(a) Superior Court. Income on deposited funds shall be ascertained as of June 30th and December 31st of each year. In calculating income there shall be deducted from the gross revenue the expenses incident to the audit and management of the funds and such further amount as the Chief Justice shall find proper to be set up as a reserve to meet losses, in order safely to protect the principal of the funds. The rate of interest to be paid on deposits shall be fixed by theChief Justice and shall be credited monthly and at the time of withdrawal. Interest shall be credited in the manner prescribed by the Chief Justice with the advice of the Investment Advisory Committee.
(b) Accounts in the Counties. Interest on deposits shall be paid out of interest earned in such manner and at such rate as the Assignment Judge shall determine.