If either of your parents is self-employed or owns a business/farm, you will need to provide information about the business or farm's income, assets and liabilities by submitting the 2023-24 Business/Farm Supplement and the 2021 business return.
Submit the 2021 federal tax return for each business (Partnership, S Corporation or C Corporation) as follows:
|Business Type||Tax Form||Include|
|Partnership||Form 1065||K-1 schedules and all attachments|
|S Corporation||Form 1120-S||K-1 schedules and all attachments|
|C Corporation||Form 1120||All schedules and attachments|
When you are finished, upload the form to the IDOC website.