Modernized e-File (MeF) Status

Modernized e-File (MeF) Operational Status 

Modernized e-File (MeF) Production Calls

When: May 14, 2019 from 2:00 to 3:00 p.m. Eastern

Conference line: 888-331-8226 participant code 3600320

Filing Season Start Dates:

Electronic filing:

  • The IRS is now accepting business and individual tax returns.


Schemas and Business Rules: Beginning September 2016 Software Developers and State organizations started receiving the schemas and business rules through their e-Services mailbox rather than downloading them from the IRS website. In order to access these files you must have an active e-Services account and be listed on an e-File application with the provider option of Software Developer or State. Your role must be Responsible Official, or Delegated User with MeF authorities.  These mailbox messages are purged after 30 days so please make sure to download them as soon as possible. Instructions for accessing the SOR Mailbox (PDF) were created for your use. You may access the login page, register for e-services, reset your password, and make changes to your existing account on e-Services Online Tools for Tax Professionals.

Refer to Modernized e File MeF Schemas and Business Rules for additional details on versions and dates for each form family. (Updated 3/15/2017)

Distribution of Modernized e-File (MeF) New Web Service Definition Language (WSDLs):

(Updated 12/6/2018)

WSDLs for Tax Year 2018/Processing Year 2019 are available (WSDL version R10.2)

The new WSDLs are installed in the MeF Test environment (ATS) as of October 30, 2018. They will also be required for MeF Production for Processing Year 2019.

As a reminder you should be using the "la.alt" (la.alt.www4) for ATS and "la" main" URL (la.www4) for Production environments.