Downline Load The transfer of a program or data file from a control computer (master node) to a remote computer.
Document Code (DOC Code) The code which identifies the specific type of return or document that was filed or processed.…
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.