A group including plurality of users is established. A transaction record is maintained for the group that includes a plurality of payment transactions. Each of the plurality of payment transactions involves at least one user of the group. Additionally, a balance is maintained that indicates an amount owed by a first user of the group to a second user of the group based on one or more of the plurality of payment transactions. When a settling event occurs, the balance is settled by initiating a transfer of funds between the first user and the second user.