26 USC App Rule 22: Filing
From Title 26-AppendixTITLE III.-COMMENCEMENT OF CASE; SERVICE AND FILING OF PAPERS; FORM AND STYLE OF PAPERS; APPEARANCE AND REPRESENTATION; COMPUTATION OF TIME
Rule 22. Filing
Any pleadings or other papers to be filed with the Court must be filed with the Clerk in Washington, D.C., during business hours, except that the Judge presiding at any trial or hearing may permit or require documents pertaining thereto to be filed at that particular session of the Court, or except as otherwise directed by the Court. For the circumstances under which timely mailed papers will be treated as having been timely filed, see Code Section 7502.