Connecticut: 3rd-Party Setup

Modified on Tue, 14 Oct at 6:28 PM

Enter Required Information

  • Log in to myconneCT

  • Locate your Sales & Use tax account on the Summary tab

  • Enter the listed Filing Frequency on the Return tile within your Sales & Use tax account tile on the Summary tab

  • One of the following validation methods is required:

    • Sales TAx Account ID: Enter the 10-digit “Account ID” listed on the Account tile (format: 1234567890)

      • Note: This is different than the 12-digit “CT Registration No”. Please be sure to provide the 10-digit Account ID. 

    • Recent Tax Payment:

      • From the home page in your myconneCT account, click the More… menu tab

      • Click Manage Payments & Returns

      • Select Sales & Use from the Accounts dropdown

      • Select Payments and Posted from the two Show dropdowns

      • Then copy the exact amount for the most recently submitted payment 

    • Letter ID: Provide a Letter ID from a physical letter you have received from Connecticut (format: L1234567890)

      • Letter IDs are located in the header of official correspondence from the Connecticut Department of Revenue. The ID begins with an "L" followed by a 10-digit number.

  • Effective Registration Date (Required for First Return Filing only)

    • Your effective registration date can be found in the mailed registration confirmation documents for your Sales & Use tax account.

      • Tip: it will fall within the period covered by our first return available in the myconneCT account. 

    • If you do not have a letter containing your Effective Registraton Date, you can message the Connecticut DRS online to request it.

      • From the home page in your myconneCT account, click the More… menu tab

      • Click Send a Message in the Correspondence section

      • Click your Sales & Use tax account

      • Click the first (oldest) return period

      • Click Other

      • Template Subject:  “Effective Date of Registration Confirmation”

      • Template Message: “Can you please confirm the effective registration date for this sales and use tax account?”

      • *Note: then regularly login to check for a response message.

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