TAXATION (INTEREST ON OVERPAYMENTS AND EARLY PAYMENTS) ACT 1983
(a) an assessment is made under the Superannuation Contributions Tax (Members of Constitutionally Protected Superannuation Funds) Assessment and Collection Act 1997 in respect of a person's liability to pay superannuation contributions surcharge; and
(b) the person has paid the assessed amount of the surcharge; and
(c) the assessment is amended (otherwise than under section 16 of that Act) reducing the liability of the person to pay surcharge;
interest is payable by the Commissioner to the person in accordance with this Part on the amount by which the surcharge payable by the person under the amended assessment is less than the surcharge that was paid by the person under the assessment that was amended.