2026 Illinois paycheck guide
What this statewide profile models
State wage-tax treatment
The profile applies one configured statewide rate band after modeled adjustments. It does not infer local taxes or unsupported credits.
Employee payroll items
No employee payroll assessment is configured in this statewide profile. That is a model statement, not a claim that every employer or locality has no additional deduction.
401(k) treatment
Configured pretax 401(k) contributions reduce Illinois taxable wages in this model, subject to the calculator limit and profile boundaries.
Planning focus
Separate Illinois's statewide estimate from any local payroll items that the profile explicitly lists as unsupported.