For purposes of subsection (3)(b) of this section, the term "adjusted taxable income" means taxable income increased by the sum of: - The amount allowed for the taxable year under Section 27-7-95, subsection (2)(a) or (b), and
- The deduction allowed for such year.
For the purposes of the preceding sentence, any excess of the deductions allowed for the taxable year over the gross income for such year shall be taken into account as negative taxable income.