The Department of Revenue shall (1) enforce the tax laws of the state;
(2) collect, account for, have custody of, invest, and manage all state funds and all revenues of the state except revenues incidental to a program of licensing and regulation carried on by another state department, funds managed and invested by the Alaska Retirement Management Board, and as otherwise provided by law;
(3) invest and manage the balance of the power development fund in accordance with AS 44.83.386;
(4) administer the surety bond program for licensure as a fish processor or primary fish buyer;
(5) provide reasonable assistance to the Alaska Industrial Development and Export Authority under AS 44.88.850(c).