Validation · API

VAT Validation

Verify an EU VAT number against VIES and return the registered company.

POST /v1/validate/vat

200 OK

{
  "vat_number": "DE811907980",
  "valid": true,
  "country_code": "DE",
  "company_name": "Google Germany GmbH"
}

Capabilities

Why teams use it

VIES verification

Checked live against the EU VIES registry.

Company details

Returns the registered name and address.

All EU member states

Full coverage for reverse-charge invoicing.

Real-time

Validate at checkout or onboarding.

Request

Call it in your language

curl -X POST https://api.locanium.com/v1/validate/vat \
  -H "Authorization: Bearer sk_live_..." \
  -H "Content-Type: application/json" \
  -d '{"vat_number":"DE811907980"}'

Response

What you get back

validboolean
Whether the VAT number is valid
country_codestring
ISO country code
company_namestring
Registered company (VIES)
addressstring
Registered address

Use cases

What you can build

B2B invoicing

Verify VAT numbers against VIES for reverse charge.

Onboarding

Auto-fill company name and address.

Tax compliance

Apply the correct VAT treatment.

Validation family

Email Validation Phone Validation IBAN Validation

Full parameters, errors and code samples are in the API reference.