▣ DATA VALIDATION · FINANCE

VAT Company Lookup API

Hosted on ApyHub

What it does

The VAT Lookup API turns a VAT number into a company. Send the number with its country prefix, get back the registered name, the registered address, the country code, and whether the number is valid.

This is what an invoice needs. In most EU countries a compliant B2B invoice has to carry the customer's registered legal name and address, not the trading name they typed into your signup form. Pull them from the number and the invoice is right the first time.

It also catches the mismatch worth catching. When the returned company name looks nothing like the account name in front of you, someone has entered a VAT number that is not theirs. That is worth a flag in onboarding, before the reverse charge gets applied to the wrong entity.

Three places it fits: B2B signup, supplier onboarding, and invoice generation. Prefill the fields, keep the record, move on.

Only need a yes or no? The Validate EU VAT API is the cheaper call. Checking a list? The Validate EU VAT Batch API takes up to 10 at a time. Need beneficial owners and filings as well? The Company KYB Lookup API goes deeper.

POST

Look up company info for a VAT number

https://api.eu.apyhub.com/apyhub/lookup-vat-company

QUICKSTART

GUIDE

Quickstart

Look up a company by VAT number using a simple JSON request.

curl -X POST "https://api.eu.apyhub.com/apyhub/lookup-vat-company" \
  -H "apy-token: $APY_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"vat":"NL862735944B01"}'

What you'll get back

Returns a JSON object with a data object. The data object can include name (string), valid (boolean), address (string), vat_number (string), and country_code (string).

{
  "data": {
    "name": "ACME GmbH",
    "valid": true,
    "address": "Musterstraße 1, 10115 Berlin",
    "vat_number": "345789108",
    "country_code": "DE"
  }
}

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API key

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About this endpoint

What it does

Looks up company information for a VAT number and returns a JSON object containing the result under data. The request sends a VAT number in the body, and the response includes the company details exposed by the output schema.

Request Body

Parameter	Type	Mandatory	Description
vat	String	Yes	VAT number including 2-letter country code prefix.

Response

Returns a JSON object with a data object field. The data object contains company information fields such as name, valid, address, vat_number, and country_code.

Parameter	Type	Mandatory	Description
data	Object	No	Company information object.
data.name	String	No	Company name.
data.valid	Boolean	No	Whether the VAT lookup is valid.
data.address	String	No	Company address.
data.vat_number	String	No	VAT number.
data.country_code	String	No	Country code associated with the VAT number.

▣ COMMON ERRORS

Errors any endpoint can return

400bad_request

Required parameter missing or malformed body.

401unauthorized

API key missing, revoked, or not authorized for this service.

429rate_limited

Your plan's per-second rate exceeded. Retry with exponential backoff.

503upstream_busy

Backend temporarily unavailable. Try again in a few seconds.

Similar APIs

Closest matches in the catalog based on this service.

CALLValidate EU VAT APIApyHub CALLCompany KYB Lookup APIQuadlem, LLC CALLValidate EU VAT Batch APIApyHub CALLUS Routing Number Lookup APIDosvak LLC

From the blog

Reads that touch this API.

EU VAT Number Validation API: Check Tax IDs Before You InvoiceSep 18, 2026 VAT Number Checker: How to Check and Validate an EU VAT NumberSep 18, 2026 Data Validation APIs: What Your Checks Actually ProveSep 8, 2026 Email Validation API: How It Works + 7 Options ComparedSep 24, 2026