(d) The State Treasurer shall select depositories for disbursement accounts through competitive bidding by eligible banks in this state. If none of the eligible banks in this state are able to provide the needed services, then the State Treasurer may include eligible banks outside this state in the competitive bidding process. The State Treasurer shall propose rules for legislative approval in accordance with the provisions of article three, chapter twenty-nine-a of this code, prescribing the procedures and criteria for the bidding and selection. The State Treasurer shall, in the invitations for bids, specify the approximate amounts of deposits, the duration of contracts to be awarded and any other contractual terms the State Treasurer considers to be in the best interests of the state, consistent with obtaining the most efficient service at the lowest cost. The amount of money needed for current operation purposes of the state government, as determined by the State Treasurer, shall be maintained at all times in the State Treasury, in cash, in short term investments not to exceed five days or in disbursement accounts with financial institutions designated as depositories in accordance with the provisions of this section. No state officer or employee shall make or cause to be made any deposits of state funds in financial institutions which have not been designated as depositories.