Illinois Estimated Tax Facts
State Income Tax
Yes
Estimated Tax Form
Form IL-1040-ES
File When You Owe
$500+ in state tax
Self-Employment Tax Rate
15.3% (federal)
Illinois Quarterly Tax Calculator for Gig Drivers
Illinois has its own state income tax on top of federal self-employment tax. Get your exact quarterly estimated tax payment, effective rate, and recommended set-aside — free, in seconds.
Calculate Your Illinois Quarterly Payment
$0
Quarterly Payment
$0
Annual Tax
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Effective Rate
0%
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Illinois Specific Tax Notes
- Illinois has a flat 4.95% income tax rate
- Illinois does NOT have a standard deduction — instead uses a $2,425 personal exemption credit
- Estimated tax required if you expect to owe $500+ in state tax
- Illinois follows federal quarterly payment deadlines
- Last reviewed: April 2026 — verify current rates at tax.illinois.gov
Your Illinois Kit: Forms, Reminders, Checklists
Q2 estimated payment due June 15. Get your Illinois-specific forms, quarterly deadline reminders, mileage tracker, and a step-by-step action checklist.
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