Connecticut Fax Filing Service Request is a way for businesses to file or submit documents to the Connecticut Department of Revenue Services (DRS) using a fax machine. This service allows documents such as income tax returns, payments, and other items to be sent via fax to the DRS for processing. There are three types of Connecticut Fax Filing Service Requests: individual, business, and extension. The individual request is for personal income tax returns, estimated payments, extensions, and other documents related to individual tax filings. The business request is for corporate income tax returns, estimated payments, extensions, and other documents related to business tax filings. The extension request is for filing an extension of time to file a tax return. All Connecticut Fax Filing Service Requests must include a completed DRS Form CT-1190-EZ.