A method to facilitate invoicing for transactions established utilizing a network-based transaction system includes supporting establishment of transactions between a plurality of entities in the network-based transaction system, and identifying as part of an invoice generation process, a plurality of transactions to which a first entity is a party. The method further includes identifying first and second transactions from the plurality of transactions that satisfy combinable criteria, and generating an invoice for at least the first and second transactions that satisfy the combinable criteria. The method can also be implemented in a system and on a machine-readable medium.