E-Invoicing in Slovenia

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Mandatory Electronic Invoicing in Slovenia

Learn how to get your company ready to exchange documents in accordance with Slovenia requirements with the support of Comarch

Slovenia is on the Road to E‑invoicing

In Slovenia, electronic invoicing for B2G relationships has been in effect since 2015. The standards used in this country include e-SLOG, a local adaptation of the XML standard, as well as UBL 2.1, and UN/CEFACT CII D16B. While the scope of mandatory B2B e-invoicing has not yet been specified, work has been ongoing since March 2023 to secure Slovenia's support for proposed changes to the EU VAT Directive 2006/112/EC and the ViDA proposal on electronic invoicing within the European Union.

The Slovenian government has published a draft bill proposing a B2B electronic invoicing mandate starting June 1, 2026. The proposed system will allow invoices to be issued in three formats: the e-SLOG national standard, an EN16931-compliant standard, or any other internationally recognized structured invoice agreed upon by all transaction parties.

E-invoicing process description

Reporting requirements

Issuers and recipients will be required to report these invoices to the Tax Authority within 8 days of issuing or receiving said invoice. Reporting will need to be conducted exclusively in the e-SLOG format. These rules will apply to both domestic and international transactions.

Authorities do not anticipate introducing a B2C mandate in the near future.

E-invoicing process description

E-invoices can be submitted directly via a web portal, certified e-invoice solution providers, or through Bankart e-invoicing solutions offered by banks participating in Slovenia’s e-invoice interbank exchange through the Public Payments’ Administration of the Republic of Slovenia. PPA has been connected to PEPPOL since 2018.

Slovenia employs a post-audit model for B2B invoicing, and buyer consent is required to receive e-invoices. The issuance of e-invoices is not subject to any specific requirements.

How can we help?

Comarch supports e-invoicing activities through regular EDI, as there is currently no mandate for B2B transactions.

Why is Comarch the best choice?

We have 20+ years of experience in carrying out various EDI, e-invoicing, and other document exchange projects around the world. In those years, we have successfully connected more than 130,000 entities from over 60 countries.

1. Legal compliance
Full compliance with the latest data exchange regulations and modern data transfer standards
2. Digitization
Applying new technologies and IT solutions in order to streamline workflows and automate activities and procedures
3. Individual approach
Tailor-made solutions based on processes specific to each company – own road map and a suitable pace of changes
4.Security
Highest level of security for all sensitive and important company data

Do you want to know more?

If your company is based or has branches in the Slovenia and you need to prepare your billing and tax systems to comply with the new requirements. Click on the button below to get in touch with one of our experts.

Achieve Global e-Invoicing Compliance with Comarch

Make sure your business meets international standards with the Comarch e-Invoicing platform, trusted in more than 60 countries. Enjoy hassle-free integration and continuous compliance updates.

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