(a) Not later than September 1 of each year, the head of each budget unit, other than the General Assembly and the judiciary, shall submit to the Office of Planning and Budget estimates of the financial requirements of the budget unit for the next fiscal year, on the forms and in the manner prescribed by the Office of Planning and Budget, with such explanatory data as is required by the Office of Planning and Budget. Such submission shall utilize such budget classes and be within such expenditure parameters as may be established by the Governor. The head of a budget unit also may submit such additional data as is helpful. The estimates so submitted shall bear the approval of the board or commission of each budget unit for which a board or commission is constituted.

(b) Except as otherwise provided in this subsection, the budget estimates for the General Assembly, including all the legislative agencies, shall be prepared by the Speaker of the House of Representatives and the President of the Senate and such other legislative officers as appropriate and shall be submitted to the director of the budget at the same time as other budget estimates are submitted. The Department of Audits and Accounts, for the purpose of this part, is a legislative agency and shall be construed in all respects as such; and the budget estimate for said department shall be prepared by the state auditor and shall be included in the budget report without revision and shall not be subject to review or control by the Office of Planning and Budget. The director of the Office of Treasury and Fiscal Services shall assist in the preparation of these budget estimates, if requested. Effective with the budget estimates for the fiscal year beginning July 1, 1985, the budget estimates for the Senate, the office of the Lieutenant Governor, and the office of the Secretary of the Senate shall be prepared by the Senate; the budget estimates for the House of Representatives, the office of the Speaker of the House of Representatives, and the office of the Clerk of the House of Representatives shall be prepared by the House of Representatives; and the budget estimates for the Office of Legislative Counsel, the Office of Legislative Fiscal Officer, and the Office of Legislative Budget Analyst shall be prepared by the Legislative Services Committee. All of such budget estimates shall include such object classes as the Legislative Services Committee shall determine, and transfers of funds may be made between such object classes. Funds may also be transferred between the Senate, the office of the Lieutenant Governor, and the office of the Secretary of the Senate. Funds may also be transferred between the House of Representatives, the office of the Speaker of the House of Representatives, and the office of the Clerk of the House of Representatives. Funds may also be transferred between the Office of Legislative Counsel, the Office of Legislative Fiscal Officer, and the Office of Legislative Budget Analyst.

(c) Budget estimates for the judiciary shall be prepared by the Chief Justice of the Supreme Court and the Chief Judge of the Court of Appeals and such other judicial officers as appropriate and shall be submitted to the director of the budget at the same time as other budget estimates are submitted. The director of the Office of Treasury and Fiscal Services shall assist in the preparation of these budget estimates, if requested.

(d) All of the data relative to the legislative and judicial branches of the government shall be for the information and guidance of the Office of Planning and Budget in estimating the total financial needs of the state for the ensuing period, but none of these estimates shall be subject to revision or review by the Office of Planning and Budget and must be included in the budget report as prepared by it.

(e) To effect the goal of decentralization, prior to September 1 of each year, the Office of Planning and Budget shall send all requests for new, expanded, relocated, or renovated rental real estate space to the Department of Administrative Services for an evaluation to determine conformity with Article 2 of Chapter 5 of Title 50, the "State Space Management Act of 1976." The Department of Administrative Services shall return such evaluation to the Office of Planning and Budget prior to the Governor's submission of the budget to the General Assembly as provided in Code Section 45-12-79.