A fee charged to Merchants by the processing bank.

AVS is a tool for merchants to reduce the risk associated with “card not present” transactions, such as mail order, telephone order or Internet transactions.

The Visa/Master Card member bank that establishes and maintains the merchant relationship and processes all merchant transactions.

A processing organization networked with others to exchange (clear and settle) electronic debit/credit transactions (no physical checks are actually presented to a bank). ACH transactions