GB VAT check
GET /v1/check/vat normalises a GB VAT number and runs the published HMRC checksum (including government-style GD and HA numbers). It returns valid: true or false and a normalised GB… string.
This is not a live HMRC register lookup. A passing checksum does not prove the number is currently registered or active.
Try it
https://fetch.li/v1/check/vat?number=GB100000059
Parameters
| Parameter | Required | Description |
|---|---|---|
number |
Yes | GB VAT number, with or without the GB prefix |
Demo
GET endpoints work without an API key on the public demo tier (60 calls per hour per IP).
Try it
GET https://fetch.li/v1/check/vat
Answer
Response