Apply for a Connecticut Tax ID (EIN) Number Online
To begin your application select the type of organization or entity you are attempting to obtain a Tax ID (EIN) Number in Connecticut for. After completing the application you will receive your Tax ID (EIN) Number via e-mail. If you are opening a business or other entity that will have employees, will operate as a Corporation or Partnership, is required to file any of these tax returns: employment, excise, or Alcohol, Tobacco and
Firearms or is a Trust, Estate or Non-profit organization you are required to obtain a Connecticut Tax ID (EIN).