A current listing of abbreviations/acronyms can now be found on the MITS web site. The abbreviations/acronyms below only refer to the data and text in this document. For command codes, refer to http://bbs.is.irs.gov
| Acronyms | Definition | ||
| 23C | Assessment Date; Master File Notice Date | ||
| A/R | Accounts Receivable | ||
| AAC | Automated Accounting System also AIMS Assignee Code | ||
| AAV | Accountability Acceptance Voucher | ||
| ABC | Alpha Block Control | ||
| ABIS | Audit Base Inventory System | ||
| ABS | Abstract (Number) | ||
| ACA | Affordable Care Act | ||
| ACD | Automated Call Distribution/Distributor (CADE) | ||
| ACI | Assistant Commissioner International | ||
| ACIS | AIMS Computer Information System | ||
| ACL | Access Control List (CADE) | ||
| ACS | Automated Collection System | ||
| ACTC | Advance Child Tax Credit | ||
| ACTRFR | GMF Account Transfers-In (BMF/IMF) | ||
| ADCS | Automated Document Control System | ||
| ADDAPT | Alternative DIF Delivery and Planning Tool | ||
| ADH | Automated Document Handling | ||
| ADJ | Adjustment | ||
| ADP | Automatic Data Processing | ||
| ADR | Advance Dated Remittances | ||
| ADSI | Action Delete Status Indicator | ||
| AEIC | Advanced Earned Income Credit | ||
| AES | Automated Examination System | ||
| AGI | Adjusted Gross Income | ||
| AICS | Automated Inventory Control System | ||
| AIIS | Automated Issues Identification System | ||
| AIMF | Audit Information Management File | ||
| AIMS | Audit Information Management System | ||
| AIS | Automated Insolvency System | ||
| AM | Accounts Maintenance | ||
| AMA | Accounts Maintenance Automation | ||
| AMS | Audit Management System | ||
| AMIR | Audit Management Information Reports | ||
| AMIS | Adjustment Management Information System | ||
| AMRH | Accounts Maintenance Research | ||
| AMTAP | Accounts Management Taxpayer Assurance Program | ||
| ANMF | Automated Non-Master File | ||
| AO | Area Office | ||
| AOIC | Automated Offers in Compromise | ||
| AP | Adjustment Pending | ||
| APL | Authorized Preparer List | ||
| ARDI | Accounts Receivable Dollar Inventory | ||
| ARL | Adjustment Record List | ||
| ASED | Assessment Statute Expiration Date | ||
| ASFR | Automated Substitute for Return | ||
| ATAF | ACS Taxpayer Account File | ||
| ATAO | Application for Tax Assistance Order | ||
| ATIN | Adoption Taxpayer Identification Number | ||
| ATS | Abusive Tax Shelter | ||
| ATSDT | Abusive Tax Shelter Detection Team | ||
| AUR | Automated Underreporter Project | ||
| AUS | Automated Underreporter System | ||
| AWMS | Automated Workload Management System | ||
| BCC | Business Operating Division Client Code | ||
| BCS | Block Count Sheet | ||
| BEITC | Business Energy Investment Tax Credit | ||
| B&F | Business & Farm | ||
| BHR | Block Header Record | ||
| BLLC | Bankruptcy Litigation Location Code | ||
| BMF | Business Master File | ||
| BOB | Block Out of Balance | ||
| BOD | Business Operating Division | ||
| BPI | TOP Offset Bypass Indicator | ||
| BPL | Block Proof List | ||
| BPR | Block Proof Record | ||
| BPRL | Block Proof Record Listing | ||
| BRTF | Business Return Transaction File (CADE) | ||
| BRTFOL | Business Return Transaction File On-Line | ||
| BRTVU | Business Return Transaction Files On-Line | ||
| BS | Blocking Series | ||
| BTIF | Business Taxpayer Information File | ||
| BWH | Backup Withholding | ||
| CADE | Customer Account Data Engine | ||
| CAF | Centralized Authorization File | ||
| CAP | CAWR Automated Program Tier II System | ||
| CAPR | Computer Assisted Pipeline Review | ||
| CAPS | Corporate Accounts Processing System | ||
| CAR | Collection Activity Reports | ||
| CATS | Computer Assisted Training System | ||
| CAWR | Combined Annual Wage Reporting | ||
| CBAF | Commercial Bank Address File | ||
| CBRS | Currency and Banking Retrieval System | ||
| CC | Closing Code | ||
| CC | Command Code | ||
| CCA | Case Control Activity | ||
| CCA | Case Control Assignment | ||
| CCC | Computer Condition Code | ||
| CCU | Cycle Control Unit | ||
| CD | Certificate of Deposit | ||
| CDR | Control Data Recap | ||
| CEMIS | Coordinated Examination Management Information System for Large Cases | ||
| CERS | Collection/Exam Referral System | ||
| CES | Correspondence Expert System | ||
| CFf | Collection Function-field | ||
| CFOL | Corporate Files on Line | ||
| CIS | Correspondence Imaging System | ||
| CLC | Collection Location Code | ||
| CNC | Currently Not Collectable | ||
| COA | Change of Address | ||
| COAD | Coin Operated Amusement Device | ||
| COBRA | Consolidated Omnibus Reconciliation Act | ||
| COMPS | Composite Mail Processing System | ||
| CP | Computer Paragraph | ||
| CP2000 | Computer Paragraph 2000 or “Notice of Proposed Adjustment for Underpayment/ Overpayment CP 2000” | ||
| CPL | Cycle Proof Listing | ||
| CPU | Central Processing Unit | ||
| CRIS | Compliance Research Information System | ||
| CRL | Control Record Listing | ||
| CRS | Communication Replacement System | ||
| CSC | Cincinnati Campus | ||
| CSED | Collection Statute Expiration Date | ||
| CSP | Centralized Scheduling Program | ||
| CSR | Customer Service Representative | ||
| CSS | Clerical Screening Subsystem | ||
| CUM | Cumulative | ||
| CUP | Corrected Unpostable | ||
| CVPN | Civil Penalty | ||
| CWA | Central Withholding Agreement | ||
| CY | Calendar Year | ||
| CYC | Cycle | ||
| CZ | Combat Zone | ||
| DAIP | Delinquent Account Inventory Profile | ||
| DAR | Delinquent Accounts and Returns | ||
| DATC | Deferred Adverse Tax Consequence | ||
| DBA | Data Base Administrator | ||
| DBPS | Daily Block Proof Summary | ||
| DC | Dishonored Check | ||
| DC | Document Code | ||
| DC | Disposal Code | ||
| DCC | Detroit Computing Center | ||
| DCF | Dishonored Check File | ||
| DCN | Document Control Number | ||
| DCPS | Data Communication Processing System | ||
| DDB | Dependent Database | ||
| DI | Desktop Integration | ||
| DIAL | Delinquent Investigation/Account Listing | ||
| DIF | Discriminate Index Function | ||
| DIN | Document Identification Number | ||
| DIRF | Delinquency Investigation Research File | ||
| DIS | Distribution Input System | ||
| DLN | Document Locator Number | ||
| DM-1 | Data Master 1 (SSA Tape) | ||
| DMF | Debtor Master File | ||
| DMFOL | Debtor Master File On Line | ||
| DMS | Database Management System | ||
| DO | District Office | ||
| DOAO | District and Area Office Location | ||
| DOC | Document | ||
| DOD | Date of Death | ||
| DP | Data Processing | ||
| DPC | Designated Payment Code | ||
| DPR | Daily Production Report | ||
| DRU | Document Retention Unit | ||
| DTR | Daily Transaction Register | ||
| DY | Last Year Delinquent Return Secured | ||
| EAC | ERS Action Codes | ||
| EACS | EP/EO Application Control System (IDRS) | ||
| EAM | Electronic Accounting Machine | ||
| EAN | Entity Account Number | ||
| EAX | System ID or Run Number for EACS | ||
| EC | Employment Code | ||
| ED | Establishment Date | ||
| EDP | Electronic Data Processing | ||
| EDS | EP/EO Determination System | ||
| EEIF | Enhanced Entity Index File | ||
| EFAST | ERISA Filing Acceptance System | ||
| EFDS | Electronic Fraud Detection System | ||
| EFT | Electronic Funds Transfer | ||
| EFTPS | Electronic Federal Tax Payment System | ||
| EIC | Earned Income Credit | ||
| EIF | Entity Index File | ||
| EIN | Employer Identification Number | ||
| EKIF | EIN Key Index File | ||
| ELF | Electronic Filing System | ||
| EMFOL | Employee Plans Master File On Line | ||
| ENC | Extension Notice Code | ||
| EO | Exempt Organization | ||
| EOD | End-of-Day | ||
| EOM | End of Month | ||
| EOMF | Exempt Organizations Master File | ||
| EOps | Enterprise Operations | ||
| EOS | End-of-Shift | ||
| EP | Employee Plans | ||
| EPC | Exemption Processing Code | ||
| EPMF | Employee Plans Master File | ||
| ERA | EIN Research and Assignment | ||
| ERAS | EIN Research and Assignment System (IDRS) | ||
| ERCS | Examination Returns Control System | ||
| ERDF | Edited Research Data File | ||
| ERDS | Edited Research Display File (ACTRA only) | ||
| ERIS | Enforcement Revenue Information System | ||
| ERF | Employer Return File | ||
| ERIS | Employment Retirement Income Security | ||
| ERS | Error Resolution System | ||
| ES | Estimated Tax | ||
| ESOP | Employee Stock Ownership Plan | ||
| ETAP | Employment Tax Adjustment Program | ||
| ETE | Employment Tax Examination | ||
| FAISR | Files Archival Image Storage and Retrieval System | ||
| FARC | Federal Archives Record Center | ||
| FE | Field Examination | ||
| FHWA | Federal Highway Administration | ||
| FICA | Federal Insurance Contribution Act | ||
| FIN | Fiduciary Identification Number | ||
| FINDE/FINDS | Command Codes | ||
| FIRPTA | Foreign Investment Real Property Tax Act | ||
| FLC | File Location Code | ||
| FM | Fiscal Month | ||
| FMS | Financial Management Service | ||
| FOD | Foreign Operations District | ||
| FOF | Fact of Filing | ||
| FOI | Freedom of Information | ||
| FP | Full Paid | ||
| FPAA | Final Partnership Administrative Adjustment | ||
| FPLP | Federal Payment Levy Program | ||
| FRB | Federal Reserve Bank | ||
| FR(C) | Filing Requirement (Code) | ||
| FRC | Federal Records Center | ||
| FSAA | Final S-Corporation Administrative Adjustment | ||
| FSC | Filing Status (Code) (Form 1040 Series) | ||
| FSP | Functional Specification Package | ||
| FTD | Federal Tax Deposit | ||
| FTF | Failure to File | ||
| FTL | Federal Tax Lien | ||
| FTP | Failure to Pay | ||
| FTS 2000 | Federal Telecommunications System 2000 | ||
| FUTA | Federal Unemployment Tax Act | ||
| FY | Fiscal Year | ||
| FYE | Fiscal Year Ending | ||
| FYM | Fiscal Year Month | ||
| FRB | Federal Reserve Bank | ||
| FRC | Federal Records Center | ||
| FSAA | Final S-Corporation Administrative Adjustment | ||
| FSC | Filing Status (Code) (Form 1040 Series) | ||
| FSP | Functional Specification Package | ||
| GAME | State Lottery and Gambling Casino Winners | ||
| GEN | Group Exemption Number | ||
| GERL | Good/Error/Reject Block Proof Record List | ||
| GLF | General Ledger File | ||
| GMF | Generalized Mainline Framework | ||
| GOALS | Government On–Line Accounting Link System | ||
| GPP | General Purpose Program | ||
| GUF | Generalized Unpostable Framework | ||
| HC | Hold Code | ||
| HSTG | Hostage | ||
| HTF | Highway Trust Fund | ||
| HUR | High Underreporter | ||
| ICP | Integrated Case Processing | ||
| ICS | Inventory Control System | ||
| ICS | Integrated Collection System | ||
| ID | Identification | ||
| IDRS | Integrated Data Retrieval System | ||
| IDS | Inventory Delivery System | ||
| IE | Itemized Deductions | ||
| IGP | Information Gathering Project | ||
| IMF | Individual Master File | ||
| IMPIS | Integrated Management Planning Information System | ||
| IMS | Integrated Management System | ||
| IP | Interactive Applications | ||
| IPR | Individual Performance Report | ||
| IRA | Individual Retirement Account | ||
| IRAF | Individual Retirement Account File – No longer used | ||
| IRC | Internal Revenue Code | ||
| IRM | Internal Revenue Manual | ||
| IRMF | Information Returns Master File | ||
| IRP | Information Return Program | ||
| IRSS | Information Return Master File Transcript | ||
| ISRP | Integrated Submission and Remittance Processing | ||
| ITIF | Individual Taxpayer Information File | ||
| ITIN | IRS Individual Taxpayer Identification Number | ||
| IVL | Individual Validation Listing | ||
| JOC | Joint Operation Command – Atlanta | ||
| KDO | Key | ||
| KIF | Key Index File – No longer Used | ||
| KITA | Killed in Terrorist Action | ||
| KV | Key Verify | ||
| LADAR | Large Dollar Accounts Receivable | ||
| LEM | Law Enforcement Manual | ||
| LMSB | Large & Mid-Size Business | ||
| LOAF | Level One Archive File ACS | ||
| LPS | Last Period Satisfied | ||
| LRA | Last Return Amount | ||
| MACS | Midwest Automated Compliance System | ||
| MAR | Mid–Atlantic Region | ||
| MCC | Major City Code | ||
| MCC | Martinsburg Computing Center | ||
| MCR | Master Control Record | ||
| MDF | Master Directory File | ||
| ME | Math Error | ||
| MeF | Modernized e File | ||
| MED | Medicare | ||
| MER | Management Error Report | ||
| MF | Master File | ||
| MFA | Married Filing Alien | ||
| MFR | Mail File Requirement (Code) | ||
| MFT | Master File Transaction | ||
| MIR | Management Information Report | ||
| MIS | Management Information System | ||
| MOP | Military Operations | ||
| MPS | Master File Pipeline System | ||
| MRS | Microfilm Replacement System | ||
| NAI | National Accounts Index | ||
| NAICS | North American Industry Classification System | ||
| NAP | National Account Profile | ||
| NAMEB/NAMI | Command Code | ||
| NB | Non–Business | ||
| NBAP | Notice of Beginning of Administrative Procedures | ||
| NCC | National Computing Center | ||
| NECT | Non–Exempt Charitable Trust | ||
| NIF | Not In File | ||
| NMF | Non–Master File | ||
| NO | National Office | ||
| NPJ | Non Pre–Journalized | ||
| NR | No Remittance | ||
| NRA | Non Resident Alien | ||
| NRPS | Notice Review Processing System | ||
| NSF | Name Search Facility | ||
| NTRR | Net Tax Refund Report | ||
| NU | Nullified Unpostables | ||
| NUL | Nullified Unpostable Listing | ||
| OASI | Old Age Survivors Insurance | ||
| OBL | Outstanding Balance List | ||
| OCR | Optical Character Recognition | ||
| OE | Office Examination | ||
| OE | Original Entry | ||
| OFP | Organizations Functions and Programs | ||
| OG/OB | Office Group/Office Branch | ||
| OIC | Offer in Compromise | ||
| OLE | On Line Entity | ||
| OPAC | On-Line Payment and Collection System | ||
| OTA | On Line Tax Advisor | ||
| OTFP | Other Than Full Paid | ||
| OTN | TOP Offset Trace Number | ||
| PANF | Plan Account Number File | ||
| PAO | Penalty Appeals Officer | ||
| PBA | Principal Business Activity Code | ||
| PC | Process Code | ||
| PCA | Project literal for the Performance Evaluation Reporting Project | ||
| PCB | Project literal for the Service Center Workload Scheduling Project | ||
| PCD | Project literal for the Control Data Analysis Project | ||
| PCCF | Plan Case Control File | ||
| PCS | Partnership Control System | ||
| PCF | Plan Characteristics File | ||
| PDT | Potentially Dangerous Taxpayer | ||
| PE | Program Error | ||
| PE | Production Evaluation | ||
| PECF | Presidential Election Campaign Fund | ||
| PIA | Principal Industry Activity Code | ||
| PICF | Partnership Information Control File | ||
| PINEX | Penalty and Interest Explanations | ||
| PJ | Pre–Journalized | ||
| PLC | Primary Location Code | ||
| PLEC | Plan Level Entity Control | ||
| PMF | Payer Master File | ||
| POA | Power of Attorney | ||
| POD | Post of Duty | ||
| PPBS | Planning, Programming and Budgeting System | ||
| PRA | Pre–refund Audit | ||
| PRC | Penalty Reason Code | ||
| PRN | Penalty Reference Number | ||
| PRO | Problem Resolution Officer | ||
| PRP | Program Requirement Package (Information Technology Services) | ||
| PRP | Problem Resolution Program | ||
| PSP | Program and Special Project | ||
| PSSN | Primary Social Security Number | ||
| PTP | Publicly Traded Partnerships | ||
| PTIN | Preparer Tax Identification Number | ||
| PTP | Publicly Traded Partnership | ||
| PTPF | Payee TIN Perfection File | ||
| PY | Processing Year | ||
| PYNC | Prior Year Notice Code | ||
| QRP | Questionable Refund Program | ||
| QRDT | Questionable Refund Detection Team | ||
| RA | Revenue Agent | ||
| RACS | Revenue Accounting Control System | ||
| RAF | Reporting Agent’s File | ||
| RC | Reason Code | ||
| RCC | Return Condition Code | ||
| RCF | Recertification System (IDRS) | ||
| RDC | Regional Disbursing Center | ||
| RDD | Return Due Date | ||
| RDO | Regional Disbursing Office | ||
| REF | Refund Information File | ||
| REI | Recognition Equipment Incorporated | ||
| RF | Retention File | ||
| RFC | Regional Finance Center | ||
| RICS | Return Inventory Classification System | ||
| RIS | Real-time Input System | ||
| RIS | Request for Information Technology Services | ||
| RMF | Residual Master File | ||
| RO | Revenue Officer | ||
| ROFT | Record of Federal Tax | ||
| RPD | Remittance Processing Device | ||
| RPS | Remittance Processing System | ||
| RRCS | Revenue Receipt Control Sheet | ||
| RRPS | Residual Remittance Processing System | ||
| RRT | Railroad Retirement | ||
| RSED | Refund Statute Expiration Date | ||
| RTL | Renumbered Transaction List | ||
| RUC | Responsibility Unit Code | ||
| RWMS | Resource and Workload Management System | ||
| SB/SE | Small Business & Self-Employed | ||
| SC | Service Center | ||
| SCCA | Service Center Cost Accounting | ||
| SCCB | Service Center Collection Branch | ||
| SCCF | Service Center Control File | ||
| SCME | Service Center Math Error | ||
| SCRS | Service Center Replacement System | ||
| SCTN | Service Center Taxpayer Notice | ||
| SCUP | Service Center Unpostable | ||
| SCRIPS | Service Center Recognition/Image Processing System | ||
| SD | Source Document | ||
| SDF | Source Document Folders (IDRS) | ||
| SERFE | Selection of Exempt Returns for Examination | ||
| SFR | Substitute for Return | ||
| SIC | Schedule Indicator Code | ||
| SITLP | State Income Tax Levy Project | ||
| SKIF | SSN Key Index File | ||
| SOI | Statistics of Income | ||
| SPC | Special Project Code | ||
| SPF | Special Procedures Function | ||
| SR | Settlement Register | ||
| SSA | Social Security Administration | ||
| SSA-CAWR | SSA referred CAWR cases with “missing” Forms W-2. Potential Civil penalty case. | ||
| SSN | Social Security Number | ||
| SSSN | Secondary Social Security Number/Spouse’s SSN | ||
| SST | Social Security Tax | ||
| STEX | Statute Expired | ||
| SUPER | Study of the Utility of Processing Electronic Returns | ||
| SVC | Special Valuation Code | ||
| SWR | Southwest Region | ||
| TAS | Taxpayer Advocate Service | ||
| TC | Transaction Code | ||
| TCC | Tennessee Computing Center | ||
| TCC | Transmittal Control Code (Magnetic Media) | ||
| TCMP | Taxpayer Compliance Measurement Program | ||
| TDA | Taxpayer Delinquent Account (aka Bal Due) | ||
| TDI | Taxpayer Delinquency Investigation (aka Del Ret) | ||
| TEB | Tax Exempt Bonds | ||
| TEFRA | Tax Equity Fiscal Responsibility Act (1982) | ||
| TE/GE | Tax-Exempt & Government Entities | ||
| TEP | Tape Edit Processor | ||
| TREES | TE/GE Reporting & Electronic Examination System | ||
| TFRP | Trust Fund Recovery Penalty | ||
| TIF | Taxpayer Information File | ||
| TILT | Taxpayer Inquiry Lookup File | ||
| TIN | Taxpayer Identification Number | ||
| TOP | Treasury Offset Program | ||
| TP | Taxpayer | ||
| TPC | Third Party Contact | ||
| TPI | Total Positive Income | ||
| TPNC | Taxpayer Notice Code | ||
| TPS | Taxpayer Service | ||
| TR | Transaction | ||
| TRA | Tax Reform Act | ||
| TRIS | Telephone Routing Interactive System | ||
| TRS | Transcript Research System | ||
| TSN | Tape Sequence Number | ||
| TXI | Taxable Income | ||
| TY | Tax Year | ||
| UA | Unavailable (charged out) | ||
| ULC | Unit Ledger Card also Universal Location Code | ||
| UP | Unpostable | ||
| UPC | Unpostable Code | ||
| URC | Unpostable Resolution Code | ||
| URF | Unidentified Remittance File (IDRS) | ||
| URP | Underreporter Program | ||
| US | Unserviceable | ||
| VEBA | Voluntary Employees Benefit Association | ||
| VRU | Voice Response Unit | ||
| W | Waiver | ||
| WI | Wage & Investments | ||
| WIR | Wage Information Retrieval System | ||
| WP&C | Work Planning & Control | ||
| WPT | Windfall Profit Tax | ||
| WT | Withholding Tax | ||
| WTU | Weekly TIF Update | ||
| XSF | Excess Collection File | ||
| ZTIF | Miscellaneous Taxpayer Information File (IRA, EPMF, NMF) | ||
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