The tax year 2023 1041 Modernized e-File (MeF) Assurance Testing System (ATS) information is contained below. If you support these forms, you will need to contact the e-Help Desk for testing. Please monitor this page for any ATS scenario updates. TY 2023 1041 MeF ATS scenarios 1041 MeF ATS Scenario 1 PDF (10/10/2023) 1041 MeF ATS Scenario 2 PDF (10/27/2023) 1041 MeF ATS Scenario 3 PDF (10/10/2023) 1041 MeF ATS Scenario 4 PDF (10/10/2023) 1041 MeF ATS Scenario 5 PDF (10/10/2023) 1041 MeF ATS Scenario 6 PDF (10/27/2023) For information and questions regarding ATS, please contact the e-Help Desk at 866-255-0654. Modernized e-File (MeF) Assurance Testing System (ATS)
