The U.S. Internal Revenue Service (IRS) Modernized E-File (MeF) system will be shut down for upgrades on two occasions beginning this week. The system will be unavailable for use during these times:
- 12:01 a.m. July 18 – noon July 22
- 12:01 a.m. Aug. 3 – noon Aug. 5
MeF submissions should not be made during the outage periods.