SEC. 6. FILING DUE DATES
Internal Revenue Bulletin 1998-13 · 2026-10-03 edition · updated 2026-10-04 · United States
.01 Magnetic/electronic reporting of Forms W–4 to IRS must be at least quarterly (monthly reporting is encouraged). The following are the quarter end dates:
Period Covered Due Date
January 1 thru March 31 April 30 April 1 thru June 30 July 31 July 1 thru September 30 October 31 October 1 thru December 31 January 31
.02 If any due date falls on a Saturday, Sunday, or legal holiday, the Forms W–4 are considered timely if they are filed on the next day that is not a Saturday, Sunday, or legal holiday.
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