Pricing
Start free. Scale when it counts.
The validator is always free and needs no account. For generating German e-invoices (ZUGFeRD / Factur-X / XRechnung) via the hosted MCP server and REST API, pay per generated invoice or pick a predictable monthly plan.
Free
Check existing files without creating an account.
- Unlimited invoice validation
- Technical e-invoice checks
- PDF/A compliance check
- No account required
Pay as you go
Best for low or spiky generation volume.
- Metered generation billing
- No monthly minimum
- MCP server access
- REST API
- PDF + CII XML output
- Scoped API keys
Starter
Best for predictable recurring invoice volume.
- 500 invoices included
- €0.05 per extra invoice
- MCP + REST API
- Team API keys
- Usage overview
Business
Best for higher-volume teams and automation workflows.
- 2,500 invoices included
- €0.03 per extra invoice
- MCP + REST API
- Team API keys
- Priority onboarding
Subscription and metered billing are both available for testing. Signup creates an API key; subscription checkout starts payment for the included monthly volume. See what gets checked.
What the price covers — and what it does not
Every generated invoice runs through the same technical KoSIT-accept gate as the free validator: PDF/A structure, EN 16931 XSD, the EN 16931 business rules (Schematron) for ZUGFeRD/Factur-X and the official KoSIT validator. There is no cheaper tier that skips this check — the gate is the product.
fakturai enforces technical format conformity. It does not replace tax advice or bookkeeping and makes no promise about content correctness or legal consequences.
Next step: validate an existing invoice for free or read the API & MCP docs.