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The VAT Registration Number Validator is an automatic VAT validation and VAT data acquiring software.

The VAT Registration Number Validator is software designed for use in eCommerce websites which require fast, accurate, reliable and automatic validation of VAT numbers supplied by customers during a checkout. The VAT Registration Number Validator confirms the validity of the supplied VAT registration number with the European VAT Number Information Exchange System (VIES) database, and if the number is valid, acquires the registrant VAT information, which it then makes available to the eCommerce website using it. The software is able to acquire the information in any of the recognized European languages, as well as obtain a Consultation Reference Number if required. Since all information is obtained immediately from the VIES database, it is guaranteed to always be the latest and most accurate available. Using the software in a website is simple and straightforward. Try the script below by simply entering a valid EU VAT number, and see how it can be useful to you.
Required Data
EU Member State:
VAT Number:
Response Preferences
Response Language:

Validation Results
VAT Number Registrant Details
Using the Script in a Website
To use the software in a website takes only a few minutes. Follow these steps:
  1. Download the software from the MBBSoftware website. The software is compressed in a zip file.
  2. Open the downloaded zip file and acquaint yourself with the FREE MIT Open Source License, and if you agree:
  3. Copy the .NET DLL matching your web server environment in the Bin folder of your website or use the VAT-Validator.cs which ever you prefer.
  4. Start using the software. The examples given in the How to Use page and in the documentation show how to use the VAT Validator software.
How to Use Download Now
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