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With a heat wave approaching, Connecticut's Extreme Hot Weather Protocol will be activated from Thursday, June 11, until Sunday, June 14. Cooling centers are opening statewide. To find the nearest location, visit www.211ct.org or call 2-1-1. [READ THE UPDATE]

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Page 13 of 128 for tax table ×

Due Date for Certain State Tax Returns September 30 2020

First tax return filings due using myconneCT
SN 2011(6), Summary of Tax Provisions Contained in 2011 Conn. Pub. Acts 6
SN 2015(4), Sales and Use Taxes on Car Wash Services

Sales and Use Taxes on Car Wash Services
Controlling Interest/Insurance Premium/Healthcare Center Tax Forms

AU forms
SN 2011(12), 2011 Legislative Changes Affecting the Income Tax
Controlling Interest/Insurance Premium/Healthcare Center Tax Forms

AU forms
Controlling Interest/Insurance Premium/Healthcare Center Tax Forms

AU forms
Controlling Interest/Insurance Premium/Healthcare Center Tax Forms

AU forms
Other Helpful Information
SN 2015(8), 2015 Legislative Changes Affecting Cigarette Taxes

SN 2015(8), 2015 Legislative Changes Affecting Cigarette Taxes
2019 Controlling Interest/Insurance Premium/Healthcare Center Tax Forms

AU forms
IP 2006(18), Connecticut Tax Tips for Senior Citizens
Tax Information
Business Tax Return and Payment Due Dates
Tax Information

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