DRS: Online filing Methods

TSC Online

IMPORTANT UPDATE: Filing and Payment Dates for Sales and Use Taxes


Currently, sales and use tax returns and payments are due the last day of the month following the end of the filing period.  Please be advised that additional guidance regarding any changes will be issued in November.  Continue to file your sales and use tax returns on or before the last day of the month until we establish the first filing period with the new due date.


Regarding mandatory e-filing for 1040ES as well as Annual Sales tax filing


“Recognizing the potential inconvenience for taxpayers at this time and limited benefit to the state, DRS has determined that (1) individuals will NOT be required to make estimated income tax payments electronically and (2) annual sales tax filers will NOT be required to file or make payments electronically. Taxpayers are still urged to take advantage of the ease, speed and certainty of filing and paying taxes through the DRS on-line Taxpayer Service Center (TSC) or by phone through Telefile.”

New to the TSC?

The TSC gives you the ability to:

  • file tax returns;
  • make payments;
  • view tax account information;
  • register a new business;
  • add additional taxes to an existing business;

TSC is easy, secure and FREE!

Login to TSC

Use the login buttons below to access the TSC platform you need.  Ex. A business owner would enter through the Business platform.  Bulk filers would use the Tax Preparer platform.

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TSC Resources

Never Registered?

If you are starting a new business in Connecticut and you do not have a CT Registration number, you can apply for one right now electronically through the TSC.

New Business Registrations

Already Registered!

If you have already obtained a CT Registration number, and this is your first time logging into the TSC, then follow the steps in your PIN Notification letter to create your online profile.