As from 1st January 2010 CIGRE is no longer liable to VAT; hence a 0% VAT rate applies for CIGRE services, i.e. Session registrations, publications purchased, membership fees: all tariffs are VAT free, for all countries.
It is recalled that according to European Union regulations the VAT reference number (when there is one) must be supplied as it is mandatory for it to appear on all invoices.
