Electronic Filing-Modernized e-File (MeF)
General Information - The Connecticut Department of Revenue, in conjunction with the Internal Revenue Service (IRS), accepts electronically filed business income tax and individual income tax returns as part of the IRS Modernized e-File (MeF) Program. MeF is a web-based system that allows electronic filing of tax returns through the Internet. MeF uses the widely accepted Extensible Markup Language (XML) format.
Electronic Filing Information for Taxpayer Service Center (TSC)