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Documentation overview
Glossary
E
EN 16931
E-reporting
e-Factura RO
EAS (Electronic Address Scheme)
ebInterface
C
CIUS
CII
Code list
Credit note
Contract reference
Chorus Pro
Codice Destinatario
X
XRechnung
XML Schema (XSD)
XML
Z
ZUGFeRD
F
Factur-X
Finvoice
U
UBL
Unit code
P
PEPPOL
PEPPOL BIS
Participant ID
PDF/A-3
Payment means
Purchase order (PO)
PDP (Plateforme de Dématérialisation Partenaire)
A
Access Point
Allowance / charge
S
SMP
SML
Schematron
SDI (Sistema di Interscambio)
Svefaktura
L
Leitweg-ID
K
KoSIT
KSeF
KvK number
V
Validation
VAT ID
ViDA
VeriFactu
ViDA Pillar 1: Digital Reporting Requirements
ViDA Pillar 2: Single VAT Registration
ViDA Pillar 3: Platform Economy
B
Business Term (BT)
Business Group (BG)
BIC
R
Reverse charge
Real-time reporting
Real-time invoice reporting (RTIR)
T
Tax category
TicketBAI
I
IBAN
Invoice type code
Invoice line item
ISO 6523
D
Document reference
D-U-N-S Number
Digipoort
Q
QR code payment
G
GLN (Global Location Number)
O
OVT-tunnus
OIOUBL
N
NemHandel
Code Lists
XRechnung Fields
ZUGFeRD Profiles
  3. E-Invoicing Resources
  5. Glossary
  7. KSeF

Reference

KSeF

Krajowy System e-Faktur — the Polish national e-invoicing platform mandatory for most B2B from February 2026.

DefinitionExplanationRelated resourcesRelated terms

Definition#

Krajowy System e-Faktur — the Polish national e-invoicing platform mandatory for most B2B from February 2026.

Explanation#

Uses the FA(2) XML structured invoice schema; KSeF assigns a unique invoice number and timestamp on acceptance.

Mandatory rollout: February 2026 for taxpayers above PLN 200M turnover, April 2026 for the rest, with ViDA-aligned EN 16931 mapping under discussion.

Related resources#

Poland e-invoicing guide

Related terms#

E-reporting

Digital reporting of transaction data to tax authorities, often alongside e-invoicing.

ViDA

VAT in the Digital Age: EU initiative driving e-invoicing and digital reporting requirements.

Real-time reporting

Reporting transaction data shortly after issuance, often mandated by tax regimes.

SDI (Sistema di Interscambio)VeriFactu
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DefinitionExplanationRelated resourcesRelated terms

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