DEPARTMENT OF REVENUE SERVICES - business ct 2026

1. Click ‘Get Form’ to open it in the editor.
2. Begin by entering your taxpayer information as it appears on your joint Connecticut income tax return. This includes your first name, middle initial, last name, and Social Security Number.
3. Next, provide your spouse's information in the designated fields, ensuring accuracy with their name and Social Security Number.
4. Fill in your mailing address and daytime telephone number. Make sure to check the boxes regarding eligibility for filing this form.
5. Proceed to the Allocation Items section. Enter the amounts for Connecticut adjusted gross income, total tax, and any tax withheld from W-2/1099 forms. Attach all necessary documents as specified.
6. Complete the declaration section by signing and dating the form. If applicable, ensure that a paid preparer signs as well.

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