If you filed for a federal extension, you'll get an automatic six-month extension to file your Georgia return. You can request a 6-month state tax extension.A Georgia extension will move your filing deadline to October 15 (for calendar year filers). Extended Deadline with Georgia Tax Extension: Georgia offers a 6-month extension, which moves the filing deadline to October 15 (for calendar year filers). 1) Extensions of time for filing returns may be granted in cases of sickness, absence, or other disability or whenever reasonable cause exists. You'll receive an electronic acknowledgment once you.