Electronic Filing |
| Schedule G | Voluntary Charitable Donations |
| Schedule CR | Credit for Tax Paid to Other States |
| Schedule ICR | Credits |
| Schedule K-1-T | Beneficiary's Share of Income & Deductions |
| Schedule K-1-P | Partner's or Shareholder's Share of Income, Deductions, Credits, & Recapture. |
| Schedule M | Other Additions and Subtractions for Individuals |
| Schedule NR | Nonresident & Part-Year Resident Computation of Tax |
| Form IL-1040-X | Amended Individual Income Tax Return |