Georgia Code Title 10. Commerce and Trade § 10-4-217

(a) Pursuant to the terms of a rental agreement, an owner may charge and collect a fee from an occupant for the late payment of rent that is to be paid under a rental agreement. Such fee shall be no more than $20.00 per month for each month there is a late payment of rent or 20 percent of the monthly rent for each month there is a late payment of rent, whichever is greater.

(b) This Code section shall only apply to rental agreements entered into, extended, or renewed, and the late payment of rent occurring, on or after July 1, 2019.