What is the illinois state tax rate?

Illinois lottery winnings each time a single payment is over $1,000 for both Illinois residents and nonresidents, and; other gambling winnings paid to an Illinois resident; if the winnings are subject to federal income tax withholding requirements. read more

Tax Rate Database All taxes the Illinois Department of Revenue administers are below. Some tax rates are the same for all taxpayers (fixed rates) and some are determined by location (location-based). read more

The state of Illinois has a flat income tax, which means that everyone, regardless of income, is taxed at the same rate. That makes it relatively easy to predict the income tax you will have to pay. As of the July 1 2017, the income tax rate in Illinois was increased from 3.75% to 4.95%. read more