Modernized e-File (MeF) Schemas and Business Rules


The following links provide XML (Extensible Markup Language) Schema information, Business Rules (reject criteria), and related announcements for Software Developers and Transmitters who are interested in developing software for Modernized e-File (MeF).

Schemas and Business Rules Distribution 

Schemas and Business Rules are now available through the Registered User Portal and your e-services mailbox. Please refer to the MeF Status page for additional details and instructions.

Known Issues and Solutions

Known Issues and Solutions are temporary workaround solutions to allow returns to be e-filed. A separate Known Issue and Solutions file is available for each tax year.

State Return Information

Both federal and state returns must be submitted in IRS-approved XML format. Federal returns must conform to valid Schema versions. State returns must conform to the return structure specified by IRS and include elements defined for the specific state data. The Master Schemas are available on the  Federation of Tax Administrators (FTA) website.

Modernized e-File Program Information

E-file Options