Anonymous participant I think the reason they say "tax invoice" as apposed to just "invoice" is because in providing a tax invoice shows you're a legit/registered entity/business as these will have your company numbers and any tax details on, whereas an invoice could be given by anyone and not give as much detail..
Anonymous participant yeah that's what they are after, as long as it's the legal format in your country for invoicing and shows any VAT info. If I were you id give just a select few that cover that date range, not all of them.
A tax invoice is a document that has been legally recognised by the relevant government authority. It has also been issued by an authorised dealer to a purchaser. It will show the tax amount payable for the exchange of any goods or services.
Whereas an invoice is a document that is issued from a buyer to a seller that shows the amount due for the goods and services that have been exchanged.