Illinois Payroll Guide (2026)

• State income tax on wages: Yes — state withholding generally applies
• Federal FIT & FICA: Still apply for most employees
• Pay stub generator: Preselect IL on Pay-Stubs.net

This guide summarizes common Illinois payroll topics employers and employees ask about: state income tax (if any), how stubs typically look, and where to verify official rules. Tax year context: 2026. Last reviewed: July 29, 2026.

Educational content only — not legal or tax advice. Confirm current rates and wage-statement rules with the agencies linked below.

Illinois generally requires state income-tax withholding on employee wages when thresholds and residency/work rules are met. Employers should use the state’s current withholding method and employee certificates (state W-4 equivalent where applicable).

Regardless of state income tax, most employees still have federal income-tax withholding (Form W-4 / Publication 15-T methods) and FICA (Social Security and Medicare) deducted. See our FICA guide and federal withholding guide.

Illinois employers should follow applicable wage-statement and payday rules from the state labor agency. Employees should expect clear gross pay, deductions, and net pay each period. Requirements for electronic delivery vary — check the labor department resources linked in Sources.

Illinois uses a state income-tax withholding framework administered by IDOR. Local taxes are less common than in some peer states, but always confirm for your locality and reciprocity situations for border employees.

Use the Illinois pay stub generator to preselect IL, load state fields where applicable, and preview federal and state amounts before download.

• IRS Publication 15
• IRS Publication 15-T
• Illinois Department of Revenue
• Illinois Department of Labor

Educational only — not tax or legal advice. Verify current rules on the agency sites above. Editorial standards · Methodology