Fiscal subject related
The previous proposal on B2B e-invoicing was extensively revised by the new draft law that the Slovenian Minister of Finance submitted in February 2025.
Slovenia's New Draft Proposal for B2B E-invoicing states that mandatory B2B e-invoicing is a major change suggested by the Financial Administration of the Republic of Slovenia (FURS) to prevent VAT evasion. This project aims to improve control mechanisms and improve Slovenia's tax system, which will lower fraud and increase tax compliance.
Significant changes have been made to the earlier plan by the new draft law on B2B e-invoicing, which was submitted on February 11, 2025. These changes refer to the following:
- The mandate is postponed. The implementation date has been rescheduled from July 2026 to January 2027.
- The modified concept does not include real-time reporting. Invoice data must be sent to the Slovenian tax authorities (FURS) via the e-SLOG standard within 8 days of the previous proposal’s e-reporting obligation.
- Additional requirements are needed, such as ISO/IEC 27001 certification, for accredited e-invoicing service providers.
- The Peppol network is specifically listed as a B2B e-invoicing exchange network.
The most recent draft proposal states that the new implementation date is January 1, 2027.
The requirement to issue, send, and receive invoices electronically in business-to-business (B2B) transactions is known as the Slovenian e-invoicing mandate. Customers will have the option of getting an e-invoice or one in paper or PDF forms, although B2C transactions are not subject to the e-invoicing requirement. In any event, emailing a final client (B2C) an electronic invoice is only permitted with the recipient's consent.
The following e-invoicing forms must be used under the proposed legislation:
- The e-SLOG national standard.
- Any syntax that complies with a European standard EN 16931
- Another globally accepted format where both the issuer and the recipient agree on the contract.
The main goal of the measure is to combat fraud more efficiently and to reduce the VAT gap.
Other news from Slovenia
TLv6 Implementation Marks Significant Shift in EU’s Trust List Format
A new EU Trust List format, TLv6, will officially replace TLv5 in May 2025 as part of the updated eIDAS Regulation (EU 2024/1183). It introduces key technical changes like a new URI field, updated signature format, and optional phone number support. Organizations must update their systems to avoid signature validation failures and service disruptions, as TLv5 will no longer be valid once TLv6 take... Read more
Slovenia: Update Regarding VAT Reporting and Electronic Invoicing

Starting July 2025, all VAT-registered businesses in Slovenia must submit VAT records to the tax authority (FURS) in a structured digital format. A draft law also proposes mandatory B2B e-invoicing from January 1, 2027, covering all taxpayers and supporting formats like e-SLOG and EN 16931. These changes aim to reduce tax fraud, streamline compliance, and increase transparency through digital repo... Read more
VIDA regulation adopted—what does that mean for business?
The EU adopted the VAT in the Digital Age (ViDA) package on March 11, 2025, introducing major changes to the VAT system starting January 1, 2027. Key reforms include mandatory digital VAT reporting by 2030, new VAT collection rules for online platforms, and expanded One-Stop Shop (OSS) registration to simplify cross-border compliance. Additional measures, such as mandatory e-invoicing, phasing out... Read more
Slovenia: Beginning in July 2025, mandatory VAT reporting and pre-filled VAT returns

Starting July 1, 2025, all VAT payers in Slovenia must provide proof of calculated VAT and VAT deduction, with pre-filled VAT returns introduced under Article 88.d. The Financial Administration's website provides detailed guidelines and technical specifications for submission via the KIR KPR online service. All VAT payers are required to provide proof of calculated VAT and proof of VAT ded... Read more
New document was uploaded: S4F backoffice patch
S4F backoffice patch is intended for users who have already installed S4F backoffice and are intended to update existing installations to latest version. To do so apply only patches that are marked with version number that is newer than your currently installed instance of backoffice. Read more
Slovenia: EU Targets Unsafe E-Commerce Imports with New Measures
The European Commission is tightening regulations on e-commerce imports to address the surge of unsafe and counterfeit goods, particularly from China, by reforming customs rules and increasing product safety checks. Key measures include removing the duty exemption for low-value parcels, introducing a potential customs fee, establishing priority control areas, and launching an EU-wide product safet... Read more