Schedule IL-WIT: Illinois Income Tax Withheld (2025)
Illinois · Illinois DOR · Used for tax years 2025
Schedule IL-WIT reports Illinois income tax withheld from your income and your spouse’s income, using records such as W-2 and 1099 forms. It lists payer information, federal and Illinois income amounts, and withholding, and totals the withholding for Form IL-1040, Line 25.
Who files this form
Schedule IL-WIT reports Illinois income tax withheld and is attached to Form IL-1040. Include all W-2 and 1099 forms that show Illinois withholding.
Use Step 1 for your withholding records and Step 2 for your spouse’s withholding records. If attaching the schedule to an amended Form IL-1040-X, check the box at the top.
What you'll need
- All W-2 and 1099 forms that show Illinois withholding.
- Your spouse’s withholding forms for entries in Step 2.
- Your name and Social Security number, and your spouse’s if completing Step 2. Enter names as shown on Form IL-1040.
- For each withholding record: the form type, employer or payer identification number, federal income amount, Illinois income amount, and Illinois income tax withheld.
The schedule’s form-type chart also includes Form 1042-S.
How to file
- Enter your withholding records in Step 1 and your spouse’s records in Step 2.
- Use the form-type chart to choose the letter code for Column A. Complete Columns B through E with the identification number, income amounts, and Illinois withholding.
- If you have more than five withholding forms, complete multiple copies of the schedule.
- Add Column E for Lines 1 through 10, including Column E amounts from any additional copies. Enter the total on Line 11 and on Form IL-1040, Line 25.
- Attach all Schedules IL-WIT to your Form IL-1040. Check the amended-return box if attaching to Form IL-1040-X.
Common mistakes
- Leaving out a W-2 or 1099 that shows Illinois withholding. The schedule says to include all of these forms.
- Not completing additional copies when you have more than five withholding forms.
- Forgetting to include withholding from additional schedules in the Line 11 total.
- Forgetting to enter the total on Form IL-1040, Line 25, or to attach all Schedules IL-WIT.
The form warns that providing this information is required and that failure to provide it could result in a penalty.
Questions people ask
Where do I enter my spouse’s withholding?
Use Step 2, Lines 6 through 10. Enter your spouse’s name as shown on Form IL-1040 and their Social Security number.
What if I have more than five withholding forms?
Complete multiple copies of Schedule IL-WIT. Include the Column E amounts from the additional copies in your total and attach all schedules to Form IL-1040.
Which code do I use for a W-2 or 1099-R?
Use W for Form W-2 and R for Form 1099-R in Column A. The chart on the schedule lists the codes for other form types.
Where does the total Illinois withholding go?
Enter the total on Schedule IL-WIT, Line 11, and on Form IL-1040, Line 25.
Can I attach this schedule to an amended return?
The schedule includes a box to check when attaching it to amended Form IL-1040-X.