Abstract: Disclosed are various embodiments for predicting and customizing round-ups for various types of transaction. First, a computing device can access adjustment criteria for a user profile. The computing device can then generate an event listener configured to monitor events made in association with the user profile. When events are accessible by the event listener, the events are filtered or otherwise analyzed to identify a subset of the events that comply with the adjustment criteria. Individual ones of the events in the subset are adjusted by performing a round-up operation. The round-up operation can include adjusting a transaction amount by a predetermined amount and depositing the predetermined amount into the destination account.