Table 1.
Random Audit Population Industry Composition
| Rank | 4-Digit NAICS | Frequency | Description |
|---|---|---|---|
| 1 | 5313 | 56,412 | Activities related to real estate |
| 2 | 6211 | 41,992 | Offices of physicians |
| 3 | 5419 | 35,161 | Other professional, scientific, and technical services |
| 4 | 5311 | 25,185 | Lessors of real estate |
| 5 | 2389 | 21,957 | Other specialty trade contractors |
| 6 | 9990 | 21,233 | Unknown |
| 7 | 5415 | 20,659 | Computer systems design and related services |
| 8 | 7221 | 19,561 | Full-service restaurants |
| 9 | 5411 | 18,106 | Legal services |
| 10 | 8129 | 17,877 | Other personal services |
| 11 | 8111 | 17,286 | Automotive repair and maintenance |
| 12 | 5416 | 16,441 | Management, scientific, and technical consulting services |
| 13 | 2361 | 15,660 | Residential building construction |
| 14 | 5242 | 15,632 | Agencies, brokerages, and other insurance related activities |
| 15 | 2382 | 14,683 | Building equipment contractors |
| 16 | 6212 | 14,172 | Offices of dentists |
| 17 | 7222 | 13,355 | Limited-service eating places |
| 18 | 4841 | 12,915 | General freight trucking |
| 19 | 6213 | 12,264 | Offices of other health practitioners |
| 20 | 5412 | 11,848 | Accounting, tax preparation, bookkeeping, and payroll services |