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Fillable Online Form CT-5.1 Request for Additional Extension of Time to ... 2026
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How to use or fill out Fillable Online Form CT-5.1 Request for Additional Extension of Time to File
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- Click ‘Get Form’ to open it in our editor.
- Begin by entering the tax period, including the beginning and ending dates, along with your Employer Identification Number (EIN) and file number.
- Fill in your business telephone number, legal name of the corporation, trade name/DBA, and mailing address. Ensure all information is accurate to avoid processing delays.
- Indicate your state or country of incorporation and provide additional details if you are a foreign corporation.
- In the section requesting an additional extension, mark an X in the appropriate boxes for the forms you are filing. If applicable, complete the combined group information by entering the EIN of the designated agent or parent.
- Provide a detailed explanation for needing additional time to file in the designated area.
- Finally, certify that all information is true by signing and providing contact details for both the authorized person and preparer if applicable.
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| Versions | Form popularity | Fillable & printable |
|---|---|---|
| 2025 | 4.1 Satisfied (40 Votes) | |
| 2024 | 4.7 Satisfied (23 Votes) | |
| 2023 | 4.7 Satisfied (55 Votes) | |
| 2022 | 4.3 Satisfied (34 Votes) | |
| 2021 | 4.9 Satisfied (42 Votes) | |
| 2020 | 4.3 Satisfied (114 Votes) | |
| 2019 | 4.3 Satisfied (189 Votes) | |
| 2018 | 4.3 Satisfied (139 Votes) | |
| 2017 | 4.3 Satisfied (43 Votes) | |
| 2015 | 4.4 Satisfied (114 Votes) | |
| 2014 | 4 Satisfied (35 Votes) | |
| 2013 | 4.1 Satisfied (28 Votes) | |
| 2012 | 4.2 Satisfied (61 Votes) | |
| 2011 | 4.4 Satisfied (137 Votes) |
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