Stay informed about coronavirus (COVID-19): Connecticut residents are urged to continue taking precautions to prevent the spread of COVID-19. For the latest information and guidance, visit ct.gov/coronavirus.
Walk-in services at all DRS branch office locations remain suspended. Email DRS at email@example.com. Email the Priority One Taxpayer Assistance Program: DRSPriorityOne_CollectionsAssist@po.state.ct.us. Please check our
Frequently Asked Questions page.
IP 2018(1), Connecticut Circular CT Employer's Tax Guide
IP 2018(2), Building Contractors' Guide to Sales and Use Taxes
IP 2018(3), Exemptions From Admissions Tax
IP 2018(4), Pay-When-Paid Method for Materialmen
IP 2018(5), Getting Started in Business
IP 2018(6), Procedures to Request Disclosure of Tax Returns and Tax Return Information
IP 2018(7), Is My Connecticut Withholding Correct?
IP 2018(8), Connecticut Tax Guide for Payers of Nonpayroll Amounts
IP 2018(9), 2018 Q & A on Estimated Corporation Business Tax and Worksheet CT-1120AE
IP 2018(10), Successor Liability and Request for Tax Clearance
IP 2018(11), A Guide to Calculating Your Annualized Estimated Income Tax Installments and Worksheet CT-1040 AES
IP 2018(12.1), Forms 1099-R, 1099-MISC, 1099-K, and W-2G Electronic Filing Requirements for Tax Year 2018
IP 2018(13), Form W-2 Electronic Filing Requirements for Tax Year 2018
IP 2018(14), 2018 Federal/State Electronic Filing Handbook
IP 2018(15), Connecticut Income Tax Information for Armed Forces Personnel and Veterans
IP 2018(16), Estimated Connecticut Income Taxes
IP 2018(17), Status Letters
IP 2018(18), Connecticut Voluntary Disclosure Program
IP 2018(19), Farmer’s Guide to Sales and Use Taxes, Motor Vehicle Fuels Tax, Estimated Income Tax, and Withholding Tax
IP 2018(20), Q & A on Purchases of Vessels
IP 2018(21), State of Connecticut IFTA Manual