Overview
Connecticut employers who withhold state income tax from employee wages must file Form CT-941 with the Connecticut Department of Revenue Services (DRS) each quarter.
The TaxBandits API supports the automation of Form CT-941, Connecticut's quarterly withholding reconciliation.
Forms supported
| Form | Type | Filing frequency | Due date |
|---|---|---|---|
| Form CT-941 | WH | Quarterly | Last day of the month following the quarter end |
Key compliance notes
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Filed every quarter. Once registered, an employer must file Form CT-941 for every quarter until it files a final return indicating it has stopped paying wages.
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Annual filers. Certain qualifying employers may request permission to file a single Form CT-941 for the last quarter of the year only.
Before filing, you can simulate the entire verification flow in our Sandbox environment without submitting real data to state agencies. See how
Available endpoints
Each endpoint below is specific to Connecticut's withholding Form CT-941.
To use the following endpoints, you must first call the Auth method to obtain an access token. Include this token in your request header as a Bearer token. Refer to OAuth 2.0 Authentication for details on JWT-based authentication.
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Create — Generates a new Form CT-941 quarterly withholding return for the specified tax year and quarter.
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Update — Modifies the details of a previously created Form CT-941 return before it's transmitted.
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Get — Retrieves the details of a previously created Form CT-941 return.