1120 Mississippi 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.

Mississippi Dept of Revenue
E-File Coordinator P.O. Box 1033 Jackson, MS 39215

Email
: efile@dor.ms.gov Phone
: 601.923.7582

Grace period	10 days
E-filing mandate	Pass-through entities that issue 100 or more K-1s are required to file electronically Corporations and pass-through entities with assets greater than $250,000 are required to file electronically for tax years beginning on or after January 1, 2019 and all subsequent tax years
Accepts state-only filings	Yes
Return types accepted	C Corporation S Corporation Consolidated/Combined Amended Short-year Composite (part of main return) Extension
Return types not accepted	Estimate Payments
Direct deposit of refunds	No
Accepted forms of payment	Direct debit (EFW) Electronic funds transfer (EFT) Check by mail
Signature requirements	All filers must use PIN. In addition, ERO retains Forms 83-115/84-115 for 3 years. Same requirements for extensions.
Supports PDF attachments	Yes
Tax year(s) supported for e-filing	Current tax year and two prior tax years
Special considerations	N/A