Step 2 of 4 · ProjectsAPIs
kaltblut
Java library for handling ZUGFeRD e-invoices.
What it does
Java toolkit for ZUGFeRD and Factur-X hybrid invoices: detects a PDF's flavour and profile, extracts the embedded XML and attachments, and validates the carrier-side rules including PDF/A-3 conformance. Java 17 or higher, Maven, PDFBox 3; veraPDF optional. It does not create hybrid PDFs or check the XML business rules (see phive-rules-zugferd); v0.9.6 is marked work in progress; Apache 2.0.
Where it fits on the map
Similar projects
Of the same kind, for a shared jurisdiction or tax area. Not a ranking.
- aade-mydataPHP client for Greece's AADE myDATA invoicing API: send, cancel and retrieve invoices.
- BelgiumVatChecker.NET Web API that validates Belgian and EU VAT numbers using the VIES service.
- BrevJVM library to write and read Peppol BIS Billing 3.0 invoices and credit notes, with Norwegian identifiers.
- cbam-apiGo API on the EU Carbon Border Adjustment Mechanism (CBAM) data model.
- chinaport-data-signatureSigns China E-Port customs messages (CEB, 179 data) for cross-border e-commerce declarations.
- commerceguys/taxPHP tax library for commerce applications: tax types, zones and rates.
Maintain this project?
Link to this page from your README, so readers find the facts, the notes and where it fits. The badge is a small SVG served from this site.
[](https://tax-oss.com/projects/kaltblut/)