(1) If:
(a) you are a * GST instalment payer for an * instalment tax period; and
(b) subsection (2) applies to you;
section 162 - 70 has effect as if you are only required to pay * GST instalments for the last 2 * GST instalment quarters for the instalment tax period.
(2) This subsection applies to you if:
(a) both of the following conditions are satisfied:
(i) you are carrying on a * primary production business in an * income year corresponding to, or ending during, the * instalment tax period;
(ii) the * assessable income that was * derived from, or resulted from, a primary production business that you carried on in the * base year exceeded the amount of so much of your deductions in that year that are reasonably related to that income; or
(b) both of the following conditions are satisfied:
(i) you are a * special professional in an income year corresponding to, or ending during, the instalment tax period;
(ii) your * assessable professional income in the base year exceeded the amount of so much of your deductions in that year that are reasonably related to that income.