NOTICE: Taxpayers are strongly encouraged to visit the DRS website for answers to many questions. You may also email DRS at If contacting DRS by phone, please plan for wait times that may be longer than usual. Frequently Asked Questions

Connecticut Non Filer Program


The mission of the Connecticut Department of Revenue Services (DRS) is to administer the tax laws of the state of Connecticut and collect the tax revenues in the most cost effective manner. An important part of meeting our mission is to ensure that individuals who are required to file a Connecticut income tax return, for any given tax year, have done so.

Through the sophisticated use of technology and data mining along with information provided by the Internal Revenue Service, the Department is able to identify nonfilers and reasonably estimate their income tax liability to Connecticut. This has been made possible by the use of the Department’s new data warehouse. The data warehouse and its ability to sift through tremendous amounts of data sources has given the DRS the tools to identify these nonfilers.

In our effort to contact taxpayers who are liable for the Connecticut income tax and did not file a return, inquiries are sometimes made to individuals who were not required to file a return. If you received a Failure to File Notice and you disagree with our findings, simply check off the appropriate box on the back of the notice and enclose the required documentation.

We have developed this webpage which includes the most frequently asked questions to better assist you. If you have any questions after reviewing this information, you may contact the Department of Revenue Services by telephone at 860-541-4222 Monday through Friday between the hours of 8:30 a.m. and 4:30 p.m.

Frequently Asked Questions about the Non Filer Program