Connecticut Publishes Updated Business taxes Registration Application

The Connecticut Department of Revenue Services recently published an updated version of Form REG-1, Business Taxes Registration Application. This form is used to register businesses for tax-related purposes with the Department of Revenue Services, including income tax withholding.

There are a few changes to the form this year, which was last updated in 2012. These changes include:

  • Under Section 1, “Reason for Filing Form REG-1”, when changing organization type filers must now explain the reason for the change.
  • Under Section 4, “Major Business Activity”, filers must now include their North American Industry Classification System Code (NAICS code) to accompany their description of their major business activities.
  • Under Section 7, “Income Tax Withholding”, a new check box was added for businesses that maintain an office and intend to make payments of pensions, annuities, retirement distributions, or gambling winnings to CT residents.

To review this form in its entirety, please visit the Connecticut Department of Revenue Services by clicking here.


Paul Ogawa

Paul Ogawa is a Junior Regulatory Counsel at Sovos Compliance. As part of the Regulatory Analysis team, his main areas of focus are state and federal tax withholding, the Affordable Care Act (ACA), and Canadian tax information reporting. Prior to Sovos, Paul worked as a litigation attorney in Boston area law firms, representing clients in insurance subrogation claims, family law matters, and employment disputes. Paul is a member of the Massachusetts Bar, earned his B.A. from Brandeis University and his J.D. from the Suffolk University Law School.
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