DRS: Business Tax Return and Payment Due Dates

 
Business Tax Return and Payment Due Dates

To avoid possible penalty and interest charges, ACH Debit taxpayers must initiate their transaction no later than midnight on, or before, the actual due dates below for the tax to be considered paid timely.
 
2018 DUE DATES
 

For Period Ending:

EFT Due Date:

December 31, 2017

Wednesday, January 31, 2018

January 31, 2018

Wednesday, February 28, 2018

February 28, 2018

Monday, April 2, 2018

March 31, 2018

Monday, April 30, 2018

April 30, 2018

Thursday, May 31, 2018

May 31, 2018

Monday, July 2, 2018

June 30, 2018

Tuesday, July 31, 2018

July 31, 2018

Friday, August 31, 2018

August 31, 2018

Monday, October 1, 2018

September 30, 2018

Wednesday, October 31, 2018

October 31, 2018

Friday, November 30, 2018

November 30, 2018

Monday, December 31, 2018

December 31, 2018

Thursday, January 31, 2019

 
 
All Other Filers...
 
 
When it's time to file, please File Online.  The Taxpayer Service Center (TSC) is a free, fast, easy, and secure way to conduct business with DRS.
 
Connecticut business taxpayers must electronically file and pay most Connecticut business tax returns using the Taxpayer Service Center (TSC-BUS).