Invoicing and VAT in the European Union (EU)


Value Added Tax (VAT) - Important: if you do not live in the EU you won't be charged VAT - information contained in this page does only apply to EU member state citizens - following EU tax regulations, goods as well as services (such as membership or abstract submission charges) paid for within the EU are subject to VAT (Value Added Tax).

Most users/members act in their own private capacity as an individual and therefore must not fill out the VAT registration number field


Institutions, companies (or self-employed individuals) legally registered as VAT taxable entities in their own EU member state may want their transaction with the ISHS to be considered under the EU VAT "reverse charge mechanism". This means that they would not pay VAT to ISHS; instead they would settle VAT in their own EU member state by means of their company's VAT declaration.

For the "reverse charge mechanism" to be applied strict legal rules are in place. The mechanism can only be considered for those transactions in the name of VAT registered and taxable customers who provide ISHS with their valid VAT registration number prior to the transaction being concluded and paid for. By entering a VAT registration number and applying for the transaction to be considered under the "reverse charge mechanism", customer declares to be the authorized user of the VAT registration number for the purpose of the transaction concerned.

To prevent abuse and to allow cross-checking, EU tax regulations require ISHS to file and report all "reverse charge mechanism" transactions details to the VAT administration in the EU member state of the customer.

ISHS is registered in Belgium: VAT BE0472 448 990 [Pastoriestraat 2, 3360 Korbeek-Lo, Belgium] Consequently ISHS cannot accept claims for the "reverse charge mechanism" to be applied to transactions that previously had been concluded and paid for inclusive of VAT. VAT related transactions are considered final - no refunds - no changes.

To check the validity of an EU VAT registration number go to

For further reading on the subject go to