Illinois Paycheck Calculator (2026)
Estimate your real take-home pay in Illinois for the 2026 tax year. Illinois has a flat 4.95% income tax, withheld on top of federal income tax, Social Security and Medicare. Enter your salary below — everything updates instantly.
State tax uses Illinois's 2026 single-filer schedule with the state standard deduction only. Local/city income taxes and credits are not included.
Illinois income tax in 2026
Illinois taxes wages at a flat 4.95%, with no standard deduction. A flat tax means every additional dollar you earn is taxed at the same state rate, whatever your income.
Worth knowing: Illinois uses a personal exemption (~$2,850) instead of a standard deduction. Chicago-area combined sales tax exceeds 10%.
Worked example: $65,000 in Illinois
A single filer earning $65,000 with no pre-tax deductions pays $5,620 in federal income tax, $4,030 in Social Security and $943 in Medicare, plus $3,218 in Illinois state income tax. That leaves $51,190 per year — about $4,266 a month, or $1,969 per biweekly paycheck — an effective all-in rate of 21.2%.
Frequently asked questions
Does Illinois have a state income tax?
Yes. Illinois has a flat 4.95% income tax for the 2026 tax year, withheld from wages in addition to federal tax and FICA.
How much is $65,000 after taxes in Illinois?
A single filer earning $65,000 in Illinois takes home roughly $51,190 per year in 2026 — about $4,266 per month or $1,969 per biweekly paycheck — after federal tax ($5,620), Social Security ($4,030), Medicare ($943) and Illinois state tax ($3,218).
How much is $100,000 after taxes in Illinois?
On a $100,000 salary, a single filer in Illinois keeps roughly $74,230 in 2026, an effective all-in tax rate of about 25.8%.
What taxes come out of every US paycheck?
Three federal deductions apply everywhere: federal income tax across the 2026 brackets, Social Security at 6.2% (on wages up to $184,500), and Medicare at 1.45% (plus 0.9% above $200,000). State income tax is added where the state levies one.
Last reviewed January 15, 2026 for the 2026 tax year. Rates change — always confirm against the official sources below before making financial decisions.
- Illinois Department of Revenue — official state tax authority
- Internal Revenue Service (IRS) — 2026 federal brackets, standard deduction and FICA
- Tax Foundation — state and average local sales tax comparisons