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NetWageTax

Tax year 2026. Federal, FICA, and state rules last checked . How we calculate

Illinois state income tax 2026

Illinois taxes wages at a single 4.95% rate after roughly $2,925 of income that goes untaxed. A single filer earning $65,000 owes an estimated $3,073 for 2026, an effective rate of 4.73%.

Last reviewed . Data: 2026 tax year (laws enacted through mid-2026).

Tax type
Flat tax
Rate
4.95% flat tax
Estimated tax on $65,000 (single filer)
$3,073
Local income taxes
None
Calculate your Illinois paycheckTips and overtime calculator

How Illinois taxes wages

Flat 4.95%, set by the Illinois Constitution, which requires a single rate.

At $65,000 of wages, that is the 40th-lowest estimated bill of the 42 jurisdictions (including DC) that tax wages.

Its 4.95% rate is the 13th-lowest of the 16 flat-tax states.

Example: $65,000 salary, single filer

State income tax on a $65,000 salary
Wages$65,000
Income not taxed (approx. deduction, exemptions)−$2,925
Income taxed$62,075
Flat rate× 4.95%
Estimated Illinois income tax$3,073

That works out to about $256 a month, or an effective rate of 4.73% of wages.

Calculators for Illinois

  • Paycheck calculator

    Take-home pay after federal income tax, Social Security, Medicare, and Illinois income tax, with Illinois selected.

  • Tips and overtime calculator

    Your federal deduction for qualified tips and overtime, with Illinois selected and its state rules applied to the Illinois estimate.

  • Senior deduction calculator

    A federal deduction of up to $6,000 for each person 65 or older, after the income phase-out.

  • Car loan interest calculator

    A federal deduction for interest on a loan for a new, U.S.-assembled vehicle.

Does Illinois tax tips and overtime?

Illinois does not follow the federal tips and overtime deduction. HB 1750 (tips and overtime) has been in the Rules Committee since January 2025, and the 2026 tax changes don’t mention either deduction.

Qualified tips and overtime you deduct on your federal return (Schedule 1-A) are still taxed by Illinois, and our estimate taxes your full wages.

Starts from federal AGI and no state deduction was enacted in 2026. Source: Illinois Department of Revenue: Bulletin FY 2027-01, July 2026. Checked . See how every state treats tips and overtime

To see your federal deduction and Illinois tax together, open the tips and overtime calculator with Illinois selected.

Illinois vs. neighboring states

Illinois has the highest estimated bill among its neighbors. Workers in Iowa, Indiana, Missouri, Kentucky, and Wisconsin would owe less on the same salary.

StateEst. tax on $65,000vs. Illinois
Iowa$1,858−$1,215
Indiana$1,888−$1,185
Missouri$2,152−$921
Kentucky$2,157−$915
Wisconsin$2,563−$509

Official source

For forms, exact brackets, and filing deadlines, go to the official Illinois tax agency website.

All states and DC on the map

Estimates cover Illinois income tax on wages for a single filer and exclude local taxes and state credits. They are not tax advice. See our disclaimer and how we calculate.