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Tax Year 2012 Schemas and Business Rules for Modernized e-File (MeF) Forms 1040/1040EZ/1040A/1040-SS(PR)/4868/2350/9465/56

The tables below provide links to Tax Year 2012 XML schemas, business rules, and release memorandum for Forms 1040, 1040EZ, 1040A, 1040-SS(PR), 4868, 2350, 9465 and 56.

Throughout the year, multiple versions of these schema and business rule packages may be in use at the same time. The table reflects the effective dates in the Assurance Testing System (ATS) and Production System, for each version.

Known Issues: Tax Year 2012 Known Issues and Solutions  


TY 2012 1040 Family

The Business Rule changes that were implemented after the TY2012v4.2 version are included in the Tax Year 2012 Form 1040 Series Business Rule Change Page. (Posted 03/05/2013)

The Business Rules that were implemented between the TY2012v4.1 and TY2012v4.2 versions are included in the TY2012v4.2 Business Rule Package. 


Date Posted

ATS Dates

Production Dates

2012v5.0 08/04/2014 TBD TBD
2012v4.3 08/02/2013 08/02/2013 08/02/2013


(Original Package)


(Revised to include the updated Form 8909 Schema)

03/03/2013 03/03/2013
2012v4.1 12/10/2012 12/31/2012 01/30/2013
2012v4.0 11/01/2012 12/17/2012 N/A


TY 2012 Form 2350

Form 2350 can no longer be filed for Tax Year 2012.

TY 2012 Form 4868

Form 4868 can no longer be filed for Tax Year 2012.

Form 56

The current version of Form 56 must be used.

Form 9465

The current version of Form 9465 must be used.

Modernized e-File (MeF) Program Information

Page Last Reviewed or Updated: 01-Aug-2014