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- Click ‘Get Form’ to open the IL-1120-ST in our editor.
- Begin by entering your tax year at the top of the form. Specify the beginning and ending dates clearly.
- In Step 1, identify your small business corporation by entering your complete legal business name and FEIN. If applicable, check the box for any name changes.
- Provide your mailing address in Step 1B. If this is your first return or if you have an address change, be sure to check the corresponding box.
- Proceed to Step 2 to calculate your ordinary income or loss. Fill in all relevant fields based on your financial records.
- Continue through Steps 3 to 9, ensuring that you accurately report all income, deductions, and taxes owed as per the instructions provided on each section.
- Finally, review all entries for accuracy before signing at the bottom of the form. Use our platform's features to save and share your completed document easily.
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| 2025 | 4.4 Satisfied (30 Votes) | |
| 2023 | 4.8 Satisfied (24 Votes) | |
| 2022 | 4.5 Satisfied (60 Votes) | |
| 2021 | 4.9 Satisfied (29 Votes) | |
| 2020 | 4.4 Satisfied (112 Votes) | |
| 2019 | 4.4 Satisfied (235 Votes) | |
| 2018 | 4.4 Satisfied (97 Votes) | |
| 2017 | 4.2 Satisfied (35 Votes) | |
| 2016 | 4.4 Satisfied (612 Votes) | |
| 2015 | 4 Satisfied (42 Votes) | |
| 2014 | 4.3 Satisfied (65 Votes) | |
| 2013 | 4 Satisfied (22 Votes) | |
| 2010 | 4.4 Satisfied (79 Votes) |
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