Invoices between VAT payers and towards the public sector are issued through SEF.
The facts
| Format | Serbian e-invoice (UBL) through SEF |
| Goes to | Ministry of Finance, through the Sistem e-Faktura |
| Regime | Clearance — the authority authorises the document before it is valid |
| Invoice number | Stays ours: gap-free, sequential, yours to control |
| Seller tax ID | Tax ID |
| Buyer tax ID | Tax ID |
| Peppol EAS code | 9948 |
| Integration | Direct, no third-party provider needed |
The part that costs a day
SEF is both the channel and the archive, and the counterparty has to accept or reject the document inside the system — an invoice left unanswered is treated as accepted after the deadline, which turns a forgotten notification into a booked liability. Registration is per legal entity, so a company with several business units still has one account.
We issue gap-free, sequential numbers that reset on your schedule and are never reused — including for voided documents, which keep theirs. The authority takes the document as numbered.
Never extracted from the gross. The two formulas differ by a cent and the wrong one gets the file rejected. The leftover cent is declared as payment rounding (BT-114), where the standard puts it.
Straight talk
We do not hold your signing certificate, we do not file your periodic returns, and we are not your accountant.
Issuing here goes through a certified provider, with your own credentials. We build the document, validate it, send it and record what comes back.
Oltrano