Not later than June 1st of each year the bank shall prepare and file in the office of the Bureau of the Budget a budget of its operating expenses for the ensuing fiscal year. This budget:
1. Quarterly requirements. Shall be prepared on the basis of quarterly requirements so that it will be possible to determine from the budget the operating expenses for each quarter of the year;
2. General categories. Shall set forth the general categories of anticipated expenditures and the amount on account of each;
3. Reserves. Shall include provisions for reserve for contingencies and for overexpenditures; and
4. Others. May set forth any additional material that the bank determines.