These templates cover many different types of payment as well as specific timeframes in which payment must be made. Payment invoices help the client understand what the payment is for, how they can make the payment, and upon which date payment is due. Collecting money can be a sensitive and difficult task at times, and a payment invoice can help make the situation easier for both collector and debtor. A general payment invoice is provided here as well if the collector is unsure of which template would best suit their needs.