Connecticut State Department of Revenue Services

Upcoming CT DRS webinar: Select to register for the upcoming Withholding Forms W-2 and 1099 Annual Filing Webinar on Wednesday, January 15, 2025, at 10:00 a.m.

2015 Informational Publications

IP 2015(1), Connecticut Circular CT Employer's Tax Guide
IP 2015(1.1), Connecticut Circular CT Employer's Tax Guide
IP 2015(7.1) Is My Connecticut Withholding Correct
IP 2015(8) Connecticut Tax Guide for Payers of Nonpayroll Amounts
IP 2015(8.1) Connecticut Tax Guide for Payers of Nonpayroll Amounts
IP 2015(9), Form W-2 Electronic Filing Requirements for Tax Year 2015
IP 2015(10), Forms 1099-R, 1099-MISC and W-2G Electronic Filing Requirements for Tax Year 2015
IP 2015(11) Q&A on the Business Entity Tax
IP 2015(12), Getting Started in Business
IP 2015(13) The Connecticut Neighborhood Assistance Tax Credit Program
IP 2015(14) Q & A on Estimated Corporation Business Tax and Worksheet CT-1120AE
IP 2015(16), Q & A on the Connecticut Use Tax for Businesses and Professions
IP 2015(17) A Guide to Calculating Your Annualized Estimated Income Tax Installments and Worksheet CT-1040 AES
IP 2015(19), Federal/State Electronic Handbook
IP 2015(20), Connecticut Earned Income Tax Credit Recordkeeping Requirements for Self-employed Persons
IP 2015(20) (SP), Credito Tributario por Ingreso del Trabajo de Connecticut Requisitos de Mantenimiento de Registros Para Trabajadores por Cuenta Propia
IP 2015(21), Q & A on the Connecticut Individual Use Tax
IP 2015(22), Annual One-Week Sales and Use Tax Exclusion for Clothing and Footwear Costing Less Than $100
IP 2015(23), Connecticut Income Tax Treatment of State Lottery Winnings Received by Residents and Nonresidents of Connecticut
IP 2015(24), Connecticut Income Tax Information for Armed Forces Personnel and Veterans