Connecticut State Department of Revenue Services

Webinar Alert: DRS has rescheduled its Sales and Use Tax Webinar on Janitorial Services and Maintenance Services to Wednesday, September 3, 2025, at 10:00 a.m. To register for this event, simply click here!

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

IP 2015(17)

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This publication has been superseded by IP 2018(11)