EUVATChecker

A tiny CLI program that checks if EU VAT numbers listed in an Excel spreadsheet are valid and active.

Prerequisites

To build this code you need the vies-dotnet library and the OpenXML-SDK library. Both are available in Visual Studio via NuGet Package manager (use vies-dotnet-api and DocumentFormat.OpenXml.

How to use (once the code is compiled)

Step 1

Create an xlsx file with an Excel spreadsheet making sure the VAT numbers are in Column B and the name of the VAT number holder is in Column C. The first row is ignored so you can keep it as a header for your table. For example:

ID	VAT Number	VAT Number Holder	Description
1	FR12345678901	Desireless & Co. SARL	Voyage Voyage
2	DE123456789	Kraftwerk & Co. GmbH	Radioactivity
3	DK99999999	Raveonettes & Co. ApS	She owns the streets

Step 2

Save the Excel file as vat.xlsx

Step 3

Place the vat.xlsx file in the same folder as the .exe of the EUVATChecker and then execute the .exe.

Good to know

• The program might fail if the EU VIES server is busy.
• If it's not busy then you might be able to even use 2000 rows in the spreadsheet.
• The code is in C# as the library used was using the .NET framework. If anyone has found a more recent Python library, please let me know.

Licence

The code is under the MIT License.