Starting in July 2026, Austria introduced a new 4.9% VAT rate, which requires additional tax box numbers in the VAT return (U30).

We are using the standard VAT Statement AT (Report 11110) in Microsoft Dynamics 365 Business Central to generate both XML and FDF files for submission and processing of the Austrian VAT return.

After reviewing the current Business Central cloud version, we noticed that Microsoft has already updated the XML schema to support the new tax box numbers. However, the corresponding FDF schema has not been updated and is still missing the required fields.

The following tax box numbers are affected:

• 124
• 125

As a result, customers who rely on the FDF export cannot fully report transactions related to the new 4.9% VAT rate.

Expected Behavior

The FDF schema should be aligned with the XML schema and extended to include the same new tax box numbers (124 and 125), ensuring consistent support across both export formats.

Business Impact

Many Austrian companies still use the FDF format for populating and processing the VAT return (U30). Without these fields, the generated FDF file does not fully reflect the current legal requirements introduced in July 2026.