Tax return

Within the tax return the business entity liable to tax must submit the information necessary in order to collect the top-up tax, along with any necessary enclosures, which is ultimately equivalent to filing a tax return at group level.

Instead of entering the data manually, it is possible to upload the tax return as an XML file directly from the financial systems to OMTax.

XML schema (XSD file) and specification for the upload file

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Last edition: 30.01.2026