Croatia’s Tax Administration has outlined that e-Invoices will be exchanged through certified access points—either taxpayers themselves or registered intermediaries—ensuring secure transfer, interoperability, and compliance with fiscalization requirements. By December 31, 2025, businesses must implement compliant invoicing software, contract an intermediary, and register their e-Invoice receiving... Read more

From January 1, 2026, Croatia will mandate eInvoicing for all domestic B2B and B2G transactions, requiring invoices to be issued in a structured electronic format and submitted to the tax authority’s fiscalization system. The obligation applies broadly to VAT-registered businesses, income and corporate tax payers, and public bodies established in Croatia. From January 1, 2026, electronic invoicing... Read more

The Tax Authorities Fiscalization System has been updated to require the operator’s personal identification number (OIB) as a mandatory element in B2B transactions, in addition to B2C. This change applies to fiscalization messages for e-invoices and eReport submissions, with updated technical documentation and WSDL files provided to support compliance and enhance transparency. The Tax Authorities... Read more

Croatia will extend its e-invoicing system from public sector transactions to all domestic B2B transactions, starting with a testing phase on September 1, 2025, and a full mandate for VAT-registered businesses on January 1, 2026. From January 1, 2027, the requirement will also cover non-VAT registered businesses, with real-time validation and integration into the Fiscalization 2.0 programme to com... Read more

The purpose of this document is to explain the main changes regarding the implementation of Fiscalization 2.0 in Croatia, a project set to roll out as mandatory starting January 1, 2026. Read more

S4F backoffice patch is intended for users who have already installed S4F backoffice and are intended to update existing installations to latest version. To do so apply only patches that are marked with version number that is newer than your currently installed instance of backoffice. Please make sure to install all available patches sequentially (without skipping). This package contains instruction, release notes, changelog and software packages required for deployment of this software component. Read more