National Automated Clearing House Association (NACHA): The national association that establishes the standards, rules and procedures that enable depository financial institutions to exchange ACH payments on a national basis.

Negative File: A collection of records (cardholder accounts) containing all accounts on which charge privileges have been revoked and/or require a voice authorization.

Net Payment: Payment to the merchant for sales drafts less credits minus the appropriate discount fee.

Net Revenue: Discount income less interchange expense.

Net Settlement: The settlement, through an actual transfer of funds, of the net effect of a series of financial transactions involving customers of two or more banks.

Network: Computers that are connected together.

Network Service Provider: A terminal-centered system that allows the merchant to obtain authorization and/or data captured through the network. A third party vendor who provides authorization network services such as Banknet, VISANet, and NDC.

No Show: A charge processed by a hotel or motel when a cardholder fails to arrive within a specified time or fails to cancel the guaranteed reservation within a specified period. The words 'no-show' must be written on the signature line of the
sales draft.

Node: The network telecommunication access point which can be accessed by the terminal dialing a 'local' telephone number, or a toll-free '950' or '800' telephone number for authorization.

Non Delivery Risk (NDX): A processed and cleared transaction charged to a cardholder's account for full or partial payment for a product/service in advance of delivery/receipt of the product/service to the cardholder.

Non Face-to-Face Transaction: Any transaction where the card is not presented, such as a mail order purchase.

Non-Bank: In a payment system, a financial institution not offering retail banking services.