Connecticut State Department of Revenue Services

Holiday message- The Department of Revenue Services will be closed on Monday, October 9, 2023, a state holiday.

Tax Guides for Businesses

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