comments:What is a valid tax invoice? Part 1
In theory, tax invoices, which are mostly produced by computer nowadays, should all comply with the law and should be easily recognisable. In practice, the infinite variety of layout on invoices complicates matters. If your business receives a substantial volume of invoices, you are bound to be at risk for amounts big enough to lead to possible penalties.The sheer volume of transactions means there is a risk of documents slipping through, which are not tax invoices.