(3) Interest payable on a nominated trust account is payable on the daily balance of that account (as that account stands at the close of business of each day or, where the bank is not open for business on any day, at the close of that day), and must be calculated monthly.
(4) Where the rate of interest required to be applied for the purposes of subsection (1) varies during any month, the rate of interest to be applied is to be the average rate of interest for that month (as determined in accordance with subsection (2)).
(5) In lieu of all banking charges and fees that would otherwise be payable to it in respect of any nominated trust account, a bank is entitled to retain for its own use 40% of all interest payable by it on a nominated trust account.