Clause 46

Whenever any person, public officer, public department or statutory authority is required to do anything for which a fee is to be paid or a charge made under any written law, such person, public officer, public department or statutory authority may decline to do that thing until the fee is paid or payment be made and, where the precise amount of the payment to be made cannot be ascertained until the thing is done, until there be paid such an amount as may be estimated to be the correct amount by the person, public officer, public department or statutory authority required to do that thing.

Whenever a thing has been done for which an estimated amount shall have been paid, such amount shall be adjusted to the correct amount either by means of a further payment or by a refund of the amount overpaid.