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Validation of UK VAT Number
Thanks Ron.
I'll sleep easy tonight. -- Russell Dawson Excel Student Please hit "Yes" if this post was helpful. "Ron Rosenfeld" wrote: On Sat, 17 Apr 2010 23:39:01 -0700, Russell Dawson wrote: That's fine. It tells you the format i.e. 9 or 12 digits and the 3-4-2 format is no secret. It couldn't be as all businesses have to display it in invoices etc. What it doesn't give is the series of calculations apparently used to create what might appear to be a VAT number to anybody duped into accepting that number, first by it's issue and then confirmed as being valid via the sites you mentioned. I suspect that the validation site would only be using the appropriate calculation to validate the number as a possible VAT number because it passes the arithmetical test rather than check if the number has been issued and therefore a true VAT registration number. I'd be interested to know why Rob needs to do this. The Modulus 97 algorithm is not secret. See http://sima.cat/nif.php But I don't know if the new modulus 9755 algorithm, which is supposed to be being implemented in GB this year to increase the range of allowable VAT numbers, is secret or not. Certainly it can be obtained with a legitimate business reason. --ron . |
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