The Ugly Reality of the Big Beautiful Bill: Impacts on the State of Illinois and the Path Forward
This report by the Center for Tax and Budget Accountability analyzes the "One Big Beautiful Bill Act" ("OBBBA"), the sweeping federal legislation signed into law by President Trump on July 4, 2025, which represents the most significant restructuring of federal tax and spending policy in decades. The OBBBA delivers trillions of dollars in permanent tax cuts weighted heavily toward wealthy individuals and corporations, financed in large part through deep reductions to Medicaid, the Supplemental Nutrition Assistance Program, clean energy investment, and federal education funding—programs that disproportionately serve low- and middle-income Americans. The report documents five decades of evidence demonstrating that supply-side tax policy has consistently failed to produce the economic growth its proponents promise while reliably increasing the national deficit and income inequality. For Illinois specifically, CTBA estimates that fully offsetting the OBBBA's combined fiscal impacts, including backfilling Medicaid and SNAP cuts so that Illinois residents continue receiving current services, would cost the state's General Fund approximately $45.4 billion over the next ten years, or an average of $4.54 billion annually. The report concludes by identifying the structural revenue reforms, including income tax reform, sales tax base expansion, and pension re-amortization, and near-term defensive actions that Illinois policymakers must pursue to navigate this historic fiscal challenge without devastating cuts to core public services.