IMF Entity Data
Internal Revenue Manual Part 2. Information Technology · 2026-10-03 edition · updated 2026-10-04 · United States
IMF Entity Heading Lines
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Record Element Description
Item
Description
1
TC 148 HOLD INDICATOR See IRM 5600–22Collection Field Function Techniques and other assignments, for meanings of values.
2
NAME LINE YEAR
3
FILING STATUS CODE
4
PRIMARY NAME LINE
5
OIC Generated literal NOTE: This literal is generated when OIC-ACCEPTANCE-YR field is greater than zero.
6
Business Operating Division Code
7
Business Operating Division Client Code
8
SECOND NAME LINE (if present may be CONTINUED NAME LINE or FOREIGN ADDRESS LINE, or CARE OF NAME LINE)
9
STREET ADDRESS
10
ADDRESS CHANGE CYCLE—Cycle the latest address change posted
11
CITY/STATE
12
ZIP CODE
13
SPOUSES SSN
14
PRIOR NAME CONTROL
15
LEFT HAND FREEZE CODES— See IRM 2.24.1, ADP Systems Code
16
RIGHT HAND FREEZE CODES— See IRM 2.24.1, ADP Systems Code
17
PRIMARY LOCATION CODES
18
AREA OFFICE CODE
19
COLLECTION LOCATION CODES
20
SMALL BUSINESS AREA OFFICE CODE
21
MAIL FILE REQUIREMENTS
22
INVALID SSN FREEZE INDICATOR Zero - Invalid SSN Freeze in effect Blank - Invalid SSN Freeze in effect. 1 - Invalid SSN Freeze has been released by TC 290 or 300 or Scrambled SSN Indicator of "2" . This release is effective during the current calendar year only. 2 - Invalid SSN Freeze has been released by TC 150 Document Code 72 or 73 posting to this Temporary SSN. This release is effective during the current calendar year only. 4 - Account on the invalid segment and the Invalid SSN Freeze has been released by a transaction (other than TC 100, 90X, 92X or 99X) which has posted on the account and the transaction name control matches the name control for this account on a file of update records received from SSA, which have not yet updated the DM-1 file. The DM-1 file is updated on a quarterly basis. 5 - Combination of 1 and 4 above. 6 - Combination of 2 and 4 above 8 - Account on invalid segment a d TC 510 posted to account 9 - Combination of 1 and 8 above A - Combination of 2 and 8 C - Combination of 4 and 8 D - Combination of 1, 4 and 8 above. E - Combination of 2, 4 and 8 F - Combination of 1, 2, 4 and 8 above.
23
IRA FILING HISTORY CODES—Carries the history of IRA Accounts from 1980 (left most position), through 1994. Indicator will appear for those years an IRA Account is present.
24
CAF INDICATOR—If other than zero there is data present on the Centralized Authorization File for an entity authorized to perform certain functions for the taxpayer. Use CC CFINQ as described in IRM 2.3.31 to display CAF data.
25
YEAR REMOVED—will be significant only for accounts which have aged off from the Regular IMF to the Dropped Master File, which has only a minimum amount of data. Refer to the Microfilm Retention Register for more information, if desired. (Master File Transcripts only)
26
ENTITY EXTRACTION CYCLE—According to Master File processing, this is the cycle that the account was last extracted to the IDRS Taxpayer Information File. If no record of the last extraction, this field is blank.
27
FISCAL YEAR MONTH—from a most current First Name Line on the Master File entity.
28
SCRAMBLED SSN INDICATOR Blank - No scrambled SSN 01 - Scrambled SSN Indicator 04 - Mixed Entity 09 - Used to turn off all values of the indicator 10 - No 239C Questionnaire Indicator 12 - True Scrambled SSN Indicator 13 - SSN Not Valid for Federal Tax Purposes 20 - Closed No 239C Questionnaire Indicator (historical setting) 21 - Closed Scrambled SSN Indicator (historical setting) 22 - Closed True Scrambled SSN Indicator (historical setting) 23 - Closed SSN Not Valid for Federal Tax Purposes (historical setting 24 - FDC Identified SSN Owner.
29
≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡ ≡
30
TC130 INDICATOR—Transaction Code 130 Freeze Indicator, displays code of Service Center which established the 130 freeze. In some cases this will be a stale abbreviation
31
POTENTIALLY DANGEROUS TAXPAYER LITERAL—OR KILLED IN TERRORIST ACTION LITERAL. Will have value PDT if PDT indicator is 1 or CAU if it is 2. Will have a value of KITA if this indicator is 1 and HSTG if it is 2. If neither indicator is set, field contains blanks. If both are significant, it will display KITA.
32
MOP/UN LITERAL
33
CURRENTLY NOT COLLECTIBLE INDICATOR —"CNC" will be displayed if any module. in account contains an unreserved TC 530.
34
REDUCE UNNECESSARY FILING—If the RUF-IND= 1, display "RUF" .
35
ERO Indicator
36
PAYER MASTER FILE INDICATOR —When "1" , account is also on PMF.
37
TAX SHELTER INDICATOR
38
BANKRUPTCY CODE—A value of "1" means the taxpayer has filed for bankruptcy.
39
BANKRUPTCY LITIGATION LOCATION CODE
40
IMF Combat Literal SPACES - Insignificant. MOP/UN - Indicates that the taxpayer is a participant in a military operation or United Nations Peace Keeping Force.
41
45R YEAR1-The first year the small employer health insurance credit is taken.
42
45R YEAR2-The second year the small employer health insurance credit is taken.
43
CASE ID NUMBER-For ITIF it is the unique Taxpayer authentication number included on PDC notices and used by taxpayers for authentication when calling the PDC agency. Not valid for BTIF until 2018.
44
ACCRETION INDICATOR - blank - Not set1 - Accretion Invalid SSN Release has been set for at least one TC 150.
45
BFS Levy Code
46
PDC ID CD
47
MINISTER SELF-EMPLOYMENT TAX EXEMPT CODE If significant, means that a minister is claiming exemption from Self-Employment Tax. 1 = Form 4361 Approved 4 = Form 4029 Approved 2 = Form 4361 Denied 8 = Form 4029 Denied In addition, these character values are possible: B = Combination of 1 + 2 + 8 values above; C = Combination of 4 + 8 values above; D = Combination of 1 + 4 + 8 values above; E = Combination of 2 + 4 + 8 values above; F = Combination of 1 + 2 + 4 + 8 values above; Any combination of these values are possible. For example, the value "6" would mean Form 4361 Denied and Form 4029 Approved. The value "A" (2 + 8) would mean Both Forms Denied.
48
JUSTIFICATION CD
49
IRS EMPLOYEE CODE 1 - Primary 2 - Secondary 3 - Both IRS employees
50
FEDERAL EMPLOYEE INDICATOR 0 = Insignificant, edited as spaces 1 = Taxpayer is a Federal Employee or a Retiree, edited as "F"
51
LOW INCOME IND
52
ID THEFT 50X CODE - Indicates identity theft based on TC971 AC 501, 504, 505, or 506.
0 = No ID theft based on TC971 AC 50X
1 = AC 501
2 = AC 504
3 = AC 501 & 504
4 = AC 505
5 = AC 501 & 505
6 = AC 504 & 505
7 = AC 501 & 504 & 505
8 = AC 506
9 = AC 501 & 506
10 = AC 504 & AC 506
11 = AC 501 & 504 & 506
12 = AC 505 & 506
13 = AC 501 & 505 & 506
14 = AC 504 & 505 & 506
15 = AC 501 & 504 & 505 & 506
53
ID THEFT 52X CODE - Indicates identify theft based on TC971 AC 522, 523, 524 or 525.
0 = No ID theft based on TC971 AC 52X
1 = 971 AC 522
2 = 971 AC 523
3 = 971 AC 522 & 523
4 = 971 AC 524
5 = 971 AC 522 & 524
6 = 971 AC 523 & 524
7 = 971 AC 522 & 523 & 524
8 = 971 AC 525
9 = 971 AC 522 & 525
10 = 971 AC 523 & 525
11 = 971 AC 522 & 523 & 525
12 = 971 AC 524 & 525
13 = 971 AC 522 & 524 & 525
14 = 971 AC 523 & 524 & 525
15 = 971 AC 522 & 523 & 524 & 525
54
DAILY PROCESSING INDICATOR - Is valid for IMF only.
Values:
0 - Account does not qualify for daily processing.
1 - Account qualifies for daily processing.
55
VICTIM OF DOMESTIC VIOLENCE INDICATOR
Values:
0 – Not significant.
1 – Unreversed entity TC-971 AC 198 is present on the account.
56
IP PIN CODE
Values:
0 - No significance.
1 - Taxpayer was issued CP01A.
2 - Taxpayer is email eligible (registered and retrieved IP PIN from IP PIN application).
3 - Taxpayer email notification failed.
57
DEATH DATE-Is the date of death of the Primary Taxpayer based upon a posted TC540, or receipt of a Return (TC150) posted with condition code "A" or "F".
58
AOTC RECERT CODE
59
AOTC TAX PERIOD
60
AOTC RECERT ELIGIBLE TAX PERIOD
61
ACTC RECERT CODE
62
ACTC TAX PERIOD
63
ACTC RECERT ELIGIBLE TAX PERIOD
64
NAME LINE YEAR
65
PRIOR YEAR FILING STATUS CODE
66
PRIOR YEAR NAME LINE
67
PRIOR YEAR SPOUSE'S SSN and VALIDITY INDICATOR
68
CIVIL PENALTY NAME LINE or INNOCENT SPOUSE NAME. If present, both it and the preceding literal "PTNL" will be displayed. PTNL is Primary Taxpayer Name Line. LATEST RETURN INFORMATION
69
LAST RETURN FILED YEAR—Year of the most recent return
70
ES TAX DISCREPANCY CODE Blank = No discrepancy $ = Discrepancy
71
MATH ERROR CODE—Refer to IRM 2.24.1, ADP systems code for appropriate codes.
72
MULTIPLE MATH ERROR CODE INDICATOR Blank - None or one Math Error Code present. * - indicates more than one math error code is present.
73
FILING CONDITION CODE E - Even B - Balance Due C - Credit Elect R - Refund
74
FILE LOCATION CODE—The District Office in which the latest return was filed.
75
CYCLE LATEST RETURN POSTED—YYYYCC
Transaction Data Lines
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Record Element Description
Item
Description
1
TRANSACTION CODE
2
TRANSACTION REVERSAL INDICATOR blank—not reversed R—reversed
3
TRANSACTION DATE
4
TRANSACTION CYCLE—Cycle the transaction posted to the Master File
5
TRANSACTION DAY OF WEEK CODE
6
SERIAL NUMBER
7
DLN—Cycle the transaction posted to the Master File
8
MFT (related to 58X transaction)
9
TAX PERIOD (related to 58X transaction)
10
ESTATE SSN (related to 58X transaction)
11, 20, 23
CROSS REFERENCE TIN
12
SERVICE CENTER CODE—Indicates which Service Center input TC 130.
13
CLOSING CODE
14
BMF NAME CONTROL
15, 17
AGENCY CODE
16
AGENCY REFUND LITERAL ("AGENCY REFUND— " ) and AMOUNT, or"OBLIGATION DELETED"
18
SUB-AGENCY CODE
19
YEAR OF ORIGINAL OFFSET—TC 131
21
NO MERGE REASON CODE—TC 006 Only
01 = VEST 06 = 576 11=RPS 16 = TAXI
02 = XSSN 07 = 930 12=918 17 = LTEX
03 = TDA 08 = 940 13=916 18 = PDT
04 = 914 09 = 520 14=CAF 19 = CPNL
05 = DUP 10 = 424 15=RECR 20 = ATS
21 = 400
90 = N/C MISMATCH 91 = End of Year Merge Restriction 92 = Merged Modules Exceed Maximum Allowable Size
22
ADDRESS CHANGE INDICATOR Blank—no address change present for this transaction code. Used to indicate an address change accompanying TC's other than 014.
24
PRIOR NAME CONTROL
25
TRANSACTION CODE—Valid codes are 001, 002, 003, 005, 006, 011 and 026.
26
POSTED CYCLE
27
FIRST YEAR NAME LINE CHANGE
28
SECOND YEAR NAME LINE CHANGE
29
RECAPTURE YEAR - will not be set after 1982.
30
FORM 2119 INDICATOR - 0 - Form 2119 not required 1 - Form 2119 subsequently picked-up 2 - Form 2119 required
31
FORM 2110 YEAR DUE - (Format YYYY) Valid range greater than 1974.
32
JUSTIFICATION CODE. Displayed with Transaction Codes 000, 016, and 017. 0 - Non significant 1 - IRS valid name control 2 - Reversal of IRS valid
33
HISTORIC NAME CONTROL. Displayed with Transaction Codes 000, 016, and 017.
34
45R YEAR1—The first year the small employer health insurance credit is taken.
35
45R YEAR2—The second year the small employer health insurance credit is taken.
36
CLOSING CODE GROUP CLOSING-CODE = 52 - entry date or Desert Storm CLOSING-CODE = 53 - departure date for Desert Storm CLOSING-CODE = 54 - entry date or Bosnia CLOSING-CODE= 55 - departure date for Bosnia
37
ACTION CODE-
38
SECONDARY DATE-Is the end date of the FEMA declared disaster. (The begin date is the TRANS-DT in the fixed portion of the posted transaction for TC 971.) For 971 action codes 086, 087, and 688, this identifies the ending date of a FEMA declared disaster. For 971 action code 647, this identifies the ending date of a Federal Contract.
39
FEMA CONTRACT NUMBER-Is a unique Federal Emergency Management Agency number assigned for a federally designated disaster area.
40
TC-971 MISCELLANEOUS-Will be used to store miscellaneous information pertaining to the TC-971. For TC971 with TC-971-CD equal to 542 or 543 (IMF generated), the 20 position TC-971-MISC data element is redefined as follows: First character RESERVED-FOR-SIGN is leading separate character needed during extraction from IMF. RESERVED-FOR-SIGN-FILLER PIC X(1) Char pos: 23 AC-542-543-MONEY-AMT PIC S9(12) Char pos: 24-35 AC-542-543-REST PIC X(7) Char pos: 36-42
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