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e-Slog — Slovenia e-invoicing

Invoicerr does not support Slovenia

No Slovenia data file exists anywhere in this repository — no country policy, no identifiers, no tax system, no transmission channel. Nothing on this page is implemented. It is here so that someone who wants Slovenia support knows what adding it would involve. The countries Invoicerr does cover are listed in the country directory.

Slovenia's national e-invoicing standard is e-Slog, certified by the GZS (Chamber of Commerce) and accepted alongside Peppol BIS Billing 3.0. The Financial Administration (Finančna uprava) is the tax authority behind the B2G mandate.

What supporting Slovenia would involve​

Systeme-Slog, delivered over the Peppol network
AuthorityFinančna uprava — Financial Administration
FormatEN 16931 (Peppol BIS). This repository already builds and validates it (formats/peppol-bis-provider.ts, formats/ubl-provider.ts), so the format would not have to be written from scratch.
TransmissionPeppol Access Point. The Peppol transport was removed from this repository on 2026-09-15 for want of a real Access Point account, so one would have to be built.
Inherited, unverified

Carried over from an earlier research pass in this repository's own history, and never checked against a primary source. Leads, not facts — confirm every line before writing it into a data file.

  • B2G e-invoicing cited as mandatory since 2015.
  • B2B e-invoicing remains voluntary.
  • Software used to produce e-Slog invoices is cited as requiring GZS certification.

Which catalogues a contributor would add​

Adding a country is data, not code. Adding a country is the procedure and the contract each file has to satisfy; this is only the shopping list for Slovenia.

  • country-policy/data/si.json — which document actions Slovenia allows. Start here: without this file every action is refused with a 403, naming the country.
  • country-identifiers/data/si.json — which national identifier a party must carry.
  • tax/tax-systems/data/si.json and vat-rates/data/si.json — the tax kind, and the rate ladder offered on an invoice line.
  • correction-routes/data/si.json — all eleven canonical correction routes, unverified where unresearched, never omitted.
  • b2g-routing/data/si.json — the channel and format a Slovenian public buyer requires.
  • transports/channel-policy/data/si.json — whether a channel is legally required of a seller established in Slovenia, and from what date.
  • archive/retention/data/si.json — how long an archived document is kept, and what the duration is counted from.

Add mentions/, content-requirements/, country-fields/, reporting/ and domestic-reverse-charge/ only where the law actually gives them content.

Data alone will not finish the job here: the Peppol network is a transmission channel this repository does not implement, which is code, not a JSON file — see When a country needs more than a file.

Want Slovenia supported?​

Check the open compliance issues first. If there is no issue for Slovenia, open one and name which of the files above you need — a request that names one mechanism is far more actionable than "please add Slovenia".