IRS Issues 2021 Publication 4164 for Electronic Filing

Oct. 7, 2020, 8:34 PM UTC

A guide to electronic filing for the 2021 tax-processing year was released Oct. 6 by the Internal Revenue Service.

The 194-page Publication 4164, “Modernized e-File (MeF) Guide for Software Developers and Transmitters Processing Year 2021,” outlines the communication procedures, transmission formats, business rules, and validation procedures for returns filed electronically through the Modernized e-file System.

The publication includes updated information for transmitting forms of the 94x series, which includes Forms 940, 941, 943, 944, and 945.

More electronic-filing guidance is provided on the IRS website.

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