COVID-19 Updates: Get the latest information on COVID-19 in Connecticut at ct.gov/coronavirus.
Vaccine Appointments: Find a COVID-19 vaccination clinic near you and learn how to schedule an appointment at ct.gov/covidvaccine.
- 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.
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IP 2006(9), International Fuel Tax Agreement Manual
IP 2006(19), Guide to Calculating Annualized Estimated Corporation Business Tax Installments and Worksheet CT-1120AE
IP 2006(35), Building Contractors Guide to Sales and Use Taxes
IP 2006(29), Licensed Non-Stamping Distributor's Guide to Connecticut Cigarette Tax Laws and Other Cigarette-Related Laws
IP 2006(24), Estimated Connecticut Income Taxes
IP 2006(17), Personal Taxes
IP 2006(28), Licensed Stamping Distributor's Guide to Connecticut Cigarette Tax Laws and Other Cigarette-Related Laws
IP 2006(15), Guide to Connecticut Business Tax Credits
IP 2006(25), A Guide to Calculating Your Annualized Estimated Income Tax Installments and Worksheet CT-1040 AES
IP 2006(7), Is My Connecticut Withholding Correct?
IP 2006(26), Licensed Cigarette Dealer's Guide to Connecticut Cigarette Tax Laws and Other Cigarette-Related Laws
IP 2006(14), Federal/State Electronic Filing Handbook
IP 2006(21), Q & A on the Business Entity Tax
IP 2006(27), Guide to Connecticut Cigarette Tax Laws and Other Cigarette-Related Laws for Persons Operating and Servicing Fewer Than 25 Cigarette Vending Machines
IP 2006(18), Connecticut Tax Tips for Senior Citizens