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Possible online services disruption due to Internet related outage

A worldwide technology outage is causing disruption to some State of Illinois online systems.  We are aware of this issue and are diligently working on restoration.

Income Tax Rates

Tax Types Current Tax Rates Prior Year Rates
Business Income Tax Effective July 1, 2017:
  • Corporations – 7 percent of net income
  • Trusts and estates – 4.95 percent of net income
BIT prior year rates
Individual Income Tax Effective July 1, 2017:
  • 4.95 percent of net income
IIT prior year rates
Personal Property Replacement Tax Corporations – (other than S corporations)
  • 2.5 percent of net income
Partnerships, trusts, and S corporations
  • 1.5 percent of net income
Withholding (payroll) Effective July 1, 2017, 4.95 percent of net income is required to be withheld from:
  • employee compensation based on the number of allowances claimed by the employee,
  • 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.