Reference: bns Type: Withholding Form: WT Transmittal for Paper Forms W-2 and 1099 Forms Filing Date: January 31. If any due date falls on a Saturday, Sunday or legal holiday, the statements must be filed by the next business day. Attachment(s): Form WT Transmittal for Paper Forms W-2 and 1099 [PDF] This document is presented in Portable Document Format (PDF). A PDF reader is required for viewing. Download a PDF Reader or learn more about PDFs.