Frequently Asked Questions

Below you will find the answers to the frequently asked questions. If your question isn't answered, you can contact us via the following e-mail address: .

Both existing customers and non-customers of Grant Thornton can use our services on this website at all times as long as they are online.

No, you only require a working internet browser such as Google Chrome, Internet Explorer, Safari, Firefox etc.

We recommend to validate up to 1.000 VAT identification numbers per validation request for optimal usage of the tool. It is however possible to validate even more numbers at once (as example 3.000 numbers).

You purchase a license fee, which grants you access to the tool for one year (365 days) starting as of the moment of purchase. When the license expires, you can purchase a renewed license fee.

Please refer to the video on the landing page, where you could see a brief demonstration of how the tool works.

Yes, an user manual is available, which can be found on the following page:

It may be possible that the server of the VIES database is not responding. In that case it is unfortunately not possible to validate VAT numbers at that moment. Please also refer to the official VIES website to check the current status of the country servers:

The tool makes a connection with the official VIES database () and receives a response as result of the validation request. The results are returned and displayed in the tool. The results are returned and displayed in the tool.

Your data is stored securely confirm our 

To ensure secure payments, GTDienst uses Mollie's online payment solution. For more information about Mollie go to: .

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