Uniform Format (OPENFRMT): What Is a BKMVDATA File and Why Your Accountant Requests It

When an accountant asks for a uniform-format file, they are normally not asking for a PDF report or a screenshot from bookkeeping software. They need a structured export produced by the accounting system, which can be checked and processed under Israel Tax Authority instructions. The authority also provides a simulator for an initial validity check of a uniform-format file produced by bookkeeping software.

BKMVDATA is a term often encountered around this export. For a business owner, the important point is not to edit the file manually. Confirm which exact export the system creates, the requested period, and the applicable specification version.

A reliable production process

1. Confirm the period, legal entity, and purpose with the accountant: review, audit, migration, or reporting.
2. Back up the data store or create a clear data snapshot before exporting.
3. Generate the file from the accounting system. Do not open and re-save it through Excel or a text editor.
4. Run the initial check through the Tax Authority simulator or the requested validation workflow.
5. If validation fails, retain the error message, software version, and preceding actions. Do not change individual file rows until the originating system data is understood.

When an export layer is the right solution

If a legacy system cannot create the required file, build a controlled export layer: read from a defined snapshot, map fields explicitly, validate completeness, and output an exception report. This keeps corrections in the source system and makes every regenerated file explainable.

This is technical information, not tax or accounting advice. Confirm the binding requirements with the official source and the relevant accountant.

Source

Israel Tax Authority uniform-format file simulator