IL Tax Return Rejection Code IL1040-9900-4

Problem: The Illinois Dept. of Taxation is asking you to make an IL tax return correction.

Solution: Please sign in to your account now and click on My Return in the upper left.

1. Sign in:

2. Click on My Return on the upper left and check the message on the right side.

On the left click on State Taxes and then the link on the right side:

I'd like to see the forms I've filled out or search for a form

Select the IL forms and check on all items entered e.g.  Secondary Taxpayer Shared Secret Signature fields must be transmitted: Secondary IL-Pin, Secondary Prior Year AGI, or Secondary IL Shared Secrets Drivers License/State  and check out and eFile your IL return again at no fees. We will send you an email if your return got accepted or not.

If you have questions, please contact us as soon as possible so we can assist you with your Tax Return.