District Office (DO) Now known as Area Offices - One of the major divisions of a region, usually a state.
Distributed Input System (DIS) The Distributed Input System (DIS) is the on-line realtime system that replaced the Directed Data Entry…
Disk Drive Refers to the physical hardware that holds a diskette or cartridge. The disk itself may be physically or…
Disk or Diskette Storage media for computer data. Disk refers to an individual platter constructed of a metal alloy which…
Discriminant Function (DIF) At the ECCs, tax returns are given a computer-generated score called DIF (Discriminant Function) score, which identifies…
Designated Payment Code (DPC) A payment designated by the taxpayer for a type of tax.
Deposit Ticket Tape Deposit ticket tapes produce listings that are used by the reconciliation function in RPS for balancing purposes.
Data Communication Processing System (DCPS) The DCPS is also referred to as the “front-end” processor, the “Traffic Cop”, or the…