Georgia Code Title 47. Retirement and Pensions § 47-3-93

(a) Any member of this retirement system who has accrued at least 25 years of creditable service may obtain up to an additional three years of creditable service as provided in this Code section. In order to obtain such additional creditable service, the member must:

Such application and payment must be made in conjunction with and simultaneously with the member's application for retirement. If the application for retirement is withdrawn or denied, the application to purchase creditable service shall be void.

(b) Upon receipt of an application for additional creditable service, the board of trustees shall certify to the applicant the amount of the payment required by paragraph (2) of subsection (a) of this Code section.