| EIN | Employer Identification Number | Employer identification number. | |
| NCCSKEY | Unique key: ein + return date | Unique key: ein + return date | Beginning |
| FisYr | Fiscal year | Fiscal year (ending year) | |
| NAME | Name of organization | Organization name. | |
| STATE | State | Two-letter state abbreviation. | |
| OFFCR_ID | Officer ID | Unique Officer ID number. (Same person will have different number for each return.) | |
| NTEE1 | NTEE major group | NTEE major group (A-Z) | |
| NTEECC | NTEECC primary purpose | NTEECC classification | Beginning |
| zip5 | Zip code, 5 digits | First 5 digits of zip code | |
| FIPS | State + County FIPS code | 2-digit State + 3-digit County FIPS code (Federal Information Processing Standard). See also U.S. Census Bureau State & County QuickFacts. | |
| MSA_NECH | Metropolitan Statistical Area | Metropolitan Statistical Area (NCCS file) (list) | |
| PMSA | Primary MSA | Primary Metropolitan Statistical Area - the component areas that comprise a CMSA (76 PMSAs as of 1995). (list) | |
| outnccs | Out of Scope flag | Out-of-scope (IN/OUT) (see OUTREAS doc. for details) | Beginning |
| OUTREAS | Reason why out of scope | Reason why out of scope | |
| MAJGRPB | Major NTEE group | Major NTEE group plus hospitals and higher education | |
| P5NAME | Officer name | Officer name | Part 5, Column A |
| P5TTL | Title | Title | Part 5, Column B |
| P5WKPD | Work period | Work period | |
| P5COMP | Compensation | Compensation: salaries, bonuses, fees, & severance payments paid (col.C) | Part 5, Column—C |
| P5CONT | Contributions to benefit plans | Contributions to employee benefit plans & deferred contribs. (col.D) | Part 5, Column—D |
| P5EXACCT | Expense acct. & other allow. | Expense account and other allowances (col. E) | Part 5, Column—E |
| LEVEL2 | Reporting public charity group | Reporting public charity groups. | Beginning |
| FIN_ID | Unique org. ID | Unique organization ID | |
| SET_ | Source data set | Source data set | |
| formtype | 990 or ez? (9/z) | 990 or ez? (9/z) | beginning |
| NCCSKEY2 | Unique key: ein + fiscal year | Unique key: ein + fiscal year | Beginning |
| RandNum | Random number between 0 and 1 | Random number between 0 and 1 used for creating samples | |
| Latest | Most recent return | Is record the most recent one received from organization? (y) | |
| P1TOTEXP | Total Expenses of Org. | Total expenses of organization (line 17) from Part I | Part 1, line 17 |