To figure payroll taxes you need to get the tax rate. Many times the taxes are calculated using a table, this can be really complicated to do manually. My suggestion is purchasing an affordable software that will calculate the state tax withholding for you. I use Payroll Mate. I find it to be easy to use and affordable.  For further information about Georgia’s state tax withholding please visit  http://www.realtaxtools.com/payrollsoftware/Georgia-Payroll-Software.html