In 2016, The European Union Council has adopted the Voucher Directive which is aimed to clarify and harmonize the relevant VAT rules.
Crucial novelty is the distinction of two types of vouchers:
• Single-purpose vouchers and
• Multi-purpose vouchers
To be able to understand the difference between these two groups, first, you need to understand what is a voucher under the new rules?
Source Tijana Milojevic