Every EU member state is mandating structured e-invoicing on its own timeline and in its own format — all built on the EN 16931 European standard. Pick a country for the deadlines, formats and what to validate.
B2B e-invoicing receipt + issuance and e-reporting
Factur-X · UBL 2.1 · UN/CEFACT CII
B2B receive (2025) then issue, phased by company size
XRechnung · ZUGFeRD · UBL 2.1 · UN/CEFACT CII
B2B mandatory via Peppol
Peppol BIS Billing 3.0 · UBL 2.1
B2B mandatory via the national KSeF platform
FA(3) structured XML · UBL 2.1 (cross-border)
B2B + B2C mandatory via SdI
FatturaPA · UBL 2.1 (interoperability)
B2B mandatory via RO e-Factura
RO e-Factura (UBL / CIUS-RO) · UBL 2.1
B2B mandatory under the Crea y Crece law
Facturae · UBL 2.1 · UN/CEFACT CII
Most national formats are profiles of EN 16931. Validate the European core rules now and reuse it across every country — paste an invoice into the playground or get a free API key.