The business landscape in Croatia is about to undergo a digital transformation that will change how companies handle invoicing forever. Starting January 1, 2026, Fiscalisation 2.0 kicks in, requiring all VAT-registered businesses in the country to issue electronic invoices. If you are running a company in Croatia or trading with Croatian partners, this isn’t just another regulatory update to glance over. This is a fundamental shift that requires real preparation.
The Croatian government estimates this move will save businesses around €120 million annually in administrative costs. That is not pocket change. The savings come from eliminating stacks of paperwork, reducing manual data entry, and streamlining an outdated reporting system that currently lags transactions by up to four months. But getting to those benefits requires navigating a complex new digital infrastructure.
How the dual reporting system works
Here’s where things get interesting. Croatia hasn’t just mandated e-invoices. They have created a sophisticated dual-layer system that tracks both your invoices and your fiscal reporting in real time.
When you issue an electronic invoice to another business, you trigger two parallel processes. First, the invoice travels to your trading partner via certified access points using the secure AS4 protocol or Peppol standards. Second, key fiscal data from that same invoice gets extracted, digitally signed with your tax identification number, and sent straight to the Tax Administration through the FiskAplikacija platform.
Both the sender and receiver must report this fiscal data separately. This cross-checking mechanism lets tax authorities verify transactions from both ends, making it nearly impossible for discrepancies to slip through unnoticed. It is clever, comprehensive, and admittedly more complex than what most businesses currently manage.
The AMS directory holds everything together
At the heart of this system sits the Adresar Metapodatkovnih Servisa, or AMS for short. Think of it as Croatia’s national address book for electronic invoices. Every business must register its e-invoice receiving address in this directory, managed by the Tax Administration through the ePorezna portal.
Here is a practical detail that matters: if your trading partner hasn’t registered their address in the AMS, you can’t send them an e-invoice through the standard system. In that case, you’re required to report the transaction through the separate e-reporting service within five working days. No exceptions!
The monthly reporting requirements
Beyond real-time fiscalisation, businesses face additional monthly obligations that often get overlooked in initial planning. By the 20th of each month, invoice issuers must report all payments received during the previous month. This includes invoices that couldn’t be sent electronically because the recipient wasn’t in the AMS system.
Recipients have their own monthly duty: reporting rejected invoices. When you reject an invoice, you automatically waive your right to claim VAT deduction on that transaction. The issuer can then cancel and reissue if needed, but the Tax Administration tracks the entire process through FiskAplikacija.
Getting your technical infrastructure ready
The technical requirements run deep. Every e-invoice must conform to the European standard EN 16931 and use the UBL 2.1 format with Croatia’s local extension, HR-FISK 2.0. That’s just the baseline.
Product classification codes you can’t ignore
One requirement that catches many businesses off guard is the mandatory KPD 2025 product classification system. Every single item or service on your invoices needs a six-digit code from the official classification of products by activity. This isn’t optional formatting. It’s a legal requirement that ensures uniform tracking across Croatia’s entire economy.
Mapping your entire product catalogue to these codes takes time. Companies that wait until late 2025 to tackle this task will find themselves scrambling as the deadline approaches. Innovative businesses started this process months ago.
Choosing your certified intermediary
You cannot handle Fiscalisation 2.0 alone unless you are prepared to build and maintain significant in-house technical infrastructure. Most businesses will need to engage certified information intermediaries authorised by the Croatian Tax Administration.
These intermediaries aren’t just service providers. They are legally responsible for the technical correctness of their solutions and must maintain ISO 27001 certification plus full GDPR compliance. They handle the entire e-invoice lifecycle: issuing, transmitting, receiving, performing fiscal reporting, and complying with the mandatory 11-year digital archiving.
Major players have already entered the market. Fina, the state entity that’s been managing B2G e-invoicing since 2019, now offers fiscalisation services. Croatian Post launched Sveračun with both prepaid packages and enterprise contracts. Croatian Telecom uses a pay-per-use model in which costs drop as volume increases, currently ranging from €0.27 to €0.40 per invoice, plus VAT.
The two-system problem
From January 1, 2026, Croatia will run two separate fiscalisation systems in parallel. Fiscalisation 1.0 continues for B2C consumer transactions. Fiscalisation 2.0 handles B2B and B2G business invoices. These systems use different data structures and technical implementations and require different software solutions.
No single application currently handles both processes seamlessly. This means many businesses will need to manage separate systems for consumer sales and business transactions. That’s an operational headache nobody planned for in their initial budgets.
The free MIKROeRačun has limitations.
The Tax Administration provides a free application, MIKROeRačun, to help small businesses and non-VAT entities comply without a significant investment. Sounds generous, and it is. But there’s a catch in the timeline.
Starting January 2026, MIKROeRačun only allows you to receive e-invoices. The issuing functionality doesn’t activate until January 2027. If you’re a small business needing to both send and receive invoices in 2026, you’ll need another solution for the first year. The government hasn’t emphasised this detail in its public messaging.
Exceptional cases and exemptions worth knowing
Not every transaction falls under the new rules. Some exemptions and exceptional cases provide flexibility, though you need to understand the boundaries clearly.
If a B2B transaction gets paid in cash or by card and generates a fiscal receipt with a JIR code under the old Fiscalisation 1.0 system, you don’t need to issue it as an e-invoice. The law prevents this duplication explicitly. However, you must include the buyer’s tax identification number on the cash receipt, as this is a business transaction.
Certain activities remain completely exempt: scheduled passenger transport tickets for air, rail, coastal maritime, and ferry services. Utilities are billed based on usage of services such as electricity, gas, water, and public communication services. These exemptions continue because their billing systems operate differently.
Cross-border transactions also follow different rules. Paper invoices remain permissible for imports, exports, and intra-EU transactions. Mandatory e-invoicing applies only to domestic Croatian transactions between VAT-registered entities.
What you should be doing right now
If you haven’t started preparing, January 2026 will arrive faster than you think. Here’s what needs to happen before then.
Audit your current invoicing systems and determine whether they can generate structured XML invoices in UBL 2.1 format. Most legacy accounting software cannot. You’ll need either significant upgrades or a complete replacement.
Start mapping your products and services to KPD codes immediately. This tedious but essential task becomes exponentially harder under deadline pressure.
Research and select a certified intermediary before the market gets saturated with last-minute requests. The best providers will have capacity constraints as January approaches.
Register your company’s metadata in the AMS directory through ePorezna. Don’t wait until December to discover technical issues with your registration.
Train your staff on the new processes, especially regarding digital signatures, structured data entry, and handling rejected invoices. The operational changes go beyond just software.
Set up your company’s access to FiskAplikacija to monitor fiscalization statuses, track rejections, and manage ongoing compliance.
The compliance stakes are high.
Non-compliance isn’t just an administrative inconvenience. The Fiscalisation Law treats violations as serious offences with meaningful penalties. More importantly, invoice disputes, delayed payments, and additional audit work create real business disruption, affecting your cash flow and trading relationships.
When both parties in a transaction must report the same fiscal data for cross-checking, any discrepancy triggers immediate scrutiny. Your trading partners depend on your compliance for their own VAT reporting. This mutual dependency means businesses that fail to comply will quickly find themselves frozen out of supply chains.
Looking beyond January 2026
Fiscalisation 2.0 represents just one phase of Croatia’s digital transformation roadmap. By 2027, the mandate will extend to non-VAT-registered entities for issuing invoices, not just receiving them. By 2030, Croatia must align with the EU’s VAT in the Digital Age requirements, which bring additional obligations for cross-border transactions.
The businesses that thrive won’t be those who scramble to meet minimum compliance at each deadline. They’ll be the ones who embrace this digital infrastructure early, optimize their processes around it, and use the real-time visibility to improve their own operations.
The €120 million in annual savings the government projects won’t materialize immediately, as companies still adjust their workflows and pay for new systems. But once the transition stabilizes, the efficiency gains become real: no more paper storage, instant payment visibility, automated VAT reconciliation, and significantly faster month-end close processes.
Croatia is making a substantial bet that digital-first fiscal infrastructure will reduce tax gaps, increase transparency, and ultimately make the country more competitive for business. For companies operating there, ready or not, that future starts in the weeks ahead.
