{
"input": "IT00743110157",
"vat": "IT00743110157",
"valid": true,
"country_code": "IT",
"country_name": "Italy",
"country_supported": true,
"format_valid": true,
"checksum": "verified",
"checksum_supported": true,
"vies_checked": false,
"problems": [],
"note": "Offline format and check-digit validation. The number is internally consistent, but this does not prove the business is VAT-registered — that requires a live VIES lookup, which is not performed."
}
curl --location --request POST 'https://zylalabs.com/api/13852/eu+uk+vat+number+validator+api/31849/validate+vat+number' --header 'Authorization: Bearer YOUR_API_KEY'
--data-raw '{"vat":"IT00743110157"}'
After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the EU UK VAT Number Validator API simply include your bearer token in the Authorization header.
| Header | Description |
|---|---|
Authorization
|
Required
Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.
|
No long-term commitment. Upgrade, downgrade, or cancel anytime. Free Trial includes up to 50 requests.
Validate EU and UK VAT numbers with format checks, national check digits, and clear verification results.
The Validate VAT Number endpoint returns data regarding the validity of a VAT number, including its format, checksum verification, and country details. It provides information on whether the VAT number is valid, the country of origin, and any issues detected during validation.
Key fields in the response include "input" (the VAT number submitted), "valid" (boolean indicating validity), "country_code" (ISO code of the country), "format_valid" (indicates if the format is correct), and "problems" (any issues found during validation).
The response data is structured in a JSON format, containing key-value pairs. Each key represents a specific aspect of the VAT validation, such as validity status, country information, and any validation issues, making it easy to parse and utilize programmatically.
The endpoint provides information on VAT number validity, format checks, checksum verification, and country details. It also indicates if the number has been checked against VIES and lists any problems found during validation.
Data accuracy is maintained through rigorous format checks and checksum validation. While the API performs offline checks, it notes that a live VIES lookup is necessary for confirming business VAT registration, ensuring users are aware of the limitations.
Typical use cases include verifying VAT numbers for invoicing, ensuring compliance with tax regulations, and preventing fraud in business transactions. Businesses can use this data to validate customer VAT numbers before processing orders.
Users can utilize the returned data by checking the "valid" field to confirm VAT number legitimacy. They can also review "problems" for any issues and use "country_code" and "country_name" for regional compliance in their operations.
Standard data patterns include a boolean "valid" field indicating true or false, a "format_valid" field that confirms the VAT number's structure, and a "problems" array that may be empty or contain specific issues, providing clear insights into the validation results.
To obtain your API key, first sign in to your account and navigate to the API you want to use. From the API's Pricing section, choose a plan and complete the subscription process. Once subscribed, return to the API page and you will see your API Access Key displayed at the top of the documentation page. You can use this key to authenticate your requests.
You can’t switch APIs during the free trial. If you subscribe to a different API, your trial will end and the new subscription will start as a paid plan.
The free trial lasts for 7 days and allows you to make up to 50 API requests.
No, the free trial is available only once, so we recommend using it on the API that interests you the most. Most of our APIs offer a free trial, but some may not include this option.
Yes. If the API offers a free trial, you will see a "Free 7-Day Trial" option in its Pricing section. The trial lasts for 7 days and allows up to 50 API requests, enabling you to evaluate the API before subscribing to a paid plan.
Zyla API Hub is like a big store for APIs, where you can find thousands of them all in one place. We also offer dedicated support and real-time monitoring of all APIs. Once you sign up, you can pick and choose which APIs you want to use. Just remember, each API needs its own subscription. But if you subscribe to multiple ones, you'll use the same key for all of them, making things easier for you.
You can monitor your API usage through the response headers included with every request:
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