If you are a legal resident of Georgia for only a portion of the tax year and are required to file a federal income tax return, you are required to file a Georgia Form 500 Individual Income Tax Return. You must complete Schedule 3 to determine your Georgia Taxable income. A full explanation of how to compute the tax for part-year residents is provided in the IT-511 Individual Income Tax Booklet.
Reference: https://dor.georgia.gov/filing-requirements
If you had no GA income, your tax should be zero, but you are still required to file. This is the rule, for part year residents, in most states
