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Request

To query taxpayer (VAT number) data, send a single XML file in an HTTP POST request.

info

This interface is used to query the validity of a VAT number. The data is from the Online Invoice Platform of NAV, the Hungarian National Tax and Customs Administration.

Requirements​

  • Base URL: https://www.szamlazz.hu/szamla/ (request target)
  • Method: POST
  • Content type: multipart/form-data
  • Form field name: exactly action-szamla_agent_taxpayer (one file upload)
  • File content: the request data as XML (structure: XSD schema; sample: XML example)

Sample HTML form​

The request can be sent for example with a form like this:

<html>
  <head><meta content="text/html; CHARSET=UTF-8"></head>
  <body>
    <form action="https://www.szamlazz.hu/szamla/" method="post" enctype="multipart/form-data">
      <input type="file" name="action-szamla_agent_taxpayer">
      <input type="submit" name="generate" value="Query taxpayer">
    </form>
  </body>
</html>

Try it:

Upload your edited XML file
tip

We recommend validating your XML against the XSD before sending.