Taxpayer Services Center (TSC-BUS)
File Returns, Make Payments, Update Information and More
Businesses that have a Connecticut Tax Registration Number (CT REG) can use the Taxpayer Service Center (TSC-BUS) to file, pay and view business tax transactions and to update the business's account information.
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Business Tax Help Page- Troubleshooting
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First-Time TSC Business User? (Click for help in setting up your account)
Ready to begin? Access the Login Page