For IOSS/VAT/EORI Numbers.

To apply Tax IDs (IOSS/VAT/EORI) to your international shipments and prevent unexpected charges for recipients, please follow these steps to configure your account settings:

1. Register your Tax ID
Go to your account Settings and navigate to Customs Data > Tax IDs > Add.
Note: For Norway, your VOEC number can be entered as a VAT number.

2. Apply the Tax ID to your shipments
Depending on how you create your shipments, use one of the following methods:

• For Store-Integrated orders: Go to Settings > Integrations. Under the Stores tab, select your store. 
  In the VAT tab, select the appropriate tax identifier from the dropdown menu and click Update Store Settings.
  
  Tip: You can automate this by going to Setup > Shipping Rules and creating a new rule to apply a Tax ID based on criteria like country, store, or order tags.

• For Single Shipments: If you are creating a shipment via the New Shipment tab, simply select the tax identifier from the Tax ID dropdown menu located above the "Get Rates" button.