Illinois W2 vs 1099 Calculator
Free Take-Home Pay Comparison — 2026
Illinois Tax Fact:
Illinois has a constitutionally mandated flat tax rate of 4.95%.
Illinois has a flat 4.95% income tax rate.
W2 vs 1099 Take-Home Calculator
All 50 states · Federal + State + SE Tax · 2026 tax brackets
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W2 vs 1099 in Illinois: What You Need to Know
Illinois applies a state income tax rate of up to 4.95% in addition to federal taxes. Illinois has a flat 4.95% income tax rate.
For W2 employees in Illinois, both federal and state income taxes are withheld automatically from your paycheck, along with your 7.65% share of FICA taxes. Your employer pays the other 7.65%.
As a 1099 contractor in Illinois, you pay both the employee and employer portions of FICA (15.3% total) plus 4.95% state income tax and federal income tax. However, you can deduct half of your SE tax and up to 20% of qualified business income (QBI deduction).
The break-even point — where 1099 pay equals W2 take-home — is typically 20-30% above equivalent W2 pay in Illinois when accounting for taxes and benefits.