2021 Informational Publications
IP 2021(1), Connecticut Circular CT Employer's Withholding Guide
IP 2021(4), Commercial Fisherman’s Guide to Sales and Use Taxes and Estimated Income Tax
IP 2021(5), Filing and Paying Connecticut Taxes Electronically
IP 2021(7), Is My Connecticut Withholding Correct?
IP 2021(8), Connecticut Tax Guide For Payers of Nonpayroll Amounts
IP 2021(9), 2021 Q & A on Estimated Corporation Business Tax and Worksheet CT-1120AE
IP 2021(10), Q & A on Purchases of Vessels
IP 2021(13), Form W-2 Electronic Filing Requirements for Tax Year 2020
IP 2021(14), 2021 Taxable Federal/State Electronic Filing Handbook
IP 2021(16), Form W-2 Electronic Filing Requirements for Tax Year 2021