Connecticut State Department of Revenue Services

Webinar Alert: DRS has rescheduled its Sales and Use Tax Webinar on Janitorial Services and Maintenance Services to Wednesday, September 3, 2025, at 10:00 a.m. To register for this event, simply click here!

Modernized e-File (MeF)

General Information

The Connecticut Department of Revenue Services, 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)

Individuals
Businesses