1041 Illinois electronic filing information

State contact information

If you have specific questions about what you can e-file or about rejections you received, contact the state for more information.
Illinois Department of Revenue - Taxpayer Assistance Division
Phone:
866.440.8680

State electronic filing details

Grace period
10 Days
E-Filing mandate
Yes, return must be e-filed if federal return is e-filed
Accepts state-only filings
Yes
Return types accepted
Resident
Non-resident
Estimate payments (with return)
Extension (balance due only)
Withholding (part of main return)
Return types not accepted
Amended
Accepts return with these conditions
Refund
Zero balance
Balance due
Direct deposit of refunds
Yes
Accepted forms of payment
Direct debit (EFW)
Online payments via MyTaxIllinois
Check
Signature requirements
None, enter dates on the ILELF screen to sign the return
Supports PDF attachments
Yes
Special considerations
You must pay balances greater than $20,000 electronically
IL requires a federal attachment with the return

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