(1) You may, by notifying the Commissioner in the * approved form, substitute another amount for:
(a) your * notified instalment amount for a * GST instalment quarter; or
(b) if paragraph 162 - 130(3)(b) applies to a GST instalment quarter--your * GST instalment for the preceding GST instalment quarter.
The amount substituted is your varied instalment amount for the GST instalment quarter.
(2) The amount substituted must not be less than zero.
(3) You must give the notice to the Commissioner on or before the day on which the * GST instalment for the * GST instalment quarter is due.
(4) You must include in the notice an estimate of your * annual GST liability relating to the * instalment tax period in question. This estimate is your estimated annual GST amount relating to the * GST instalment quarter.
Note 1: You may be liable to penalty under Subdivision 162 - D if your variation of the notified instalment amount is too much of an underestimate of your total GST liability.
Note 2: Your estimated annual GST amount is taken to be zero if it would otherwise be less than zero (see subsection (6)).
(5) However, if paragraph 162 - 130(3)(b) applies to a * GST instalment quarter but you do not, under subsection (1) of this section, substitute another amount by notifying the Commissioner in the * approved form:
(a) your varied instalment amount for the GST instalment quarter is 25% of your * estimated annual GST amount relating to the preceding GST instalment quarter; and
(b) your estimated annual GST amount relating to the GST instalment quarter is your * estimated annual GST amount relating to the preceding GST instalment quarter.
(6) Your estimated annual GST amount relating to the * GST instalment quarter is zero if, apart from this subsection, this estimate would be less than zero.