Earnings
Regular pay$2,884.62
Overtime pay$0.00
Bonus pay$0.00
Gross pay$2,884.62
FINANCE
Illinois Paycheck Calculator
Estimate Illinois take-home pay for 2025 and 2026 with a clear gross-pay, tax, deduction, and net-pay breakdown for salary or hourly work.
2025 and 2026salary and hourlybonus and overtime401(k) and RothYTD FICA handlingsimple and advanced
Where Your Pay Goes
Paycheck Breakdown
Review the estimate in four parts: earnings, deductions, taxes, and taxable wages. This section explains why the net pay result changed.
Deductions
Traditional 401(k)$0.00
Roth contribution$0.00
HSA / FSA$0.00
Health insurance$0.00
Other pre-tax$0.00
Post-tax$0.00
Taxes
Federal withholding$367.77
Illinois withholding$142.79
Social Security$178.85
Medicare$41.83
Additional Medicare$0.00
Total taxes$731.24
Taxable Wages
Federal wages$2,884.62
Illinois wages$2,884.62
Social Security wages$2,884.62
Medicare wages$2,884.62
Bigger Picture
Annualized Comparison
Compare the current paycheck estimate against the same inputs annualized so salary, taxes, and take-home share are easier to interpret.
| Line item | Per paycheck | Annualized |
|---|---|---|
| Gross pay | $2,884.62 | $75,000.12 |
| Pre-tax deductions | $0.00 | $0.00 |
| Total taxes | $731.24 | $19,012.24 |
| Net pay | $2,153.38 | $55,987.88 |
| Take-home % | 74.7% | 74.7% |
Estimated Take-Home Pay
$2,153.38
74.7%of gross pay
Gross Pay
$2,884.62
Total Taxes
$731.24
Effective Tax Rate
25.3%
Current rates used
2026
- Federal withholding
- IRS Pub 15-T 2026
- Social Security
- 6.2% up to $184,500.00
- Medicare
- 1.5%
- Additional Medicare
- 0.9% over $200,000.00
- Illinois withholding
- 5.0%
- IL allowance
- $2,925.00 / $1,000.00 per exemption
Official IRS and state settings for the selected tax year.
Need a change for Illinois Paycheck Calculator?
About this calculator
Method, formulas, and limits.What this does
Calculates your exact Illinois take-home pay by factoring in the state's flat 4.95% income tax rate, federal withholding, FICA (Social Security & Medicare), and personal deductions. It processes the specific IL-W4 exemption allowances and handles pre-tax contributions like Illinois pension plans, 401(k)s, and health insurance to give you a precise net pay breakdown for 2025 and 2026.
Who it is for
Workers living or employed in Illinois who need a precise salary or hourly paycheck breakdown. It's especially useful for Chicago or Cook County residents trying to budget their monthly net income, employees comparing new job offers in Illinois, or hourly workers modeling how overtime pay and holiday bonuses impact their flat-rate state withholding.
How it works
The engine annualizes your gross income based on your pay frequency, then applies Illinois's flat 4.95% rate to your taxable wages after subtracting your IL-W4 exemptions. Federal taxes use the graduated IRS tables for 2025 or 2026. FICA is calculated with the correct wage base caps. Finally, all deductions are subtracted to produce your detailed pay stub estimate.
Limitations
Because Illinois uses a flat tax rate, state withholding is relatively predictable. However, this calculator does not model specific municipal taxes (though Chicago generally doesn't have a local income tax, some edge cases exist). Employer-specific benefit costs and YTD (Year-to-Date) accumulated wages might cause your actual pay stub to vary slightly by a few dollars.
Key calculations
- Gross Pay
- Calculate gross earnings for the period based on salary or hourly wages. grossPay = salary / payPeriods for salary workers, or (regularHours × rate) + (overtimeHours × rate × multiplier) for hourly workers.
- Illinois State Withholding
- Apply Illinois's flat 4.95% rate to annualized taxable wages after IL-W4 exemptions. ilWithholding = max(0, (annualizedWages − exemptionAllowance)) × 0.0495
- Federal Withholding
- Apply IRS percentage-method tables for the selected tax year based on filing status, pay frequency, and taxable wages after pre-tax deductions.
- Net Pay
- Subtract all taxes and deductions from gross pay. netPay = grossPay − federalWithholding − ilWithholding − socialSecurity − medicare − preTaxDeductions
Reference ranges
- Federal Withholding
- Federal income tax ranges from 10% to 37% of taxable wages depending on your income level and filing status.
- Illinois Flat Tax
- Illinois is one of the few states with a flat income tax rate, set at 4.95% on taxable wages after personal exemptions are applied.
- FICA Taxes
- Social Security is 6.2% up to the annual wage base ($176,100 for 2025). Medicare is 1.45% with no wage cap, plus an additional 0.9% above $200,000 ($250,000 married filing jointly).
How to use it
- 1.Choose Illinois Simple or Advanced ModeSimple mode quickly estimates an Illinois salary. Advanced mode is designed for hourly workers, allowing inputs for overtime rates, bonuses, and detailed pre-tax deductions.
- 2.Enter Gross WagesInput your annual salary or hourly rate. If hourly, specify your regular hours per pay period and any overtime.
- 3.Set Federal & IL-W4 DetailsSelect your federal filing status. Since Illinois uses a flat 4.95% rate, your federal status mainly drives IRS withholding, while your IL-W4 allowances drive state tax reductions.
- 4.Add Pre-Tax DeductionsEnter 401(k), HSA, or health insurance premiums. Traditional 401(k) contributions reduce both your federal and Illinois taxable income.
- 5.Select Tax YearPick 2025 or 2026 to ensure the correct federal brackets and Illinois tax rules are applied to your estimate.
- 6.Analyze the Pay StubReview the line-by-line breakdown of federal tax, Illinois state tax, Social Security, Medicare, and final take-home pay.
It uses year-based federal IRS withholding tables and Illinois flat-rate withholding for 2025 and 2026, plus standard FICA rules and common deduction assumptions. It is still an estimate because payroll providers may apply employer-specific plan settings, YTD wage history, benefit deduction timing, and local tax handling that this tool cannot see.
Yes, Illinois withholding uses a flat 4.95% rate on taxable wages after exemptions. However, the amount withheld from each paycheck can still vary based on the number of allowances claimed, any additional withholding you request, and changes to the taxable wage base throughout the year.
In advanced mode you can choose either a flat supplemental federal withholding method (22% flat rate) or an aggregate method that blends the bonus into regular wages. Illinois withholding and FICA still use the taxable wage base for the current pay period regardless of which federal method you select.
Yes for hourly workers. You can enter regular hours, overtime hours, and an overtime pay multiplier (typically 1.5x). In this v1 release, salary mode does not model overtime and treats salary as a fixed annual amount spread evenly across the selected pay frequency.
Year-to-date Social Security wages determine whether the Social Security wage base cap ($176,100 for 2025) has already been reached, at which point Social Security withholding stops for the year. YTD Medicare wages help determine whether the Additional Medicare surtax (0.9%) should apply in the current paycheck based on cumulative earnings above the threshold.
Traditional 401(k) contributions reduce both federal and Illinois taxable wages but not FICA in this model. Roth contributions are post-tax and do not reduce current taxable wages. HSA, FSA, and health insurance default to common pre-tax treatment, and advanced mode lets you adjust their tax-base behavior individually when needed.
Illinois allows a standard exemption amount per allowance claimed on your IL W-4. The exemption reduces your taxable wages before the flat 4.95% rate is applied. If you claim zero exemptions, the full amount of your wages is subject to Illinois withholding at the flat rate.
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