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........................................................................................................... 2  \n1.2 Using Publication 4163 .............................................................................................................................. 2  \n1.3 General Information .................................................................................................................................. 2  \n1.4 Authorized IRS e-File Providers ............................................................................................................... 2  \n1.4.1 Electronic Filing Identification Numbers (EFINs), Electronic Transmitter Identification Numbers (ETINs), and Passwords ......................................................................................................................... 2  \n1.4.2 Electronic Return Originator (ERO) ......................................................................................................... 3  \n1.4.3 Transmitter .............................................................................................................................................. 3  \n1.4.4 Software Developer ................................................................................................................................. 4  \n1.4.5 Online Provider ........................................................................................................................................ 5  \n1.4.6 Intermediate Service Provider (ISP) ........................................................................................................ 6  \n1.4.7 Reporting Agent ...................................................................................................................................... 6  \n1.4.8 Large Taxpayer ....................................................................................................................................... 6  \n1.5 Communicating with IRS........................................................................................................................... 6  \n1.5.1 MeF Status Page ..................................................................................................................................... 7  \n1.5.2 Helpful Publications and Information ....................................................................................................... 7  \n1.6 Overview and Benefits of MeF .................................................................................................................. 9  \n1.7 New for Processing Year......................................................................................................................... 10  \n1.7.1 Forms .................................................................................................................................................... 10  \n1.7.2 Schema Updates ................................................................................................................................... 11  \n1.8 Forms for Processing Year 2026 ..............................................","cbCain2GDil2CNrd","https://ap.wps.com/l/cbCain2GDil2CNrd","pdf",1415699,96,"English","# Processing Year 2026 Nature of Substantive Changes\n# Introduction and General Information\n## What is Modernized e-File (MeF)?\n## Using Publication 4163\n## General Information\n## Authorized IRS e-File Providers\n## Communicating with IRS\n## Overview and Benefits of MeF\n## New for Processing Year\n## Forms for Processing Year 2026","[{\"question\":\"What is Modernized e-File (MeF) according to Publication 4163?\",\"answer\":\"Publication 4163 defines Modernized e-File (MeF) and explains its role for authorized IRS e-file providers preparing and submitting tax returns. It provides an introduction and general information section dedicated to MeF.\"},{\"question\":\"Which kinds of authorized e-file providers are covered?\",\"answer\":\"The document lists multiple authorized provider types, including electronic filing identification number holders and roles such as ERO, transmitter, software developer, online provider, ISP, reporting agent, and large taxpayer categories.\"},{\"question\":\"How does Publication 4163 help providers communicate with the IRS?\",\"answer\":\"It includes a section on communicating with IRS, featuring the MeF Status Page and pointing to helpful publications and information needed during processing.\"}]","Publication 4163 - Modernized e-File (MeF) Information for Authorized IRS e-File Providers - Tax Returns Processed in Year 2026 | PDF",34]