Widespread changes in the Europe-wide electronic invoicing regulation have been taking place in recent years. However, only one European country — Italy — has fully rolled out electronic invoicing nationally. The country transformed its invoicing requirements to make e-invoicing obligatory for most entities (B2B, B2C, B2G (business to government)) in 2019.
As of 2023, many European countries are in the pipeline of adopting electronic invoicing regulations.
Source 1stopvat