Income Tax Filing Due Date
Washington DC will celebrate Emancipation Day on Friday, April 15, 2011. As a result, any federal return otherwise due on April 15 that is filed (mailed or transmitted) on Monday, April 18, 2011, will be considered timely filed. Connecticut will conform to the federal extended due date. Therefore, Connecticut income tax returns and payments normally due on April 15 will be treated as timely filed if they are filed on April 18, 2011.