1065 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

PO Box 19044

Springfield, IL 62794-9044

Website
: tax.illinois.gov

Phone
: 800-732-8866

Grace period	10 calendar days
E-filing mandate	Yes, you must e-file if you are required to e-file the federal.
Accepts state-only filings	Yes
Return types accepted	Partnership Estimates Extension Withholding (part of main return)
Return types not accepted	Amended Short year
Accepts returns with these conditions	Refund Zero balance Balance due
Direct deposit of refunds	Yes
Accepted forms of payment	Direct debit (EFW) Check by mail Electronic funds transfer (EFT is required if payment exceeds $20,000)
Signature requirements	None
Supports PDF attachments	No
Tax year(s) supported for e-filing	Current tax year and two prior tax years
Special considerations