Tax Practitioners

Highway Use Fee - Registration is now open for certain carriers to register for the new Connecticut Highway Use Fee - Click here for more information.

IMPORTANT INFORMATION - the following tax types are now available in myconneCT: Individual Income Tax, Attorney Occupational Tax, Unified Gift and Estate Tax, Controlling Interest Transfer Tax, and Alcoholic Beverage Tax. - Click here for the latest information.

Tax Practitioners Information

Electronic Filing

File 50 or more Income tax returns?

File/Pay Income Tax Returnsusing TSC-IND

File Multiple Returns for Clients using TSC-TPBF
File/Register Business using TSC-BUS

File Sales Tax Returns using 3rd Party Software
FSET - Fed/State Employment Taxes Filing Program
Electronic Filing Information for the Tax Professional
Sign Up For E-Alerts

Tax Compliance Programs

Abusive Tax Shelters
Voluntary Disclosure Program
Connecticut Managed Compliance Program
Direct Payment Permit
Offers of Compromise
Nexus
Financial Institution Reporting Requirements

Software & Payroll Companies

Information for Software Developers
Software Developers Registration
Payroll Companies Registration

Additional Information

Your Rights as a CT Taxpayer
How to request copies of returns

LGL-002

Power of Attorney Forms

LGL-001- Power of Attorney
LGL-003 - Limited Power of Attorney

How to request a Ruling

LGL-006

Filing an Appeal with DRS

Tax Specific Issues

Composite Tax Requirements for Partnerships
Composite Tax Requirements for S Corps
CT-IFTA
Withholding rules for Wages
Withholding rules for Nonpayroll
Withholding rules for Athletes & Entertainers

Electronic Filing	File 50 or more Income tax returns? File/Pay Income Tax Returnsusing TSC-IND File Multiple Returns for Clients using TSC-TPBF File/Register Business using TSC-BUS File Sales Tax Returns using 3rd Party Software FSET - Fed/State Employment Taxes Filing Program Electronic Filing Information for the Tax Professional Sign Up For E-Alerts
Tax Compliance Programs	Abusive Tax Shelters Voluntary Disclosure Program Connecticut Managed Compliance Program Direct Payment Permit Offers of Compromise Nexus Financial Institution Reporting Requirements
Software & Payroll Companies	Information for Software Developers Software Developers Registration Payroll Companies Registration
Additional Information	Your Rights as a CT Taxpayer How to request copies of returns LGL-002 Power of Attorney Forms LGL-001- Power of Attorney LGL-003 - Limited Power of Attorney How to request a Ruling LGL-006 Filing an Appeal with DRS
Tax Specific Issues	Composite Tax Requirements for Partnerships Composite Tax Requirements for S Corps CT-IFTA Withholding rules for Wages Withholding rules for Nonpayroll Withholding rules for Athletes & Entertainers

Connecticut State Department of Revenue Services