IL-W-4 Employee's Illinois Withholding Allowance Certificate If you have more than one job or your spouse works, your withholding usually will be more accurate if you claim all of your allowances on the Form IL-W-4 for the highest-paying job and claim zero on all of your other IL-W-4 forms.
Here's how to complete the form: Step 1: Provide Your Personal Information. Step 2: Specify Multiple Jobs or a Working Spouse. Multiple Jobs Worksheet. Step 3: Claim Dependents. Step 4: Make Additional Adjustments. Step 5: Sign and Date Your W-4.
If you need assistance in obtaining any of these forms, please call our Business Contact Center at 312.747. 4747 or for TTY 312.742. 1974.
The IL-W-4 form is fairly straightforward. The employee must enter their name, social security number, street address, city, state, and zip code. They must also indicate the number of allowances they want to claim or are legally allowed to claim.
Employers must file Form IL-941 to report Illinois income tax withheld each calendar quarter. This form applies only to Illinois income tax withholding and is due by the last day of the month following the calendar quarter.
Here's how to complete the form: Step 1: Provide Your Personal Information. Step 2: Specify Multiple Jobs or a Working Spouse. Multiple Jobs Worksheet. Step 3: Claim Dependents. Step 4: Make Additional Adjustments. Step 5: Sign and Date Your W-4.
Generally, you want about 90% of your estimated income taxes withheld and sent to the government.12 This ensures that you never fall behind on income taxes (something that can result in heavy penalties) and that you are not overtaxed throughout the year.