Tables and Publications
| Name | Description | Revised Date |
| 2025 Withholding Tax Tables | 12/2024 | |
| Supplemental Table Married Couples Filing Jointly - Effective January 1, 2025 |
11/2024 | |
| IP 2025(1) | Connecticut Circular CT Employer's Tax Guide | 12/2024 |
| IP 2025(7) | Is My Connecticut Withholding Correct? | 12/2024 |
| IP 2025(8) | Connecticut Tax Guide for Payers of Nonpayroll Amounts | 12/2024 |
| TPG-211 | 2025 Withholding Calculation Rules | 11/2024 |
Withholding Forms
| Name | Description | Revised Date |
| CT-W4 | 2025 Employee's Withholding Certificate -FILLABLE | 12/2024 |
| CT-941 | 2025 Connecticut Quarterly Reconciliation of Withholding | 12/2024 |
| CT-941X | Amended Connecticut Reconciliation of Withholding | 12/2024 |
| CT-8109 | 2024 Connecticut Withholding Tax Payment Form for Nonpayroll Amounts | 12/2024 |
| CT-945 | 2024 Connecticut Annual Reconciliation of Withholding for Nonpayroll Amounts | 12/2024 |
| CT-W3 | 2024 Connecticut Annual Reconciliation of Withholding | 12/2024 |
| CT-1096 | 2024 Connecticut Annual Summary and Transmittal of Information Returns | 12/2024 |
| CT-W4P | 2025 Withholding Certificate for Pension or Annuity Payments | 12/2024 |
| CT-W4NA | 2025 Employees Withholding or Exemption Certificate-Nonresident Apportionment | 12/2024 |
| Schedule CT-1040WH | Connecticut Income Tax Withholding Supplemental Schedule |
Athletes & Entertainers
| Name | Description | Revised Date |
| CT-588 | Athlete or Entertainer Request for Reduced Withholding | 04/2023 |
| CT-590 | Athlete or Entertainer Request for Waiver of Withholding | 04/2023 |
| CT-592 | Athlete or Entertainer Withholding Tax Statement | 12/2017 |
| CT-945 ATHEN | 2024 Connecticut Annual Reconciliation of Withholding for Nonpayroll Amounts | 12/2024 |
| CT-1096 ATHEN | 2024 Connecticut Annual Summary and Transmittal of Information Returns | 12/2024 |
Household Employers
| Name | Description | Revised Date |
| CT-941 HHE | 2024 Connecticut Reconciliation of Withholding for Household Employers | 12/2024 |
| CT-W3 HHE | 2024 Connecticut Annual Reconciliation of Withholding for Household Employers | 12/2024 |
Information Returns
| Name | Description | Revised Date |
| CT-8508 | Request for Waiver from Filing Information Returns Electronically | 12/2023 |
| CT-6559 | Submitter Report for Form W-2 Compact Disc (CD) Filing | 12/2017 |
| CT-6559A | Continuation Sheet for Form CT-6559, Submitter Report for Form W-2 Compact Disc (CD) Filing | 10/2009 |
| CT-4804 | Transmittal of Information Returns Reported on Compact Disc (CD) | 09/2023 |
| CT-4802 | Transmittal of Information Returns Reported on Compact Disc (CD) Continuation | 09/2023 |
| CT-8109 | Connecticut Income Tax Withholding Payment Form for Nonpayroll Amounts | 12/2024 |
| CT-8809 | Request for Extension of Time to File Information Returns (For Forms W-2, W-2G, 1099-R, and 1099-MISC) | 12/2020 |
Links to Additional Information