The University of Illinois revenue budget is derived from numerous sources including State of Illinois appropriations, student tuition and fees, sponsored research, gifts and endowments, auxiliary operations income (bookstore), and earnings from the UIC hospital and medical plans.
The operating budget is more than $3.65 billion (2006-07), including State of Illinois payments on behalf of (for employee benefits) and the academic facilities maintenance fund assessment.
A 2008 budget fact sheet summarizes the preliminary revenue budget (May 2007).