Look Up Any Dutch Business
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 companies.

Get started free Read the docs

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
}

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.

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.

Save up to 53%

Free

€0 /month

50 tokens/month
Enriched company data
VAT/VIES validation
Widget
10 req/min
Upgrade for more tokens
Priority support

Get started free

Starter

€9 /month

€108/year

1.000 tokens/month
Enriched company data
VAT/VIES validation
Widget
60 req/min
Upgrade for more tokens
Priority support

Start now

Pro

€29 /month

€348/year

5.000 tokens/month
Enriched company data
VAT/VIES validation
Widget
300 req/min
Extra tokens on request
Priority support