COUNTY TAXES Ad valorem tax, more commonly known as property tax, is a large source of revenue for local governments in Georgia. The basis for ad valorem taxation is the fair market value of the property, which is established as of January 1 of each year. The tax is levied on the assessed value of the property which, by law, is established at 40% of fair market value. The amount of tax is determined by the tax rate (mill rate) levied by various entities (one mill is equal to $1.00 for each $1,000 of assessed value, or .001). The Putnam County Tax Commissioner’s Office is responsible for performing all functions relating to billing, collecting, disbursing and accounting for ad valorem taxes collected in Putnam County. The Tax Commissioner’s Office is located in the Putnam County Courthouse Building at 100 South Jefferson Avenue, Suite 207, Eatonton, Georgia. For more information call (706) 485-5441 or visit their website.