The 8.3 percent rise last month in net tax revenue represents an increase of about $132 million in the year-to-year comparison.
In August, the state collected $1.35 billion in taxes, a 2 percent increase from the previous year.
Gov. Nathan Deal announced that year-to-date, net tax revenue collections totaled $4.48 billion for an increase of 5.8 percent, or $247.5 million, compared to the same time period in 2012.
Also in September, individual income tax collections increased 7 percent to $885.5 million and corporate income tax collections rose by 19.5 percent to $179.25 million.
The report indicated that gross sales tax decreased by 5.7 percent, or $48.5 million, while motor vehicle fees increased by $74.5 million as a result of the new tax law that replaced the birthday tax for car owners.