A qualifying trade is:
| Table A (qualifying trades) | Definition |
| Manufacturing or processing | Manufacturing or processing is manufacturing goods or materials CA32210, or subjecting goods or materials to a process CA32213 |
| Storage | Storage
is a trade consisting in storing goods or materials:
|
| Agricultural contracting |
Agricultural contracting
CA32225 is a trade consisting in:
|
| Foreign plantation | A foreign plantation is a trade consisting in working land outside the UK for the purposes of husbandry, forestry or the growing or harvesting of crops CA32226. |
| Fishing | Fishing is a trade consisting in catching or taking fish or shellfish CA32227. |
| Mineral extraction | Mineral extraction is a trade consisting in working a source of mineral deposits CA32228. |
| Table B (undertakings which are qualifying trades) | Definition |
| Electricity undertaking | An electricity undertaking is an undertaking for the generation, transformation, conversion, transmission or distribution of electrical energy. |
| Water undertaking
| A water undertaking is an undertaking for the supply of water for public consumption. |
| Sewerage undertaking
| A sewerage undertaking is an undertaking for the provision of sewerage services within the meaning of the Water Industries Act 1991 |
| Transport undertaking | CA32230 |
| Inland navigation undertaking | |
| Dock undertaking | A dock includes:
other than a pier or jetty primarily used for recreation CA32232. |
| Tunnel undertaking | |
| Bridge undertaking | Construction expenditure does not qualify under this heading unless it was incurred after the end of 1956-57 |
| Highway undertaking | |
| Hydraulic power undertaking | A hydraulic power undertaking is an undertaking for the supply of hydraulic power. |
Professions and vocations are not trades and so they cannot be
qualifying trades.
A trade does not need to be within the charge to tax to be a
qualifying trade. For example, a charity may rent a building in
which it makes goods to sell in its shops. The charity is exempt
from tax but the manufacture of goods is still a qualifying trade
and so the landlord of the building can claim IBA.