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Form 3921 (Rev. April 2025)
If you have 10 or more information returns to file, you may be required to file e-file. Go to IRS.gov/InfoReturn for e-file options. If you have fewer than 10
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Electronic Filing (CM/ECF)
CM/ECF is the federal Judiciarys system that allows case documents, such as pleadings, motions, and petitions, to be filed with the court online.
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Rule 5. Serving and Filing Pleadings and Other Papers
Service is complete when a person files the paper with the courts electronic-filing system for transmission to a registered user, or when one person sends it
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