Check the operational status for the Modernized e-File (MeF) production and assurance testing systems.
MeF Internet Filing Application unavailable: June 29, 1 – 9 a.m. ET
We’re making planned updates to the MeF Internet Filing Application. Please check back after 9 a.m. ET on June 29. Thank you for your patience.
Production system
Operational
Limited services: Sundays 12 a.m. – 8 a.m. ET
MeF accepts submissions but doesn’t generate acknowledgements or process state services during routine maintenance.
Assurance testing system (ATS)
Operational
Limited services: Sundays 12 a.m. – 8 a.m. ET
MeF accepts submissions but doesn’t generate acknowledgements or process state services during routine maintenance.