> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.sourcinbox.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# How to Add Your IOSS Number on SourcinBox?

You must know that **Import VAT** is required for packages shipping from China to **the EU countries**. And you can use the **One-Stop Shop for Imports (IOSS)** to declare and pay the Import VAT in place of your customers. 

You are allowed to use your own **IOSS number** for customs declaration of your orders on SourcinBox. And you **don’t** need to pay any tax fees to us once you provide your IOSS number.

Please add your IOSS number in the **General Settings - IOSS** section.

* Please make sure that the IOSS number you filled in is correct and valid. You will be liable for any loss if your packages cannot be delivered due to incorrect IOSS.
* If the IOSS number you filled in is incorrect or needs to be revised, please contact your customer manager for assistance.
* If you **don't** have an IOSS number, please **do not** fill in anything here. To ensure that your packages can be delivered to your customers, tax payable will be collected by SourcinBox for customs declaration.

![](https://storage.crisp.chat/users/helpdesk/website/d75dce659b3e5800/how-to-add-your-ioss-number-on_12kqz6y.png)