The following form types can be e-filed through the MeF Platform:
- Corporations (Forms 1120, 1120-F and 1120-S)
 - Employment Tax (Forms 940, 940-PR, 941, 941-PR, 941-SS, 943, 943-PR, 944, and 945)
 - 94x Online Signature PIN Registration
 - Exempt Organizations (Forms 990, 990-EZ, 990-N, 990-PF, 990-T, 1120-POL and 4720)
 - Excise Tax (Forms 720, 2290 and 8849)
 - Extensions (Forms 2350, 4868, 7004 and 8868)
 - Fiduciaries (Form 56)
 - Individual (Form 1040/SR/SS/PR/NR)
 - Estate and Trust (Form 1041)
 - Installment Agreements (Form 9465)
 - Partnerships (Form 1065)
 - Withholding Tax (Form 1042)
 
Additional information regarding the MeF Forms can be found on the MeF User Guides and Publications page.
Fed/state program
MeF also supports a Fed/State program that consists of a single point of submission and retrieval for all registered transmitters and State agencies. This Fed/State initiative includes Corporations, Exempt Organizations, Individuals, and Partnerships. Additional MeF information can be found in Publication 4163 PDF and Publication 4164.