The fiscal year of each district shall commence April 1 and extend through the following March 31.
The board shall, within the first quarter of each fiscal year, adopt a combined annual budget and appropriation ordinance as provided in the Illinois Municipal Budget Law. In a district located entirely within a county with a population of less than 750,000 that is contiguous to a county with a population of more than 2,000,000, the district's combined annual budget and appropriation ordinance shall not be considered to be adopted until it is also adopted by resolution of the county board of the county in which the district is located.
Except as otherwise provided in this Act, a district may annually levy taxes upon all the taxable property therein at the value thereof, as equalized or assessed by the Department of Revenue, to be extended at not more than the rates and for the purposes specified hereinafter:
Except as provided in some other Act, a district may not levy annual taxes, for all its purposes in the aggregate, in excess of 0.1% of the value, as equalized or assessed by the Department of Revenue, of the taxable property therein.
After the adoption of the combined budget and appropriation ordinance and within the second quarter of each fiscal year, the board shall ascertain the total amount of the appropriations legally made which are to be provided for from tax levies for the current year. Then, by an ordinance specifying in detail the purposes for which such appropriations have been made and the amounts appropriated for such purposes, the board shall levy not to exceed the total amount so ascertained upon all the property subject to taxation within the district as the same is assessed and equalized for state and county purposes for the current year. A certified copy of such ordinance shall be filed on or before the first Tuesday in October with the clerk of each county wherein the district or any part thereof is located.
70 ILCS 410/13