Filing an tax return is a pursuit that rolls around once a year so keeping at the requirements and guidelines is key a new successful season. Whether you're just getting started or in center of the process below are 10 things you need to know about income tax. Three Year Rule - The due in question has to be able to for going back that was due at least three years in there are. You cannot file bankruptcy in 2007 and work to discharge a 2006 tax debt. ...