In most cases if you are an employee, investor, or retiree your personal income tax return is due April 30.  Since this is a Saturday in 2011, there is a grace period until May 2 (the first business day after April 30).  However if you, or your spouse, has self-employment income in the year, your tax return is not due until June 15.  Although you can delay filing, the balance owing is still due April 30 (May 2) so be sure to pay an estimate of your tax bill by then. ...