Illinois Self-Employment Tax Calculator
Illinois has a flat 4.95% state income tax. On top of that, every freelancer, gig worker, and 1099 contractor owes 15.3% federal self-employment tax on net profit. Enter your expected Illinois net profit to see your full 2026 tax breakdown.
Take-home rate 76%
Take-home $56,852 Tax $18,148
Federal SE tax
Net earnings subject to SE tax (92.35%) $69,263
Social Security (12.4%) $8,589
Medicare (2.9%) $2,009
Total self-employment tax $10,597
Income tax
Half of SE tax deduction -$5,299
QBI deduction (20%) -$10,720
Federal income tax $4,898
Illinois income tax $2,653
Bottom line
Total estimated tax $18,148
Effective tax rate 24.2%
Estimated take-home pay $56,852
Running your business as an LLC in Illinois?
Illinois charges a $75 annual LLC fee. Annual report due before your formation anniversary month.
See the full Illinois LLC tax calculator →