(1) You may, by notifying the Commissioner in the * approved form:
(a) choose to apply a * simplified accounting method if you are a * retailer of the kind to whom the method is available; or
(aa) choose to apply a * simplified accounting method if you are a * small enterprise entity of the kind to whom the method is available; or
(b) revoke your choice under paragraph (a) or (aa).
(2) However, you:
(a) cannot revoke the choice within 12 months after the day on which you made the choice; and
(b) cannot make a further choice as a * retailer within 12 months after the day on which you revoked a previous choice as a retailer; and
(ba) cannot make a further choice as a * small enterprise entity within 12 months after the day on which you revoked a previous choice as a small enterprise entity; and
(c) cannot choose to apply a * simplified accounting method in addition to another simplified accounting method.
(3) Your choice to apply a * simplified accounting method has effect from the start of the tax period specified in your notice.
(4) Your choice to apply a * simplified accounting method ceases to have effect:
(a) if you made your choice as a * retailer and cease to be a retailer of the kind to whom the method is available--from the start of the tax period occurring after the day on which you cease to be such a retailer; or
(aa) if you made your choice as a * small enterprise entity and cease to be a small enterprise entity of the kind to whom the method is available--from the start of the tax period occurring after the day on which you cease to be such a small enterprise entity; or
(b) if you revoke your choice to apply the method--from the start of the tax period specified in your notice of revocation.