Business Income Tax Forms

Corporate Income Tax - IL-1120

• Current Year - (For tax years ending on or after 12/31/2017 and on or before 12/30/2018)
• Prior Years

Exempt Organization Income and Replacement Tax - IL-990-T

• Current Year - (For tax years ending on or after 12/31/2017 and on or before 12/30/2018)
• Prior Years

Fiduciary Income and Replacement Tax - IL-1041

• Current Year - (For tax years ending on or after 12/31/2017 and on or before 12/30/2018)
• Prior Years

Partnership Replacement Tax - IL-1065

• Current Year - (For tax years ending on or after 12/31/2017 and on or before 12/30/2018)
• Prior Years

Small Business Corporation Replacement Tax - IL-1120-ST

• Current Year - (For tax years ending on or after 12/31/2017 and on or before 12/30/2018)
• Prior Years

Withholding Tax (Payroll) - IL-941

Illinois Department of Employment Security Forms (Unemployment)