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API Documentation

REST API · No Auth Required · Free

EU VAT Validation API

Validate EU VAT numbers programmatically against the official VIES database. Free to use, no API key, CORS enabled.

Free

No API key or account needed

10 / batch

Validate up to 10 numbers at once

27 Countries

All EU member states supported

Base URL

https://vat.businesspress.io

All endpoints are relative to this base URL. Use HTTPS in production.

Endpoints

POST /api/vat/validation/validate

Validate a single EU VAT number in real-time against the VIES database. Results are cached for 7 days for performance.

Request Body

Parameter	Type	Required	Description
`country_code`	string	required	2-letter ISO code (e.g. `LT`, `DE`). Greece uses `EL`.
`vat_number`	string	required	VAT number without the country prefix (e.g. `100019070512` not `LT100019070512`).
`company_name`	string	optional	Expected company name for fuzzy matching verification.
`address`	string	optional	Expected address for additional verification.

Example Request

curl -X POST https://vat.businesspress.io/api/vat/validation/validate \

-H "Content-Type: application/json" \

-d '

{

"country_code": "LT",

"vat_number": "100019070512"

Example Response

{
  "success": true,
  "data": {
    "valid": true,
    "country_code": "LT",
    "vat_number": "100019070512",
    "name": "UAB Company Name",
    "address": "Vilnius, Lithuania",
    "source": "vies",
    "request_identifier": "..."
  }
}

POST /api/vat/validation/batch max 10

Validate up to 10 VAT numbers in a single request. Each number is validated independently against VIES.

Example Request

{
  "validations": [
    {
      "country_code": "LT",
      "vat_number": "100019070512"
    },
    {
      "country_code": "DE",
      "vat_number": "129274202"
    }
  ]
}

Example Response

{
  "success": true,
  "total": 2,
  "data": [
    {
      "valid": true,
      "country_code": "LT",
      "vat_number": "100019070512",
      "name": "UAB ...",
      ...
    },
    { ... }
  ]
}

GET /api/vat/validation/health

Check the operational status of the VAT validation service.

{
  "status": "operational",
  "service": "VAT VIES Validation API",
  "timestamp": "2026-04-07T10:00:00+00:00"
}

Interactive Playground

country_code

vat_number

Batch demo will validate the above number + a static DE example to show the multi-result response format.

POST

// Response will appear here after you click Send Request

Sending request to VIES…

200 OK

Error

Response Fields

Field	Type	Description
`success`	boolean	Always `true` for 200 responses.
`data.valid`	boolean	Whether the VAT number is currently active in VIES.
`data.country_code`	string	ISO 2-letter country code echoed back.
`data.vat_number`	string	The VAT number as validated (without prefix).
`data.name`	string\|null	Company name returned by VIES. May be `N/A` if withheld by country.
`data.address`	string\|null	Registered address. May be withheld by some countries.
`data.source`	string	`vies` (live lookup), `cache`, or `database` (cached result).
`data.request_identifier`	string\|null	VIES consultation reference number for audit purposes.

Error Responses

HTTP Status	When
422	Validation failed — missing or invalid `country_code` or `vat_number`. Check the `errors` field in the response.
429	Too many requests — fair-use rate limit reached. Retry after a brief pause.
503	The upstream VIES system is temporarily unavailable. Check ec.europa.eu/taxation_customs/vies for status.

Code Examples

curl -X POST https://vat.businesspress.io/api/vat/validation/validate \
  -H "Content-Type: application/json" \
  -d '{"country_code":"LT","vat_number":"100019070512"}'

const response = await fetch('https://vat.businesspress.io/api/vat/validation/validate', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    country_code: 'LT',
    vat_number: '100019070512'
  })
});
const data = await response.json();
console.log(data.data.valid); // true

$response = Http::post('https://vat.businesspress.io/api/vat/validation/validate', [
    'country_code' => 'LT',
    'vat_number'  => '100019070512',
]);

$data = $response->json('data');
$isValid = $data['valid']; // true

import requests

res = requests.post(
    "https://vat.businesspress.io/api/vat/validation/validate",
    json={"country_code": "LT", "vat_number": "100019070512"}
)
data = res.json()["data"]
print(data["valid"])  # True

Quick Reference

POST /api/vat/validation/validate

POST /api/vat/validation/batch

GET /api/vat/validation/health

VAT Rates JSON API

Need VAT rates (not validation)? Use our rates API.

GET /api/countries

Open API

VAT Number Validator (UI) MCP Server (AI Integration) All VAT Tools