New South Wales Consolidated Acts(cf Act No 34, 1949, s 11)
If, before the expiration of the registration of a motor vehicle, the
Authority cancels the registration on the application of the person in whose
name the vehicle is registered, the Authority may, in its discretion, grant to
the person a refund of the tax imposed in respect of the vehicle:
(a) calculated at the rate of one-twelfth of that tax applicable in respect of a yearly registration of the motor vehicle for each complete month in the portion of the period for which the vehicle was registered unexpired at the date on which the registration was cancelled, less any cancellation fee determined by the Authority, or
(b) calculated in such manner as may be prescribed by the regulations.