Hi praymond, This fix is only EU countries and EU_VAT_ID.
Can you tell me what is GST?
EU VAT :
EU Customers, valid EU_VAT_ID ,Shipping address in the shop country ,VAT yes
Customers from outside the EU ,Shipping address inside the EU ,VAT yes
Other EU customers ,Shipping address inside the EU ,VAT yes
Customers from outside the EU ,Shipping address outside the EU ,VAT no
EU Customers, valid EU_VAT_ID ,Shipping address outside the EU ,VAT no
EU Customers, valid EU_VAT_ID ,Shipping address inside the EU, but not the shop country ,VAT no
Other EU customers ,Shipping address outside the EU ,VAT no