Giltiq - VAT Validation API

Validate EU VAT IDs with confidence. Multi-source reliability, developer-first JSON API, BZSt qualified confirmations.

Why Giltiq?

Always-On Reliability

Automatic failover between VIES and BZSt ensures your validations always go through. Smart caching reduces latency and keeps responses flowing even during upstream outages.

BZSt Qualified Confirmations

Get legally binding qualified confirmations from the German Federal Tax Office for cross-border compliance.

Developer First

Clean JSON API, comprehensive docs, SDKs for Node.js and Python. Get started in minutes.

Made in Germany

Hosted on German infrastructure, built by a German team. Your validation data never leaves Germany — full GDPR compliance by design.

Quick Example

curl https://api.giltiq.de/v1/validate/DE811575812 \
  -H "X-API-Key: gq_live_your_key_here"

{
  "valid": true,
  "vat_id": "DE811575812",
  "company_name": "SAP SE",
  "company_address": "Dietmar-Hopp-Allee 16, 69190 Walldorf",
  "source": "vies",
  "cache": false
}

Free Tier

100 validations per month, no credit card required. Sign up now.