1120 Delaware 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.
Delaware Division of Revenue
820 N. French Street
Wilmington, DE 19801
Phone
: 302-577-8170

State electronic filing details

E-filing information
Details
Grace period
48 hours
E-filing mandate
No
Accepts state-only filings
Yes
Return types accepted
C Corporation
S Corporation
Short year
Extension
Composite
Return types not accepted
Amended
Consolidated / Combined
Estimates
Accepts returns with these conditions
Refund
Zero balance
Balance due
Direct deposit of refunds
Yes
Accepted forms of payment
Direct debit (EFW)
Electronic funds transfer (EFT)
Check by mail
Signature requirements
ERO retains signed copy
Supports PDF attachments
Yes
Tax year(s) supported for e-filing
Current tax year and two prior tax years
Special considerations
N/A
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