IRS Logo
Print - Click this link to Print this page

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


Date Posted

ATS Dates

Production Dates

2012v5.0 08/04/2014 11/03/2014 TBD
2012v4.3 08/02/2013

Start: 08/02/2013 

End: 11/02/2014



(Original Package)


(Revised to include the updated Form 8909 Schema)

Start: 03/03/2013

End 11/02/2014

2012v4.1 12/10/2012

Start: 12/31/2012


2012v4.0 11/01/2012

Start: 12/17/2012 

End: 11/02/2014



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: 03-Nov-2014