(1) Australia Post's money may be expended only:
(a) in payment of amounts properly payable in the performance of its functions;
(b) in payment of remuneration and allowances payable under this Act; and
(c) in making any other payments that Australia Post is authorised or required to make by or under this or any other Act.
(2) Subsection (1) does not prevent investment, under section 59 of the Public Governance, Performance and Accountability Act 2013 , of money that is not immediately required for the purposes of Australia Post.