The first phase of the prison reform movement, 1870 to 1900, began in the Midwest. Michigan led the way by establishing a prototype of the women's reformatory in the late 1860s.as a movement to reform the conditions under which women were incarcerated. This effort, which began about 1870, continues to influence women's prisons today.
Booklet IL-700-T (R-12/16) (Effective January 1, 2017) Page 5. Illinois Income Tax withholding at 3.75 percent (.0375) Based on allowances claimed on Form IL-W-4, Illinois Withholding Allowance Certificate.
Illinois' income tax rates were last changed two years prior to 2015 for tax year 2013, and the tax brackets have not been changed since at least 2001. Illinois has a flat income tax rate which applies to both single and joint filers.