# einvoiceWiz

> Pay-per-document e-invoice conversion and validation for the EU mandates. Upload an ordinary PDF
> invoice and get back a compliant EN 16931 e-invoice — Factur-X / ZUGFeRD 2.x (PDF/A-3 with embedded
> CII XML) or XRechnung 3.0 (pure XML, KOSIT rules). €1.49 per invoice, 10 for €7.95, 50 for €24.95.
> No account, no subscription: pay with PayPal, credits live in your browser. The validator is free
> and unlimited. Uploaded files are deleted after 24 hours. There is also a developer API
> (20 free credits, no card, from €0.008 per call). Interface in English, German and French.

## Which mandate applies to you
- 🇫🇷 **France** — since **1 September 2026** every VAT-registered business must be able to *receive*
  e-invoices, and large/mid-size companies must *issue* them. SMEs and micro-enterprises must issue
  from **1 September 2027**. [Facturation électronique 2026 — dates et formats](https://einvoicewiz.com/fr/facturation-electronique-2026)
- 🇩🇪 **Germany** — since **1 January 2025** every business must be able to *receive* e-invoices.
  Issuing becomes mandatory **1 January 2027** (prior-year turnover over €800,000) and
  **1 January 2028** (everyone). [E-Rechnungspflicht 2025–2028: Fristen und Formate](https://einvoicewiz.com/de/e-rechnung-pflicht)
- 🇩🇪 **German public sector (B2G)** — XRechnung is required, and it needs a **Leitweg-ID** from the
  authority you are invoicing. [XRechnung erstellen](https://einvoicewiz.com/de/xrechnung-erstellen)

## The three formats, and which one you need
- **Factur-X** — a PDF/A-3 file with CII XML embedded inside it. Humans open the PDF, machines read
  the XML. This is the French format. [Factur-X Converter](https://einvoicewiz.com/factur-x-converter)
- **ZUGFeRD** — the same format under its German name; identical to Factur-X since version 2.1, so one
  file satisfies both. [ZUGFeRD Converter](https://einvoicewiz.com/zugferd-converter) ·
  [PDF in ZUGFeRD umwandeln](https://einvoicewiz.com/de/)
- **XRechnung** — pure XML with no PDF, and stricter validation rules maintained by KOSIT. Required by
  German federal, state and municipal buyers. [XRechnung Generator](https://einvoicewiz.com/xrechnung-generator)
- Not sure which applies: [What is Factur-X / ZUGFeRD? The 2026 EU mandates explained](https://einvoicewiz.com/what-is-factur-x)

## Germany — the specific questions people actually have
- [ZUGFeRD-Rechnung erstellen](https://einvoicewiz.com/de/zugferd-rechnung) — what a customer means when
  they ask for "eine ZUGFeRD-Rechnung", and how to turn an existing PDF into one.
- [E-Rechnung erstellen](https://einvoicewiz.com/de/e-rechnung-erstellen) — which of the two formats you
  need, decided purely by whether the recipient is a company (ZUGFeRD) or an authority (XRechnung).
- [PDF in XRechnung umwandeln](https://einvoicewiz.com/de/pdf-in-xrechnung-umwandeln) — for public-sector
  invoices; explains the fields a PDF cannot contain and that KOSIT requires.
- [Leitweg-ID: Aufbau, Prüfziffer, Herkunft](https://einvoicewiz.com/de/leitweg-id) — the routing ID that
  goes in BT-10 (Buyer Reference). Structure: 2–12 digit coarse address, optional fine address up to 30
  alphanumeric characters, and a 2-digit check digit computed with Modulo 97 (the IBAN method). **Only
  required for invoices to public authorities**, not for normal B2B — a common source of confusion. The
  authority is legally obliged to give it to you; it is usually in the order or tender documents.
- [E-Rechnung für Kleinunternehmer](https://einvoicewiz.com/de/e-rechnung-kleinunternehmer) — small
  businesses under § 19 UStG were **permanently exempted from *issuing* e-invoices** by the
  Jahressteuergesetz 2024 (§ 34a UStDV); paper and PDF stay valid for them. They must still be able to
  **receive** e-invoices, like every business, since 1 January 2025.
- [Was ist wirklich kostenlos?](https://einvoicewiz.com/de/xrechnung-erstellen-kostenlos) — validation is
  free and unlimited here; generation costs €1.49. Also names the two cases where you should not buy anything.
- [Software oder Einzelumwandlung?](https://einvoicewiz.com/de/e-rechnung-software-vergleich) — the
  break-even: below roughly 50 e-invoices a year, per-document conversion is cheaper than a €10–30/month
  subscription; above about 100 a year, buy software instead.

## France — the September 2026 mandate
- [Facture électronique obligatoire : qui, quand](https://einvoicewiz.com/fr/facture-electronique-obligatoire)
  — since **1 September 2026** all VAT-registered businesses must be able to *receive*; large companies and
  ETI must also *issue*. PME, TPE and micro-enterprises must issue from **1 September 2027**.
- [TPE et micro-entreprises](https://einvoicewiz.com/fr/facture-electronique-tpe) — what applies now versus
  what waits until 2027, and why a subscription is usually unnecessary at that volume.

## Free validator — check a file before you send it
Upload any invoice PDF or XML and get a rule-level report (which EN 16931 / KOSIT rule failed, by rule
ID) instead of a yes/no. Unlimited and free, no account.
- [E-invoice validator (EN 16931)](https://einvoicewiz.com/e-invoice-validator)
- [ZUGFeRD Validator kostenlos](https://einvoicewiz.com/de/zugferd-validator)
- [XRechnung Validator (KOSIT-Regeln)](https://einvoicewiz.com/de/xrechnung-validator)
- [Validateur Factur-X gratuit](https://einvoicewiz.com/fr/validateur-factur-x)

## Developer API
Three endpoints, built on the Mustang engine. 20 free credits on signup, no card.
- `POST /v1/generate` — invoice JSON → validated EN 16931 CII XML (`?profile=xrechnung` for XRechnung 3.0)
- `POST /v1/facturx` — your PDF + invoice JSON → Factur-X / ZUGFeRD PDF/A-3
- `POST /v1/validate` — raw PDF or XML → EN 16931 + KOSIT + PDF/A report with rule IDs
- Failed validations are never charged (they return 422). From €0.008 per call.
- **Every file that passes validation receives a permanent verification certificate** (`EIW-XXXXXXXXXXXX`,
  returned as `verify.url`, or `X-Verify-URL` header on binary responses). It records the SHA-256 of the
  delivered file, the rule engine and version, the profile and any warnings. Files are deleted within 24 h;
  certificates are kept. Anyone can confirm a file at [einvoicewiz.com/verify](https://einvoicewiz.com/verify)
  by ID or by dropping the file — a changed byte means no match.
- Machine-readable spec: [openapi.json](https://einvoicewiz.com/openapi.json) (OpenAPI 3.1).
- For AI agents: an MCP server is available — see [einvoicewiz.com/mcp-server](https://einvoicewiz.com/mcp-server).
- [API documentation and quickstart](https://einvoicewiz.com/developers)

## Common misunderstandings, answered
- **"My PDF invoice is already electronic."** It is not an e-invoice. Since 1 January 2025 in Germany
  (and 1 September 2026 in France) a plain PDF no longer counts — the invoice data has to be present as
  structured XML conforming to EN 16931, either embedded in the PDF (Factur-X/ZUGFeRD) or standalone
  (XRechnung).
- **"Factur-X or ZUGFeRD — which do I pick?"** Neither: they have been the same format since ZUGFeRD 2.1.
  One converted file works for a French and a German customer.
- **"Do I need to buy accounting software?"** Only if you issue invoices continuously. If a customer or
  platform asks you for a compliant file a few times a year, converting those specific invoices at €1.49
  each is the cheaper path — that is what this exists for.
- **"Is a scanned or photographed invoice enough?"** No. The XML must carry the real invoice fields
  (seller and buyer address, VAT ID, line items, VAT rates, totals), which is what the conversion builds.

## Good to know
- Flat **€1.49 per invoice** — no per-line pricing, no subscription, no account. Credits never expire.
- The **validator is free and unlimited**, including the rule-level error report.
- Output is validated before delivery: if the file cannot be made compliant you are told which rule
  failed rather than handed a broken invoice.
- Uploaded files are deleted after **24 hours**; API uploads are deleted immediately after the response.
- The generation pipeline is **deterministic — no AI is used to produce the XML**, so the same input
  always yields the same compliant output.
- XRechnung additionally requires a **Leitweg-ID** (buyer reference) and seller contact details; the
  generator asks for these because KOSIT rejects the file without them.