2025 Form CT-1040 TCS
Connecticut Tax Calculation Schedule
Download or Print 2025 Connecticut Form CT-1040 TCS
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About Connecticut Form CT-1040 TCS
Connecticut Form CT-1040 TCS is the tax calculation schedule used to calculate Connecticut income tax when the tax tables do not apply or when the instructions direct you to use the schedule. It can be used with Form CT-1040 for full-year residents or Form CT-1040NR/PY for part-year residents and nonresidents.
The 2025 Form CT-1040 TCS PDF includes the Tax Calculation Schedule and Tables A through E for personal exemptions, initial tax calculation, tax rate phase-out add-back, tax recapture, and personal tax credits. Use the Form CT-1040 instructions or Form CT-1040NR/PY instructions to decide whether the tax calculation schedule or the CT-1040 Tax Tables apply to your return.
Connecticut Form CT-1040 TCS PDF Files by Year
Click any of the Connecticut Form CT-1040 TCS PDF links above to download, save, view, and print the file for the corresponding year. These free PDF files are unaltered and are sourced directly from the publisher.
Related Connecticut Tax Calculation Forms
Need to download more state income tax forms? View the 2025 Connecticut other income tax forms list.
| Form Code | Form Name |
|---|---|
| CT-1040 Tax Tables | Connecticut Income Tax Tables to $102K |
| Form CT-1040ES | Connecticut Estimated Income Tax Payment Coupon for Individuals |
| Form CT-1040V | Connecticut Electronic Filing Payment Voucher |
| Form CT-6251 | Connecticut Alternative Minimum Tax Return |
Frequently Asked Questions (FAQ)
Here are answers to common questions about downloading, printing, completing, and using 2025 Connecticut Form CT-1040 TCS.
What is 2025 Connecticut Form CT-1040 TCS used for?
Use Form CT-1040 TCS to calculate Connecticut income tax when you cannot use the Connecticut tax tables or when the return instructions direct you to use the tax calculation schedule. The schedule uses Connecticut income, exemptions, tax rates, phase-out amounts, recapture rules, and personal tax credits to calculate the tax amount.
Who should use Connecticut Form CT-1040 TCS?
Full-year residents may use Form CT-1040 TCS with Form CT-1040. Part-year residents and nonresidents may use Form CT-1040 TCS with Form CT-1040NR/PY when their Connecticut instructions require a tax calculation schedule.
Is Form CT-1040 TCS the same as the CT-1040 Tax Tables?
No. The CT-1040 Tax Tables are lookup tables for income amounts within the published table range. Form CT-1040 TCS is the calculation schedule used when the tax tables do not apply or when the instructions require a separate calculation.
Where do I enter the tax from Form CT-1040 TCS?
After completing Form CT-1040 TCS, enter the calculated Connecticut income tax on the tax line for your Connecticut return. For 2025, the schedule directs filers to enter the result on Form CT-1040, Line 6, or Form CT-1040NR/PY, Line 8.
Where can I find the Form CT-1040 TCS instructions?
The Form CT-1040 TCS PDF includes line guidance and Tables A through E. Use it with the Form CT-1040 instructions or the Form CT-1040NR/PY instructions for your filing situation.
Last updated: August 1, 2026
References:
- Form CT-1040 TCS Connecticut Tax Calculation Schedule. State of Connecticut, Connecticut Department of Revenue. Retrieved August 1, 2026.
- Calculators and Tables. State of Connecticut, Connecticut Department of Revenue. Retrieved August 1, 2026.
- Form CT-1040 Connecticut Resident Income Tax Return Instructions. State of Connecticut, Connecticut Department of Revenue. Retrieved August 1, 2026.
- Form CT-1040NR/PY Connecticut Nonresident and Part-Year Resident Income Tax Return Instructions. State of Connecticut, Connecticut Department of Revenue. Retrieved August 1, 2026.