DRS: Online filing Methods

TSC Online

IMPORTANT UPDATE: SALES TAX FILING DEADLINE CHANGED. Click on the link for details.

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.

I am a(n):

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.