Since 2019 the electronic invoice with public administrations has been mandatory.
e-Invoicing in Croatia
Characteristics of the electronic invoice in Croatia
Following the European directives Croatia has made the electronic invoice mandatory for B2G transactions for public administrations and suppliers.
The government has a central platform called Servis eRačun za državu and is operated by the financial agency FINA which is connected to all public administrations. Connections to the platform are performed through PEPPOL.
PEPPOL UBL 2.1 o CII