Country Guide

🇸🇮 E-Invoicing in Slovenia

PlannedPeppol

Slovenia adopted its B2B e-invoicing law (ZIERDED) in October 2025, effective January 1, 2028. The model is decentralized without real-time CTC reporting — exchange occurs via registered service providers, Peppol, or direct connections. B2G has been mandatory via the UJP platform since 2015.

TL;DR

Slovenia is planning e-invoicing using e_slog_2_0, ubl_2_1, peppol_bis_3_0, en_16931_compliant_syntaxes formats. Connected to the Peppol network for cross-border exchange.

Last updated: January 2026

Quick Facts

Format

e_slog_2_0, ubl_2_1, peppol_bis_3_0, en_16931_compliant_syntaxes

Next Deadline

Jan 2028

Peppol

Connected

Portal

UJP eRačun ↗

Compliance

Mandate Status

Phase

Status

Scope

B2G

Live (Jan 2015)

All public sector suppliers

VAT e-reporting

Live (Jul 2025)

All VAT-registered businesses

B2B mandatory

Jan 2028

All business entities (incl. cross-border)

Technical Specifications

Required CIUSe-SLOG 2.0 (Slovenian national standard, EN 16931 compliant)

Government portalUJP eRačun (B2G platform)

Routing identifierDavčna številka (tax number) or Peppol ID

PeppolYes — Peppol recognized as a legitimate B2B exchange channel

Accepted formatse_slog_2_0, ubl_2_1, peppol_bis_3_0, en_16931_compliant_syntaxes

Practical

Implementation Notes

Slovenia's approach is notable for what it doesn't require: no CTC reporting, no clearance, no mandatory government portal for B2B.

No CTC (removed from final law). The draft law included real-time CTC reporting to FURS, but this was removed before adoption. The final ZIERDED law allows pure peer-to-peer exchange. This makes Slovenia closer to Belgium's Peppol model than Romania's clearance model. Your pipeline doesn't need to report to the government — but separate VAT e-reporting (mandatory since July 2025) still applies.

Format flexibility. The law accepts e-SLOG 2.0, UBL, Peppol BIS 3.0, and any EN 16931 compliant syntax agreed between parties. The recipient's service provider handles format conversion. This flexibility is good for integrators but means you may receive invoices in multiple formats from Slovenian counterparties.

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