A system and method for enhancing financial institution revenue through acceleration of debit processing are provided. The method includes modeling the processing of account debit transactions, identifying ways to accelerate the processing of the account debit transactions and accelerating the account debit transactions. In a further embodiment, account debit transaction processing is accelerated from beginning on what has traditionally been referred to as Day 0 to beginning on some day before Day 0. Finally, a method and system are provided to determine the impacts of accelerating the processing of account debit transactions.