IL · 2026 Tax Calculators
Illinois Tax Calculators
Illinois tax snapshot
- Tax structure
- Flat 4.95%
- Tax base
- State AGI
- Standard deduction
- $2,925 single
All Illinois calculators
Every tool shows combined federal + Illinois results. Rates verified 2026-06-22 from IL Dept. of Revenue — Income Tax Rates (4.95% flat rate).
Paycheck Calculator
Federal and Illinois state take-home pay by paycheck period.
Self Employment Tax Calculator
Federal SE tax plus Illinois state income tax on net profit.
1099 vs W2 Take-Home Pay
How much more a 1099 rate needs to beat a W2 offer in Illinois.
Freelance Take-Home Pay
Net income after all federal and Illinois taxes on self-employed earnings.
Freelance Hourly Rate
Target hourly rate to hit a take-home goal after Illinois taxes.
Quarterly Estimated Tax
Combined federal and Illinois quarterly estimated tax payment.
S-Corp vs LLC Tax Savings
Net annual savings from an S-Corp election in Illinois after state fees.
Compare IL to other states
Scope note: Excludes Illinois local taxes and the 1.5% Personal Property Replacement Tax (PPRT) that applies to S-Corps and partnerships at entity level. SDI is not applicable in Illinois. Age-related additional exemption ($1,000 per qualifying condition) is excluded.