The Tax Year 2021 1041 Modernized e-File (MeF) Assurance Testing System (ATS) information is contained below.

Currently, the 1041 Program has six (6) scenarios to be tested. If you support the 1041 Form Family, you will need to contact the e-Help Desk to test the Forms. Please monitor this page for any ATS Scenario updates.

TY 2021 1041 MeF Forms ATS Scenarios

ATS Known Issues and Solutions

Any updates made to the 1041 scenarios can be found in the TY 2021 1041 MeF ATS Known Issues and Solutions document.

For information and questions regarding ATS, please contact the e-Help Desk at 866-255-0654.


Modernized e-File (MeF) Assurance Testing System (ATS) Updates

Tax Year 2021 1041 MeF Schemas and Business Rules