Department of Revenue Services - State of Connecticut 2026

1. Click ‘Get Form’ to open it in the editor.
2. Begin by entering the beginning and ending dates of your organization’s income year at the top of Form CT-990T. Ensure you also input your Connecticut Tax Registration Number and FEIN.
3. Check all applicable boxes regarding changes such as mailing address, initial return, amended return, or final return.
4. If this is a final return, check the corresponding box and provide the reason for filing it. Make sure to include any necessary details about dissolution or withdrawal from the state.
5. Complete the Computation of Income section by entering figures from your federal Form 990-T as required. Follow through with the Computation of Tax section to determine your tax liability.
6. Finally, ensure that both a corporate officer and any paid preparer sign the form where indicated, providing their respective identification numbers.

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