When a taxpayer is not liable for Georgia income taxes for an entire year because of moving into this State or moving from this State, he shall include in his return only his income received while a resident of this State. Deductions of a personal nature such as contributions to charitable organizations, alimony, medical expenses, or the optional standard deduction and personal exemption and credits for dependents shall be allowed in the ratio that the adjusted gross income of the taxpayer while residing in Georgia bears to the total adjusted gross income of the taxpayer for the entire year. As used herein, gross income means total income less business expenses incurred in the production of such income.
Ga. Comp. R. & Regs. R. 560-7-8-.27
Ga. Code Ann. Secs. 92-3005, 92-3006, 92-8405, 92-8406, 92-8409, 92-8427.