Invoices to Croatia: why Peppol comes up and is a PDF enough?

Lately customers keep asking us: “Our Croatian buyer wants the invoice via Peppol. Is there really no other way?”

Why this is being discussed

Since 1 January 2026 Croatia has mandatory e-invoicing with reporting of invoices to the tax authority (so-called Fiscalization 2.0). Invoices are to be exchanged in structured form under the European standard EN 16931, through certified access points. Peppol is a natural way to do that.

The obligation mainly covers domestic transactions within Croatia and supplies to the public sector. For an ordinary cross-border invoice from the Czech Republic or Slovakia to a Croatian company, a PDF is still a valid invoice under the VAT Directive, provided the buyer accepts it.

In practice, though, Croatian companies are adapting their processes to structured invoices, and many no longer want PDFs from foreign suppliers, or process them only manually. If you invoice public institutions, or have a Croatian VAT registration, Peppol is a must. In all other cases it is mostly the easiest way to agree with your customer. Always confirm the exact requirements with your customer or a tax advisor. What’s more, Peppol makes sending invoices very simple.

How to get started

You don’t need to change your invoicing system:

1. Register at app.peppos.cz.
2. Complete the verification of your company.
3. Start sending invoices. We support importing ISDOC and PDF.ISDOC files, which most Czech and Slovak accounting programs can generate.

Up to 5 invoices a month for free

If you only invoice Croatia occasionally, it may not cost you anything. You can send up to 5 invoices per month for free.