Company Data for the Netherlands
and Belgium, Instantly
Auto-fill KVK data, addresses, and VAT numbers with our API or drop-in widget. Includes EU-wide VAT/VIES validation. Built for developers and businesses that work with Dutch and Belgian companies.
Widget
Add a KVK lookup field to any form with one script tag. No coding required.
API
One endpoint for KVK data, address, VAT validation, and trade names. REST, JSON, done.
GET /v1/lookup/12345678
200 OK
{
"name": "Bakkerij De Windmolen B.V.",
"address": {
"city": "Amsterdam"
},
"vatValid": true
}Belgium too
The same API, key and token balance for Belgian companies: look up by enterprise number, search by name and postcode, and get a VAT number that is derived and checked in VIES.
Belgian company data API
Endpoints, a sample response and pricing for Belgium (in Dutch).
Enterprise number lookup
Check a number instantly and open the company (Dutch).
Belgian VAT number check
Structure, check digits and VIES status (Dutch).
Version française
API de données d'entreprises belges, numéro d'entreprise et TVA.
Why KVKBase?
One API call
KVK data, address, VAT number, and VIES validation. No more juggling separate services.
Drop-in widget
Add a KVK lookup field to any form with one script tag. Works with Shopify, WordPress, or your own site. No coding required.
Fast and reliable
Runs on Cloudflare's edge network. Sub-50ms response times with built-in caching.
Free to start
50 free tokens per month. Only pay when you grow.
Always up-to-date
Data straight from the Dutch Chamber of Commerce (KVK) and EU VIES. Automatic fallbacks on outages. Want to follow changes? See company monitoring.
Great documentation
Clear docs, code examples, and a quick start guide. Built by developers, for everyone.
Simple, transparent pricing
No commitments. Upgrade or downgrade whenever you want.
Free
- 50 tokens/month
- Enriched company data
- VAT/VIES validation
- Widget
- Company monitoring
- 10 req/min
- Upgrade for more tokens
- Priority support
Starter
- 1.000 tokens/month
- Enriched company data
- VAT/VIES validation
- Widget
- Monitor 10 companies
- 60 req/min
- Upgrade for more tokens
- Priority support
Pro
- 5.000 tokens/month
- Enriched company data
- VAT/VIES validation
- Widget
- Monitor 100 companies
- 300 req/min
- Extra tokens on request
- Priority support
Business
- 50.000 tokens/month
- Enriched company data
- VAT/VIES validation
- Widget
- Monitor 1,000 companies
- 1.000 req/min
- Bulk enrichment of entire files
- Priority support
All prices exclude VAT.
Ready to get started?
Start free. No credit card required. Upgrade whenever you want.
Create a free account