[e98cuenc]

you definitely have to add the relevant VAT, depending on your customer country, declare it in MOSS where it will be sent to every individual country.

You also have to check if your customer is any other of the countries / states that collect VAT (India, Indonesia, many US states and oh so many random countries) and make a proper declaration in each country. It's almost impossible to do it right if you don't go with a partner to handle it all.