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- Click ‘Get Form’ to open the CT-1120SI 2017 form in the editor.
- Begin by entering the name of the pass-through entity (PE) and its Federal Employer ID Number (FEIN) in the designated fields.
- Fill in the address details, including number and street, PO Box (if applicable), city, state, and ZIP code.
- Select the type of PE from the options provided: Electing large partnership, Limited liability partnership, Limited partnership, General partnership, S corporation, or Partnership treated as a partnership.
- Indicate your request for a five-month extension by selecting the appropriate checkbox and entering any necessary dates for your taxable year.
- Estimate your Connecticut composite income tax liability for 2017 on Line 3. If no tax is due, enter zero '0'.
- Complete the declaration section by signing and dating where indicated. Ensure all information is accurate to avoid penalties.
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| Versions | Form popularity | Fillable & printable |
|---|---|---|
| 2025 | 4.9 Satisfied (28 Votes) | |
| 2022 | 4.4 Satisfied (46 Votes) | |
| 2021 | 4.9 Satisfied (33 Votes) | |
| 2020 | 4.4 Satisfied (101 Votes) | |
| 2019 | 4 Satisfied (70 Votes) | |
| 2018 | 4.4 Satisfied (61 Votes) | |
| 2017 | 4.3 Satisfied (92 Votes) | |
| 2016 | 4.3 Satisfied (39 Votes) | |
| 2015 | 4 Satisfied (49 Votes) | |
| 2014 | 4 Satisfied (47 Votes) | |
| 2013 | 4 Satisfied (55 Votes) | |
| 2012 | 4 Satisfied (28 Votes) |
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