Income Tax · IL
Illinois Income Tax & Paycheck Calculator
Illinois has a flat 4.95% state income tax for 2026. Estimate your Illinois take-home pay after federal and state taxes below — the state rate is prefilled.
2026 state income tax
4.95%
Type
flat
Traditional (pre-tax). Reduces income tax but not FICA.
Employer-plan premiums are typically pre-tax for both income tax and FICA.
Flat estimate. Nine states have no income tax — set 0. Progressive states vary; use your effective rate.
Take-home pay (biweekly)
$2,274.03
- Take-home pay (yearly)
- $59,125
- Federal income tax (yearly)
- $8,220
- Social Security & Medicare
- $6,319
- State tax estimate
- $3,836
- Pre-tax deductions (401k + health)
- $7,500
- Total tax rate (on gross)
- 21.62%
Paycheck breakdown
| Line item | Yearly | Per paycheck |
|---|---|---|
| Gross pay | $85,000 | $3,269.23 |
| 401(k) contribution | $5,100 | $196.15 |
| Health premiums | $2,400 | $92.31 |
| Federal income tax | $8,220 | $316.15 |
| Social Security | $5,121 | $196.97 |
| Medicare | $1,198 | $46.07 |
| State tax (est.) | $3,836 | $147.55 |
| Take-home pay | $59,125 | $2,274.03 |
How income tax works in Illinois
Illinois charges a single flat rate of 4.95% on taxable income — everyone pays the same percentage. Flat taxes are simple, but your actual bill still depends on your deductions and any local income taxes that may apply.
This page summarizes the state rate; brackets, standard deductions, exemptions, and credits vary and change, so the calculator uses a single rate as an estimate. For an exact figure, check the Illinois Department of Revenue.
Illinois income tax — FAQ
Does Illinois have a state income tax?
Yes. Illinois has a flat 4.95% state income tax for 2026. Rates, brackets, and deductions change, so confirm with the Illinois Department of Revenue.
What is the Illinois income tax rate?
Illinois applies a single flat rate of 4.95% to taxable income for 2026. Flat means everyone pays the same percentage regardless of income.
How much will I take home in Illinois?
It depends on your salary and deductions. The calculator on this page estimates your Illinois paycheck after federal income tax, Social Security and Medicare, and a flat income tax. Enter your salary to see per-paycheck and yearly take-home.
Income tax in other states
Open the full Take-Home Pay Calculator →
Disclaimer: DayCents provides this calculator for educational purposes only. Results are estimates based on your inputs and the stated assumptions — they are not financial advice, a quote, or an offer of credit. Consult a qualified financial professional before making major money decisions.