The vouchers issued for a specific activity were deemed to be payments in advance, suggesting that both the applicable VAT and the place of supply of the underlying goods or services were known at the time of issue. In its opinion, the court essentially stated that a distinction had to be made between a pure value voucher (Wertgutschein) and a service voucher (Leistungsgutschein).
Source: KPMG
For more posts about vouchers (including vouchers to fight VAT fraud, please click on the tag below).
