Mandatory E-Invoices in Croatia from January 2026

Mandatory e-Invoices in Croatia – Key Changes and How bizBox Helps You

Croatia is introducing mandatory exchange and fiscalization of e-invoices in B2B and B2G through certified providers starting January 2026. This is a significant change that will affect companies operating in Croatia. The aim of the legislation is to standardize operations, ensure greater transparency, and strengthen the digitalization of invoice exchange.

To help companies prepare in time, bizBox has prepared an overview of the most important changes and a manual with all the details.

The law applies only to invoices issued and received within Croatia. Invoices sent or received from abroad are not subject to this law.

Key changes introduced by the law:

  • From January 1, 2026: mandatory e-invoices for all VAT payers
  • From January 1, 2027: mandatory e-invoices also for other taxpayers (income from activity, corporate income tax)
  • Standardized UBL 2.1 format (CIUS HR) – bizBox ensures automatic conversions from eSLOG 2.0 to the prescribed standard
  • Simultaneous reporting to the tax administration: every sent and received e-invoice must be fiscalized in the Tax Administration system
  • Additional e-Reporting / e-Izvještavanje
  • Publication of identifiers in AMS: ensuring connectivity between providers and companies
  • Fiscalization 1.0 remains: the existing fiscalization system remains in force for retail invoices

What does this mean for businesses?

Companies will need to adapt their processes so that invoices are:

  • prepared to receive and send e-invoices in the prescribed EN standard,
  • technically aligned with the Tax Administration system,
  • correctly linked with other stakeholders via AMS identifiers – provider confirmation in the FiskAplikacija

If companies prepare in time, the transition will be simple and without complications in daily operations.

How can bizBox help you with this?

At bizBox, we are ready and fully compliant with the upcoming legislation in Croatia, as we will act as a certified provider for the exchange and fiscalization of e-invoices.

Our solutions enable you to:

  • securely and legally issue e-invoices,
  • automatically send fiscalization data to the Tax Administration system when sending and receiving e-invoices,
  • perform data exchange in the e-Reporting system
  • worry-free automated document exchange with your partners within Croatia and partners abroad
  • up-to-date support for legislative changes.

For more detailed information, we have prepared a manual that you can download

Manual