Knowledge base
Useful instructions and guides
Find detailed instructions for using our services and government systems.
New requirements for displaying prices and publishing price lists
New rules for reference prices and digital price lists apply from 1 October 2026.
Granting a power of attorney through ePorezna
Instructions for granting power of attorney for the ePorezna system.
Granting a power of attorney through eOvlaštenja
Instructions for granting power of attorney for the eOvlaštenje system.
Access to HNB exchange rates
A free API for accessing Croatian National Bank exchange rates with 99.99% availability.
Guide to issuing invoices
Fiscalization 2.0 and invoice types - how to choose the right invoicing option.
VAT exemptions
Reverse charge, businesses outside the VAT system and domestic reverse charge (PPO) - a guide to using exemptions.
Obtaining a Fiscalisation 1.0 certificate
A guide to obtaining a digital certificate for fiscalisation of final consumption through Fina.
Official APN interpretation: Registering a company's registered office at a subsidised property
Can you register your company's registered office at a property purchased with a subsidized loan?
Document timestamps
Qualified eIDAS timestamps for all documents — cryptographic proof of existence and integrity.
Travel orders
Business travel management: requests, approvals, calculation of daily allowances and travel expenses, and certification.
MCP Server
Connect AI assistants to accounting data using the Model Context Protocol (MCP).