Official validation rules
Every file is checked with the KoSIT validator and Mustangproject — the same tools used by public-sector buyers and invoice recipients in Germany.
German e-invoicing mandate (§ 14 UStG): receiving since 2025, sending from 2027
Validate, understand and automate German e-invoices
Check XRechnung and ZUGFeRD files for free with the official KoSIT validator, get plain-language fixes and view every invoice as a readable document — no sign-up, no storage.
- Official KoSIT validator
- XRechnung 3.0 & ZUGFeRD 2.x
- In-memory processing only
- No cookies, no tracking
Free validator
Check XRechnung and ZUGFeRD in seconds
Upload an XML file or a hybrid ZUGFeRD PDF. We validate it against the official rules for XRechnung 3.0 and EN 16931 and show you the invoice as a clear, readable document.
Why BelegBridge
Compliance without the guesswork
From your first upload to fully automated invoicing: clear results instead of cryptic error codes.
Errors explained in plain language
We turn rules such as BR-DE-15 or BR-CO-15 into clear, actionable fixes — in English or German.
Readable invoice view
Structured XML invoices become a clear document with all mandatory details, the VAT breakdown and a PDF download.
How it works
The automated e-invoicing bridge
Invoices from the tools you already use become compliant German e-invoices automatically — no need to switch your billing system.
Early access – launching soon-
Connect Stripe, PayPal or email
Connect your payment or billing system via webhook, or simply forward invoice PDFs by email.
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Auto-enrich and embed ZUGFeRD
We add missing mandatory details such as your VAT ID, contact person and IBAN from your verified seller profile and embed the invoice as ZUGFeRD 2.3 in a PDF/A-3 — entirely in memory.
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Validate with KoSIT and deliver automatically
Every invoice is checked with the KoSIT validator before sending and then delivered automatically to your customer and to your DATEV inbox.
Pricing
Transparent plans for the automated bridge
Licensed per seller tax ID. The validator stays free forever.
Starter
For freelancers and solo businesses with one tax number.
€190/ year
equals €15.83 per month · 2 months free
€19/ month
billed monthly
- 1 Stripe or PayPal webhook
- Email-to-ZUGFeRD bridge
- Automatic forwarding to DATEV
- KoSIT validation of every invoice before sending
Pro
For growing B2B companies, online shops and SaaS providers.
€490/ year
equals €40.83 per month · 2 months free
€49/ month
billed monthly
- Unlimited webhooks for one company
- REST API access
- Custom PDF/A-3 invoice branding
- Email bridge and DATEV forwarding
- KoSIT validation of every invoice before sending
Agency / Partner
For agencies, holdings and tax advisors (Steuerberater) with multiple clients.
€990/ year
equals €82.50 per month · 2 months free
€99/ month
billed monthly
- Multi-client dashboard
- Per-client DATEV routing
- White-label validator link for your clients
- REST API and unlimited webhooks
- KoSIT validation of every invoice before sending
Additional tax IDs: +€10 per month or +€100 per year
All prices exclude VAT. Quotas apply per calendar month — also on annual plans. Until launch, reserve your early-access spot with no obligation.
FAQ
Good to know
Is the validator really free?
Yes. Validating XRechnung and ZUGFeRD files is free and requires no sign-up. A fair-use limit on requests protects the service from abuse.
Do you store my invoices?
No. Uploaded files are processed in memory only, passed exclusively to our internal validation services and discarded right after the response. There is no database for invoice contents.
Which formats are supported?
XRechnung 3.0 in the UN/CEFACT CII and UBL 2.1 syntaxes (invoice and credit note) as well as ZUGFeRD 2.x and Factur-X — as XML or as a hybrid PDF/A-3 with embedded XML.
Why are ZUGFeRD MINIMUM and BASIC WL rejected?
These profiles contain no invoice line items and therefore do not meet the requirements for an e-invoice under § 14 UStG (German VAT Act). Use at least the EN 16931 (Comfort) profile or XRechnung.
When does the automated bridge launch?
The bridge is in early access. Join the list to get access first as a founding member — we will contact you personally before launch.
Ready for Germany's e-invoicing mandate?
Reserve your early-access spot for the automated bridge now — free and with no obligation.