Estimate your Illinois state income tax in minutes. Enter your annual income, filing status, personal exemptions, and property tax payments to see how the flat 4.95% rate, exemptions, and property tax credit affect your bill.
Enter your total Illinois taxable income (before state exemptions).
Standard personal exemption amount varies by filing status.
Each dependent qualifies for an additional Illinois exemption.
Illinois excludes qualifying retirement income. Enter any eligible amount.
Used to estimate the 5% Illinois property tax credit (up to $750).
Taxable Income After Exemptions
$0
Annual State Tax
$0
Monthly State Tax
$0
Estimates are for planning purposes only. Consult the Illinois Department of Revenue or a tax professional for official guidance.
Illinois uses a flat income tax rate of 4.95% across all filing statuses. Taxpayers can subtract personal exemptions for themselves, a spouse, and each dependent. Qualifying retirement income—such as Social Security, pensions, and IRAs—is generally exempt from Illinois income tax.
After these deductions, multiply your remaining taxable income by 4.95% to determine your state tax. Residents who pay property taxes on a primary residence may also qualify for a 5% credit, capped annually.
The Illinois property tax credit equals 5% of the property taxes you paid on your principal residence during the tax year.
To claim the full credit, you must be an Illinois resident and own and occupy the property. The maximum credit in recent years is $750.
Keep your property tax bill and proof of payment when filing to support your credit claim.
Illinois personal exemptions are indexed annually. For many tax years, the base exemption is around $2,425 per taxpayer and dependent, with additional exemptions for seniors or veterans.
Most qualified retirement income, including Social Security, pension payments, and IRA withdrawals, is excluded from Illinois taxable income.
Claim the credit on Schedule ICR with your Illinois tax return. Enter the amount of property tax paid and retain receipts for your records.
