Illinois paycheck calculator for the 2026 tax year. Illinois withholds a flat 4.95% state income tax after a $2,925 personal exemption. This calculator shows the full 2026 split: federal, FICA and Illinois state tax, per paycheck. Enter your gross pay and pay frequency to see federal tax, Social Security, Medicare and Illinois state tax per check.
| Input | Result |
|---|---|
| $1,500 biweekly gross | $1,220.41 take home per check |
| $3,000 biweekly gross | $2,307.18 take home per check |
| $6,000 biweekly gross | $4,242.88 take home per check |
| Taxable income (single) | Rate |
|---|---|
| over $0 | 4.95% |
The tool annualises your pay (gross per period × periods per year), subtracts any pre-tax deductions, then subtracts the 2026 federal standard deduction of $16,100 for single filers ($32,200 joint, $24,150 head of household) and runs the remainder through the seven federal brackets. Social Security is 6.2% on the first $184,500 of 2026 wages; Medicare is 1.45% with an extra 0.9% above $200,000 for single filers. State taxable income is your annual pay minus pre-tax deductions, minus the Illinois standard deduction of $0 and the $2,925 personal exemption, taxed at the Illinois rates below.
Illinois uses a flat 4.95% in 2026 after a $2,925 personal exemption. These are the 2026 figures from the Tax Foundation's annual survey of state rates and brackets.
Illinois applies a flat 4.95% to state taxable income after a $2,925 personal exemption. On a $75,000 gross salary, a single filer pays about $3,568 of Illinois state income tax for the year.
A single filer paid biweekly with no pre-tax deductions takes home about $2,231.72 per check on $75,000, federal, FICA and Illinois state tax combined.
In most states a pre-tax 401(k) or health premium reduces the income subject to state tax as well as federal, but not FICA, Social Security and Medicare are still withheld on the full amount. Enter your per-check pre-tax deduction above to see both effects.