Illinois personal income growth 2nd lowest in U.S. since Great Recession By Bryce Hill 01/09/2020 Only Mississippi has fared worse than Illinois in personal income growth since the Great Recession hit at the end of 2007. Analysis shows state income taxes matter. TAGS: corporate income tax, flat tax, graduated income tax, Great Recession, ILGA: Illinois General Assembly, Illinois, income, income growth, income tax, JB Pritzker, labor, marginal tax, personal income, population, progressive income tax, recession, Springfield, tax burden