| 6599 | Tax liens dealing (i.e., acting as principals) | |
| 7412 | Tax return preparation services | |
| 7412 | Tax return preparation services (without accounting, auditing, or bookkeeping services) | |
| 7511 | Tax sharing arrangements, federal administration | |
| 7511 | Tax violation investigation, federal | |
| 7511 | Taxation departments | |
| 7511 | Taxation services, provincial administration | |
| 7511 | Taxation, federal government | |
| 6303 | Taxi dispatching service | |
| 6022 | Taxi operator | |
| 6022 | Taxi service | |
| 7430 | Taxicab card advertising services | |
| 6022 | Taxicab fleet owners | |
| 6022 | Taxicab operation | |
| 6022 | Taxicab owner-operator | |
| 6022 | Taxicab service | |
| 5010 | Taxicabs, wholesale | |
| 3699 | Taxidermists, independent | |
| 5150 | Taxidermy supplies | |
| 3312 | Taximeters, manufacturing | |
| 9199 | Taxpayers advocacy organizations | |
| 9199 | Taxpayers' associations | |
| 5220 | Tea and coffee, retail | |
| 1721 | Tea bags, made from purchased woven or knitted materials | |
| 1549 | Tea blending | |
| 2899 | Tea kettles and coffee pots, fabricated metal (except electric, glass), manufacturing | |
| 2930 | Tea kettles, electric, manufacturing | |
| 2610 | Tea kettles, glass and glass ceramic, made in glass making plants | |
| 0113 | Tea plantation | |
| 5520 | Tea room | |
| 3610 | Tea wagons, metal, manufacturing | |
| 3610 | Tea wagons, wood, manufacturing | |
| 1549 | Tea, herbal, manufacturing | |
| 1554 | Tea, iced, manufacturing | |
| 5122 | Tea, wholesale | |
| 0200 | Teaberries, gathering of | |
| 9112 | Teacher associations (except bargaining) | |
| 7512 | Teacher certification bureaus, provincial | |
| 7512 | Teacher development programs, provincial | |
| 8030 | Teachers' colleges | |