DRS: TSC Business Help Page

TSC Business Help Page

Connecticut business taxpayers can electronically file most Connecticut business tax returns using the Taxpayer Service Center (TSC-BUS). The TSC is an interactive tool that provides a free, fast, easy, and secure way to conduct business with DRS.

Some of the features of the TSC include the ability to:

  • view current balances,
  • schedule payments with tax returns,
  • make bill payments, and
  • amend certain business tax returns. 
Using our FAQs, you can easily get answers to the most frequently asked questions and you can also exchange confidential information with DRS through a "secure" mailbox.
Download the TSC Electronic Filing Flyer and keep it beside your computer for additional help in using the TSC-BUS.  This flyer provides information about:
Get Started - Set up  your account in the TSC: 
Before you begin you will need to determine who the TSC administrator for your business will be.   The TSC Administrator has the ability to create other users to access the account and assign rights to these users.  This is important if your business would like more than one person to access the TSC in order to file, pay or view information.
  1. Now go to https://drsbustax.ct.gov/AUT/welcomebusiness.aspx 
  2. Add this address to your "favorites".
  3. Enter your CT Tax Registration Number (CT REG).  Remember, the last 3-digits of your CT REG is the location number.  If you file tax returns under different location numbers, you need to establish a profile for each one.
  4. Check the box to indicate that you are the TSC administrator for your business. If the TSC asks for a User ID and Password than there is already an Administrator profile established for this registration number. If an Administrator is already set up on the TSC and you need to find out who your contact is, you can phone DRS during regular business hours for assistance.  If you need to change the TSC administrator in the future, go to the instructions on Changing the TSC Administrator.
  5. Select and answer a shared secret, the press "next".  The shared secret is your pre-assigned PIN or, in some cases, you will be able to provide tax information from a previously filed return.  If you do not know your pre-assigned PIN and are not given the option (or you are not able) to provide tax information, you will have  to phone DRS during regular business hours to request a PIN.
  6. Create your profile.  Be sure to write down your User ID and Password.  You will need to enter these each time you login to the TSC-BUS
  7. Choose and answer 2 password hint questions. If you forget your password in the future, you will be able to get into the TSC by answering the questions.
  8. You're done with the login process!  Hit NEXT, and continue.  (From now on when you login, you will need your CT REG, your User ID and Password)

To Receive tax notifications by email, register for our e-alerts.

Ready to begin? Click "Continue" to go to the Login Page

{Continue to TSC}