We moved Modernized e-File System Operational Status information to a new section of our website so we can serve you better. We invite you to bookmark the new page for faster access. (Updated 10/2017)
Software Developers Conference
Register for the September 20, 2018, Software Developers Conference at the New Carrollton Federal
Building in Lanham, MD 20706.
Modernized e-File (MeF) Production Calls
Production calls begin Monday, January 29, 2018.
When: Jan. 29, 2018 through Feb. 1, 2018 from 4 to 5 p.m. Eastern Standard Time
Where: 1-888-331-8226 Access Code 3600320
Filing Season Start dates:
• Business tax returns will begin on January 8, 2018
• Individual tax returns will begin on January 29, 2018 (updated 01/05/2018)
New Schemas and Business Rules now available! Software Developers and State organizations may access and download Schemas and 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 02/22/2018)
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. 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 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)
1040 MeF Production Shutdown/Cutover Schedule
Shutdown begins on Saturday, November 18, 2017, at 11:59 p.m. in order to prepare the system for the upcoming Tax Year 2017 Filing Season.
Shutdown Deadlines on Saturday, November 18, 2017 Transmitters:
Transmitting Submissions (State & Federal) 10:00 p.m. Retrieving Acknowledgements 11:59 p.m.
Transmitting Acknowledgements 11:30 p.m.
Business MeF Production Shutdown/Cutover Schedule
Shutdown for "Send Submissions" only is scheduled to begin at 11:59 a.m., Tuesday, December 26, 2017, to prepare the system for the upcoming 2018 Filing Season.
Transmitters can continue to use the other service requests except “Send Submissions” until 11:59 p.m., Tuesday, December 26, 2017.
MeF Assurance Testing System (ATS) Schedule will remain open throughout this production shutdown/cutover period.
Distribution of Modernized e-File (MeF) New Web Service Definition Language (WSDLs):
WSDLs for Tax Year 2017/Processing Year 2018 are available.
The new WSDLs are scheduled to be installed in the MeF Test environment (ATS) October, 2017. They will also be required for MeF Production for Processing Year 2018.
As a reminder you should be using the "la.alt" (la.alt.www4) for ATS and "la" main" URL (la.www4) for Production environments.