(1) Except as provided in subsection (2), the percentage of net income to be paid under 15-31-101 is 6 3/4% of all net income for the tax period.
(2) For a taxpayer making a water's-edge election, the percentage of net income to be paid under 15-31-101 is 7% of all taxable net income for the tax period.
(3) Each corporation subject to taxation under this part shall pay a minimum tax of not less than $50.