Connecticut State Department of Revenue Services

- CT filing, payment deadlines for individual income tax returns extended to May 17th. Read more.

- Please check our 2021 CT Tax Filing Season FAQ's

- Learn more about myconneCT

- Walk-in services at all DRS branch office locations remain suspended.

Sales and Use Tax Returns

Filers of Form OS-114BUT must now use Form OS-114

Name Description Revised Date Due Date
OS-114 Sales and Use Tax Return 09/2020 Varies
O-88 Instructions for OS-114 09/2020 N/A

Tax Chart 
Name  Description  Revised Date  Due Date 
OR-149 Sales and Use Tax Rate Chart 11/2019 N/A


Other Sales Tax Forms