Slovenia

General information

According to the current legislative proposal (the Bill on the Exchange of Electronic Invoices and Other Electronic Documents - ZIERDED), drafted by the Slovenian Minister of Finance, Slovenia plans to introduce e-invoicing and mandatory reporting of e-invoice transactions in the private sector ("B2B") from 1 June 2026.

This draft regulation foresees the exchange of invoices between entities in business-to-business (B2B) transactions using electronic business documents compliant with the definitions in EN 16931 and in other agreed international formats and standards (e.g. UBL, EDIFACT/EANCOM, ANSI X12, EDI-XML, e-Slog, ...) already in use in the international EDI (RIP) environment.

For business-to-consumer (B2C) transactions, paper invoices can continue to be issued. The bill is currently awaiting approval in the National Assembly.

The e-invoicing process in Slovenia:

Invoice creation: The e-Invoice shall be issued in one of the approved formats: in this case, invoices may be issued in the e-SLOG format compliant with the definitions of EN 16931 or in an internationally recognised format (UBL, EDIFACT/EANCOM, ANSI X12, EDI-XML, ...) agreed by both parties.
Submission: e-Invoices can be transmitted either directly by the parties involved or by service providers through different connecting channels and using different marketing solutions.
Validation: The validation of e-invoices is not yet finalised in the current legislative proposals.
Processing: In the current legislative proposals, processing has not yet been finalised.
Archiving: Under the currently proposed law (ZIERDED ), the issuer and the recipient must keep the invoices in accordance with the requirements of Slovenian law.

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