Take-home pay in Illinois: federal, state and FICA explained
How federal income tax, Illinois state tax and FICA come out of each paycheck, with an example for a biweekly pay schedule.
Key facts
| Place | Illinois |
|---|---|
| Sales tax | State sales tax |
| Standard rate on file | 6.25% |
| Multiply net price by | 1.0625 |
| Tax share of a gross price | 5.88% |
| Currency | USD |
The three main deductions
Every paycheck in Illinois has federal income tax withholding and FICA (6.2% Social Security up to the wage base plus 1.45% Medicare). State income tax depends on the state; the calculator starts with 4.95% for Illinois as a planning estimate.
Worked example
Here is the calculation with sample figures. Change any number in the Illinois Paycheck Calculator to run your own.
| Gross annual salary | $150,000.00 |
| Pay periods per year | 26 |
| Federal rate (%) | 12% |
| State rate (%) | 4.95% |
| Gross amount | $5,769.23 |
|---|---|
| Federal tax | $692.31 |
| State tax | $285.58 |
| Social Security and Medicare | $441.35 |
| Net per paycheck | $4,350.00 |
Pre-tax deductions
401(k) contributions, health premiums and HSA contributions taken pre-tax reduce taxable wages, so your real withholding may be lower than this simple estimate.
Quick reference at 6.25%
Common amounts in Illinois, worked both ways: adding tax to a net price, and extracting it from a price that already includes tax.
| Amount | Tax on net amount | Gross (net + tax) | Net if amount includes tax |
|---|---|---|---|
| $10.00 | $0.62 | $10.62 | $9.41 |
| $50.00 | $3.12 | $53.12 | $47.06 |
| $100.00 | $6.25 | $106.25 | $94.12 |
| $250.00 | $15.62 | $265.62 | $235.29 |
| $500.00 | $31.25 | $531.25 | $470.59 |
| $1,000.00 | $62.50 | $1,062.50 | $941.18 |
| $5,000.00 | $312.50 | $5,312.50 | $4,705.88 |
How Illinois compares
Standard rates on file for other states. A difference of a few points matters most on high-value purchases and on cross-border sales.
| Place | Rate on file | Compared with 6.25% |
|---|---|---|
| Georgia | 4% | lower |
| Hawaii | 4% | lower |
| Idaho | 6% | lower |
| Indiana | 7% | higher |
| Iowa | 6% | lower |
| Kansas | 6.5% | higher |
Using the calculator step by step
- Open the Illinois Paycheck Calculator.
- Type your figures into the numbered lines. Results update as you type.
- Check the rate field. It starts at 6.25%; change it if a reduced rate, local surcharge or exemption applies to you.
- Read the result on the receipt panel, and use the formula shown under it if you need to explain the figure to a client or colleague.
Key terms
- Reduced rate
- A lower rate that applies to specific categories, often essentials such as food, medicine or books.
- Deduction
- An amount subtracted from taxable income. It saves tax equal to the deduction times your marginal rate.
- Gross amount
- The amount after tax is added, which is usually what a consumer pays.
- Marginal rate
- The rate applied to the next unit of income. It decides how much of a raise or a deduction you keep.
- Taxable income
- Income left after allowances and deductions, on which the tax rates are applied.
Common mistakes to avoid
- Using your top federal bracket as the withholding rate.
- Forgetting pre-tax deductions.
Run your own numbers. The Illinois Paycheck Calculator updates as you type and shows the formula it uses.
Frequently asked questions
How much tax comes out of a paycheck in Illinois?
Federal withholding, FICA of 7.65% and any state income tax. The calculator estimates each line.
Does Illinois have a state income tax?
The planning rate used here is 4.95%; check current Illinois rules for your income.
This article is general information for planning, not tax advice. Rates and rules change; confirm with your tax authority or a qualified adviser.