(1) Each governing body shall annually or biennially, as the case may be, prepare a proposed budget statement on forms prescribed and furnished by the auditor. The proposed budget statement shall be made available to the public by the political subdivision prior to publication of the notice of the hearing on the proposed budget statement pursuant to section 13-506. A proposed budget statement shall contain the following information, except as provided by state law:

(a) For the immediately preceding fiscal year or biennial period, the revenue from all sources, including motor vehicle taxes, other than revenue received from personal and real property taxation, allocated to the funds and separately stated as to each such source: The unencumbered cash balance at the beginning and end of the year or biennial period; the amount received by taxation of personal and real property; and the amount of actual expenditures;

(b) For the current fiscal year or biennial period, actual and estimated revenue from all sources, including motor vehicle taxes, allocated to the funds and separately stated as to each such source: The actual unencumbered cash balance available at the beginning of the year or biennial period; the amount received from personal and real property taxation; and the amount of actual and estimated expenditures, whichever is applicable. Such statement shall contain the cash reserve for each fiscal year or biennial period and shall note whether or not such reserve is encumbered. Such cash reserve projections shall be based upon the actual experience of prior years or biennial periods. The cash reserve shall not exceed fifty percent of the total budget adopted exclusive of capital outlay items;

(c) For the immediately ensuing fiscal year or biennial period, an estimate of revenue from all sources, including motor vehicle taxes, other than revenue to be received from taxation of personal and real property, separately stated as to each such source: The actual or estimated unencumbered cash balances, whichever is applicable, to be available at the beginning of the year or biennial period; the amounts proposed to be expended during the year or biennial period; and the amount of cash reserve, based on actual experience of prior years or biennial periods, which cash reserve shall not exceed fifty percent of the total budget adopted exclusive of capital outlay items;

(d) A statement setting out separately the amount sought to be raised from the levy of a tax on the taxable value of real property (i) for the purpose of paying the principal or interest on bonds issued or authorized to be issued by the governing body or the legal voters of the political subdivision and (ii) for all other purposes;

(e) A uniform summary of the proposed budget statement, including each proprietary function fund included in a separate proprietary budget statement prepared pursuant to the Municipal Proprietary Function Act, and a grand total of all funds maintained by the governing body;

(f) For municipalities, a list of the proprietary functions which are not included in the budget statement. Such proprietary functions shall have a separate budget statement which is approved by the city council or village board as provided in the Municipal Proprietary Function Act; and

(g) For school districts and educational service units, a separate identification and description of all current and future costs to the school district or educational service unit which are reasonably anticipated as a result of any contract, and any adopted amendments thereto, for superintendent services to be rendered to such school district or administrator services to be rendered to such educational service unit.

(2) The actual or estimated unencumbered cash balance required to be included in the budget statement by this section shall include deposits and investments of the political subdivision as well as any funds held by the county treasurer for the political subdivision and shall be accurately stated on the proposed budget statement.

(3) The political subdivision shall correct any material errors in the budget statement detected by the auditor or by other sources.