Financial Data Exchange (FDX) Tax
The Financial Data Exchange (FDX) organization (see financialdataexchange.org) establishes standards for electronic exchange of both banking and tax information.
The FDX specification version 3.0 defined standards for 9 annual tax forms. Version 4.1 defined standards for 34 annual tax forms. Version 4.2 of the standard was published on October 5, 2020 and added standards for an additional 17 forms.
The official FDX specification document is available at financialdataexchange.org. Final specifications may be accessed and used royalty-free. FDX members may participate in the creation and review of draft specifications.
This website does not contain the official specification document itself. It provides information derived from the specification in HTML format.