“Vehicles purchased on or after March 1, 2013 and titled in this state will be exempt from sales and use tax and the annual ad valorem tax. Instead, these vehicles will be subject to a new, one-time title ad valorem tax that is based on the value of the vehicle.
In addition, if you purchase and title a vehicle in Georgia between January 1, 2012 and March 1, 2013, you may be eligible to opt-in to the new title ad valorem tax.”
From the Georgia Department of Revenue website that features a Title Ad Velorum Tax Calculator.
From what we understand this law is still being tweeked by the state legislature and some changes may be made. Contact your county tag office with additional questions!