Modernized eFile (MeF) Operational Status

More In Systems Status

Current System Status: 
Production System: Operational*
Assurance Testing System (ATS): Operational

Scheduled Maintenance Build: A routine system maintenance build is scheduled every Sunday from 1:00 a.m. to 7:00 a.m. Eastern.


Assurance Testing System (ATS) The TY2018/PY2019 WSDLs, schemas and business rules have been loaded in ATS. All existing test submissions will be deleted except for those sent in during the thirty days prior to cutover.(Updated 10/29/2018)

New Schemas and Business Rules are Available! Software Developers and State organizations may access and download new Schemas and/or Business Rules from their e-Services mailbox. 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.(Updated 12/11/2018)

Tax Year 2018 / Processing Year 2019 Schemas and Business Rules are available.

Schemas and Business Rules:

   • Form 990x                               2018v3.1
   • Form 1120 POL                     2018v2.1
   • Form 1065                              2018v4.1
   • Form 1041                              2018v5.0
   • Form 1120x                            2018v5.1
   • Form 1040 Series                 2018v6.0

Change Pages Only:

   • Form 9465                             CUv20.0
   • Form 56                                 CUv16.0
   • Form 940                               2018v1.0
   • 94x Online PIN Registration CUv3.0

Modernized e-File (MeF) Production Calls: TBD

Filing Season Start dates: TBD

For more information regarding MeF, please see the Modernized e-File (MeF) Program Information on