Here are some agency and other resources you can use to research payroll, tax, and business information in Illinois (IL). For other states, go to Payroll Resources.
| Information | Resource |
|---|---|
| Contact | |
| Agency Websites | |
| Small Business Information | |
| Forms |
REG 1: Illinois Business Registration Application (PDF) Illinois Business Gateway (Online business registration) UI-50A: Notice of Change (PDF) Form UI-1: Report to Determine Liability Under the Unemployment Insurance Act (PDF) |
| SUI Tax Rate Notice (Sample) |
Move your mouse over the image to see an example Illinois SUI rate notice, or click here to open in a separate window.
This is only an example — see your own notice for your specific rates. |
| Employee State Withholding Certificate | Form IL-W-4: Employee's Illinois Withholding Allowance Certificate |
| New Hire Reporting | Illinois New Hire Reporting |
| Workers' Compensation | Illinois Workers' Compensation |
Payroll resources: Tools, supplies, websites
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