E-invoices over Peppol and e-SLOG for the public sector and B2B
E-invoices over Peppol and e-SLOG for the public sector and B2B
Send e-invoices through the Peppol network, including to UJP and public-sector buyers, or download the e-SLOG file and UJP package to upload yourself in the UJP portal. From January 2028, under the new law, e-invoices also become mandatory between businesses in Slovenia.





What are e-invoices?
E-invoices are structured electronic documents that software can process without manual data entry. Slovenian businesses can send e-invoices over the Peppol network, including to UJP and public-sector buyers, or use the national e-SLOG 2.0 standard and submit the UJP package themselves.
Benefits of e-invoicing
Benefits of e-invoicing
Faster payment — on average 8 days faster than paper invoices
Fewer errors — no manual data transcription
Lower costs — save on printing, postage, and archiving
Eco-friendly — no paper, no waste
Legal compliance — meet e-invoicing requirements for public procurement
How it works in Apollo
How it works in Apollo
Create an invoice as usual
Choose to send over Peppol, or to download the e-SLOG file / UJP package
Apollo sends it through the Peppol network, or gives you a checked e-SLOG 2.0 file and UJP package to upload to the UJP portal yourself
Supported standards
e-SLOG 2.0 — Slovenian national e-invoice standard (Slovenian businesses)
UBL 2.1 — Universal Business Language for international exchange
PEPPOL — European e-invoicing network, including UJP and public-sector buyers

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