Final due date for 2013 income tax return to be completed and lodged with the Australian Taxation Office for taxpayers is the 31st October, 2013 if not registered with a Tax Agent. Contact A Grade Tax before the 31st October, 2013 to register as a client to quality for an extension of time to lodge after the 31st October, 2013 with A Grade Tax, a registered tax agent in Penrith 4731-1405.