§Countersure

§ BULK VERIFY

Hundreds of suppliers,
one upload.

Drop in a CSV. Countersure runs each number against HMRC live, returns a stamped result CSV. Up to 100 rows on the free plan; upgrade for higher batch limits.

§ OPTION A — UPLOAD

CSV up to 100 rows.

§ OPTION B — PASTE

No data yet

§ CSV FORMAT

Single column. One VAT number per row. Header optional (we accept vat_number, vat, or number).

vat_number
GB123456789
GB987654321
GB555666777

Need it in your software?

The Countersure API does the same thing in JSON, with webhooks for ongoing monitoring.

SEE THE API →