Connecticut State Department of Revenue Services

Holiday Closure: The Department of Revenue Services will be closed on Wednesday, January 1st, a state holiday.

Upcoming CT DRS webinar: Select to register for the upcoming Withholding Forms W-2 and 1099 Annual Filing Webinar on Wednesday, January 15, 2025, at 10:00 a.m.

This information is not current and is being provided for reference purposes only

IP 2010(10)

Q & A on Estimated Corporation Business Tax and Worksheet CT-1120AE

This publication is available in pdf format

This publication has been superseded by IP 2011(21)