Go to Admin -> Cost Management -> Order VAT Matching
This table allows the user to define whether an order should include VAT or not.
VAT matching is done first by division, then by the customer and/or billing address.
The result is a percentage that is applied to the line items on the sales order and a VAT code that is displayed in the sales order form.
All VAT data can be added as columns in the order grids.
Invoice Country: This field can be used if you want the VAT to only apply to certain invoice locations. If for example, you choose Belgium here, only locations that have their invoice address in Belgium, will be subjected to this VAT.
The invoice address can be found: Admin -> Masterdata -> Customers.