Connecticut State Department of Revenue Services

NEW Highway Use Fee - Registration is now open for certain carriers to register for the new Connecticut Highway Use Fee - Click here for more information.

IMPORTANT INFORMATION - the following tax types are now available in myconneCT: Individual Income Tax, Attorney Occupational Tax, Unified Gift and Estate Tax, Controlling Interest Transfer Tax, and Alcoholic Beverage Tax. - Click here for the latest information.

Tax Guides for Businesses

  1. IP 2018(5), Getting Started in Business
  2. For up-to-date new business information visit New Business Information Site
  3. Status Letters
  4. IP 2009(13), Sales and Use Taxes Guide for Manufacturers, Fabricators, and Processors
  5. IP 2018(2), Building Contractors' Guide to Sales and Use Taxes
  6. Online Guide to Connecticut Business Tax Credits
  7. DRS-045, Can I Be Held Personally Liable For Payment of Business-Related Taxes?