UK VAT Unique Invoice Number

devcore

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Joined
Aug 9, 2018
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#1
I've recently registered for VAT and I'm not sure if I've been numbering my invoices correctly. I don't have many clients and I simply run a sequential count so it would be invoice #01...#02..#03. Every new client has their own sequence starting from #01 although I don't have a specific client identifier on the invoice number so it could be that I end up with invoice #01 for client A and also client B.

Is this correct/acceptable or should I make sure numbers are unique for every client?