How many basic copies do invoices have? And how are they used respectively?
The to-be-filled invoices have 4 basic copies, with the following use respectively: the first copy is the counterfoil that is kept by the issuing party for later check; the second copy is invoice copy that is the original document for payment or receipt of payment by the holder of the copy; the third copy is the recording copy that is the original document for accounting records of the issuing party; the fourth copy is the spare copy that is set aside by the issuing party for later use. The fix-amount invoices have 2 basic copies, with the left copy as invoice copy that is the original document for payment or receipt of payment by the holder of the copy, and the right copy as the counterfoil that is kept by the issuing party for later check.
