Data sources
Last updated 2026-10-27
EInvoicePrivate is not affiliated with, endorsed by or operated by the European Commission, KoSIT, the Agenzia delle Entrate or any other government agency. It is an independent product that checks invoice files against published official standards and rule files and links to official pages for the legal background. The standards and rules in the first table are also listed in the EInvoice Private app under Settings, Data sources, and in its store listings. Each link was opened and checked on 2026-10-27.
Standards and rules behind the checks
| What we use | Official source |
|---|---|
| European e-invoicing standard EN 16931 and its validation artefacts (the business rules for UBL and CII invoices) | European Commission, eInvoicing; rule files: EN 16931 validation artefacts |
| XRechnung standard and its Schematron rules (German national rules, BR-DE-…) | KoSIT (Koordinierungsstelle für IT-Standards, Germany), XRechnung |
| FatturaPA format of Italian e-invoices and the SdI rules | Italian tax authority (Agenzia delle Entrate), FatturaPA format and e-invoicing guides |
| Trusted lists for the check of signed .p7m files | European Commission, eIDAS Trusted List browser |
The licence of each rule file and library is on the credits and licences page.
Legal background in the guides
| Country | Official pages |
|---|---|
| Germany | Umsatzsteuergesetz on gesetze-im-internet.de: § 14, § 19, § 27; Umsatzsteuer-Durchführungsverordnung § 33 and § 34a |
| France | service-public.fr: e-invoicing news and guide |
| Italy | Agenzia delle Entrate: invoice guide, December 2025, stamp duty on e-invoices, esterometro guide |
| Netherlands | Rijksoverheid: cabinet decision on e-invoicing and reporting, 11 September 2026 |
| Switzerland | KMU-Portal (Federal administration): QR-bill and eBill |
Not government data
ZUGFeRD and Factur-X profile names come from the industry associations FeRD and FNFE-MPE; UBL schemas from OASIS; CII schemas from UN/CEFACT. See the credits.
EInvoicePrivate checks format and the published business rules. It is not tax, legal or accounting advice. For your own case, ask a tax adviser or use the official pages above.