Cook County receives revenue from multiple sources like property taxes, fines, fees and even the auctioning of surplus equipment. The total amount of money collected each year is what is used to cover the costs of County services.
It is the County's fiscal policy to provice a balanced budget each year. Expenditures are County costs ranging from payroll to paperclips. Like a balanced checkbook, the total expenditures match the total revenue collected in a fiscal year.