Synopsis As Introduced Amends the Illinois Income Tax Act. Reduces the corporate income tax rate to (i) 6% for taxable years beginning on or after January 1, 2013 and ending prior to January 1, 2014 and (ii) 4.8% for taxable years beginning on or after January 1, 2014. Requires the Department of Revenue to monitor each month the seasonally-adjusted unemployment rate reported by the United States Department of Labor, Bureau of Labor Statistics, for the previous calendar month. Provides that, if the Department finds that (i) the average unemployment rate for the previous calendar month exceeds the average unemployment rate for any of the 3 calendar months immediately preceding the previous calendar month by more than 0.3% and (ii) the unemployment rate during the previous calendar month was 5.05% or higher, then the Department shall, by rule, decrease the rate of tax imposed on corporations by 0.25% for each 0.3% increase in the unemployment rate. Effective immediately.