Procedure
Georgia's state sales tax is currently 4% (groceries and prescription drugs exempted), with the counties allowed to add up to 2% more for SPLOST.
A SPLOST is passed by a county commission, usually with the agreement of its city councils, and voted up or down by residents in a referendum, usually during the next scheduled election. A SPLOST only lasts five years, and always begins and ends with a full calendar quarter. At that time, if the funds are still needed, it must be voted upon again. All expenditures of SPLOST funds must be in compliance with Article VIII, Section VI, Paragraph IV of the Georgia Constitution, and Official Code of Georgia Annotated (O.C.G.A.) Section 48-8-141. Each SPLOST must define the projects on which the money is to be used, hence the designation of a "special purpose" tax. If enough money is raised before the full term of the tax, it may be ended at the end of an earlier calendar quarter.
Counties and school systems are required to provide an independent accountants' report, examining the way the funds were allocated and attesting to the fact that the system receiving funds managed those funds appropriately. School taxes are not technically considered a SPLOST, but are essentially managed the same way, with referendum dates and lists of projects to be funded being approved by county (and if applicable, city) school boards instead of county commissions and city councils.
Read more about this topic: Special-purpose Local-option Sales Tax