Section 12. OUTPUT FILES OVERVIEW
0426 Publ 3373 (PDF) · 2026-10-03 edition · updated 2026-10-04 · United States
- The output files are ONLY available through the IRS approved secure file transmission method for state agencies. To retrieve your output files from the IRS you must have: SLFT B2B. Review user guides and decide which protocol to use (Hypertext Transfer Protocol Secure (HTTPS) or Secure File Transfer Protocol (SFTP).
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- Agencies may submit one file for processing per month, except for January. You will receive up to 4 output files placed in your staging Folder:
• File 1 will contain the invalid requests (D3) with an extension of “txt.” • File 2…¶
• File 3 – D9 with an extension of “txt” will contain the records we were able to find¶
• File 4 with an extension of “cntl.txt” will contain the record count in the D9 file.¶
Agencies electing not to receive the D3 file should enter an “S” in position 89 of their Input file and only the D9 files will be placed in your staging folder for retrieval. Section 16 – Output File for D9 Report will provide the field positions and field name/description.
The IRS will initially validate all SSNs and Name Controls provided by the requesting agency against the NAP DM1 file prior to running the agency’s input against the IRMF. All records that do not pass the NAP DM1 validation process, as well as invalid agency code, SSNs not all numeric or Name Controls not meeting specifications, will be captured on the D3 file.
All records that passed the diagnostic and NAP DM1 validation processes are matched against the IRMF. These records represent FTI reported by the payers or “no match” when no information is available or information available is not authorized for disclosure. The records are returned on the Information (D9) file.
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