Revenue

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• File, Pay, and View Business Account Transactions

  Businesses that have a Connecticut Tax Registration Number (CT REG) can use the Taxpayer Service Center ( TSC-BUS ) to file, pay, view tax transactions, and update the business's account information. 

  Agency: Department of Revenue Services

• Sales Tax Information

  Provides business owners information about registering a business, sales and use taxes, exemption certificates, filing and amending sales tax returns, renewing a sales tax permit and closing a business.

  Agency: Department of Revenue Services

• Business Taxes

  A brief description of taxes generally applicable to companies doing business in Connecticut. It is not an all-inclusive list, but contains those taxes of interest to most businesses and, where appropriate, identifies state agencies to contact for additional information.

  Agency: Department of Revenue Services

• Corporation Business Tax Information

  Detailed information on registration and filing requirements for the corporation business tax.

  Agency: Department of Revenue Services

• CT Income Tax: Where’s My Refund

  Citizens can check the status of an income tax refund online through the Taxpayer Service Center or by using the telephone automated refund system.

  Agency: Department of Revenue Services

• Unemployment Insurance Tax Information

  Connecticut employers can file unemployment taxes, get necessary forms, and understand benefit payment procedures here.

  Agency: Department of Labor

• IT Capital Investment Program - Project Status Reports

  Each agency receiving funds through the Information Technology Capital Investment Program must report semi-annually to the Information Technology Strategy and Investment Committee and OPM, IT Policy Director. The reports on this page are separated by those projects already completed (closed out) and projects still underway (Active).