O.C.G.A. § 48-7-28.1 (2019)

(a) If a taxpayer repays in the current tax year certain amounts of income that were subject to tax under this chapter in a prior year and a tax benefit would be allowed under similar circumstances under Section 1341 of the Internal Revenue Code, a tax benefit shall be allowed on the Georgia income tax return. The tax benefit shall be the reduced tax for the current tax year due to the deduction for the repaid income or the reduction in tax for the prior year or years due to the exclusion of the repaid income. The reduction in tax shall qualify as a refundable tax credit on the return for the current year.

(b) No credit will be allowed unless Georgia income tax was actually paid in the prior year or if the taxpayer was not subject to Georgia income tax.