Home › IRS › Publications › Publication 4163
Publication 4163: Modernized e-File (MeF) Information for Authorized IRS e-File Providers for Business Returns
- Product number
- Publication 4163
- Title
- Modernized e-File (MeF) Information for Authorized IRS e-File Providers for Business Returns
- Type
- Publications
- Issuing body
- Internal Revenue Service (irs.gov)
- Revision (per IRS index)
- Dec 2025
The number, title, and revision date above are reproduced verbatim from the
official IRS
index (captured July 2026). Newer revisions may exist — check irs.gov. This page adds
no instructions or commentary. Not tax or legal advice.