2017 Valid XML Schemas and Business Rules for 1120, 1120S, and 1120-F Modernized e-File (MeF)

The links below provide information and technical guidance for Software Developers and Transmitters who are interested in developing software for the Modernized e-File Forms 1120, 1120S and 1120-F for Tax Year 2017.

Developers and other Authorized IRS e-file Providers can find information on e-filing returns through MeF in Publication 4163 and Publication 4164. Directions for Corporations required to e-file can be found through the e-file for Large and Mid-Size Corporations website. Test Scenarios for the 1120 family can be found on the ATS Updates Page

XML Schemas, Business Rules and Memo - Throughout the year, multiple versions of these documents may be in use at the same time. Special attention should be paid to the Release Memo issue date and the projected start and end dates for Assurance Testing System and Production.

Form 1120 Schemas and Business Rules is now through the Registered User Portal and your e-services mailbox. This mailbox is part of the Secure Object Repository (SOR). Users will access their mailbox in their existing e-services account to pick up the schema and business rules packages.

Instructions for accessing the SOR mailbox.

Tax Year 2017 Documents

Form 1120, 1120S, 1120-F links to TY2017 Release Memos

Version Available Dates ATS Dates Production Dates Comments
2017v6.1 02-14-2018 03-11-2018 03-18-2018

Business rule updates have been provided 02-21-2018, 03-13-2018, 03-28-2018 and 10-17-2018.

2017v6.0 12-13-2017 12-29-2017 01-08-2018

Business rule updates have been provided 12-27-2017and 02-21-2018.


Current Valid XML Schemas and Business Rules for 1120/1120S/1120-F

Modernized e-File (MeF) Schemas and Business Rules