is the supplier Spanish? found this on the web
By shaun king
20th Dec 2012 15:58
The CIF number is the Certificado de Identificación Fiscal number which is the Spanish VAT number which in part equates to a UK VAT number. The problem with Spain is that any business, however small, is required to register for VAT and companies can only trade with VAT registered businesses. A Spanish business is required to verify the VAT number of its' supplier and if the supplier doesn't have a VAT number the Spanish company is not allowed, under Spanish law, to trade with it. The probem is that the Spanish do not recognise the UK registration threshold and I know from experience there are only two options.
1) Register for UK VAT
2) Lose the client.
The Spanish company will not accept anything other than a valid VAT registration number.