An hourly paycheck in Illinois is subject to a flat state income tax rate of 4.95%. That flat rate simplifies paycheck calculations compared to states with multi-tiered tax brackets.
If you work in Chicago, Cook County, or anywhere across downstate Illinois, converting your hourly wage into a clear annual or monthly take-home figure helps you budget effectively. Illinois combines urban commercial centers with agricultural and industrial regions, creating distinct regional wage variations.
This guide explains how Illinois paycheck math works, from minimum wage thresholds to tax deductions and overtime calculations.
Illinois Minimum Wage and Pay Benchmarks
Illinois has raised its statewide minimum wage steadily in recent years. In 2026, the state baseline minimum wage is $15.00 per hour. However, the City of Chicago sets higher local minimum wage requirements based on employer size.
| Region / Tier | Hourly Wage | Weekly Gross (40 hrs) | Annual Gross (52 wks) |
|---|---|---|---|
| Illinois Statewide Minimum | $15.00 / hr | $600.00 | $31,200 / yr |
| Chicago Minimum (Large Employers) | $16.20 / hr | $648.00 | $33,696 / yr |
| Experienced Skilled Trade | $28.00 / hr | $1,120.00 | $58,240 / yr |
| Illinois Average Hourly Wage | $34.20 / hr | $1,368.00 | $71,136 / yr |
Illinois Flat Tax Rate and Paycheck Deductions
One advantage of working in Illinois is tax predictability. The state taxes individual income at a flat 4.95%. Here is how deductions stack up on typical annual gross salaries for a single filer taking the standard deduction:
| Gross Annual Salary | Federal Tax | Illinois Tax (4.95%) | FICA (7.65%) | Net Annual Take-Home | Monthly Take-Home |
|---|---|---|---|---|---|
| $35,000 | $2,450 | $1,732 | $2,678 | $28,140 | $2,345 |
| $50,000 | $4,220 | $2,475 | $3,825 | $39,480 | $3,290 |
| $70,000 (Avg range) | $7,420 | $3,465 | $5,355 | $53,760 | $4,480 |
| $100,000 | $13,500 | $4,950 | $7,650 | $73,900 | $6,158 |
Overtime Calculations in Illinois
Illinois follows standard federal Fair Labor Standards Act (FLSA) overtime rules. Hours worked beyond 40 hours in a workweek must be paid at 1.5 times the employee's regular hourly rate.
For instance, if your base rate is $20.00 per hour and you work 48 hours in a week:
Working 8 overtime hours every week raises your effective annual earnings from $41,600 to $54,080, an extra $12,480 per year before taxes.
Practical Steps to Verify Your Illinois Paycheck
Check your pay stub to ensure state withholding matches the 4.95% rate after accounting for allowable personal exemptions. If you work in Chicago, confirm that local minimum wage rules apply if your employer operates within city limits.