Connecticut State Department of Revenue Services

HOLIDAY: The Department of Revenue Services will be closed on Thursday, June 19th, a state holiday.

WEBINAR: DRS will be holding a webinar on Wednesday, June 25, 2025, at 10:00 a.m.  This session will provide an overview of the sales and use tax requirements pertaining to Sales and Use Taxes: Selling at Antique Shows, Craft Shows, Fairs, Farmer’s Markets, or Flea Markets. Select here to register.

IP 2010(28)

A Guide to Calculating Your Annualized Estimated Income Tax Installments and Worksheet CT-1040 AES

This publication is available in pdf format

This publication has been superseded by IP 2011(23)