Buying plant and machinery
作者：Stephen Relf
1. [Qualifying activity](https://library.croneri.co.uk/po-heading-id_tyhlleOSEkWJZnr4U9XL6g)
1.1. Trade
1.2. Furnished holiday lettings - abolished April 2025
1.3. Other
2. [Definition of plant and machinery](https://library.croneri.co.uk/po-heading-id_j6MfqNpmF0u1Ci9Z0uIIpw)
2.1. No statutory definition
2.2. Lists of assets that cannot be plant and machinery
2.2.1. Buildings
2.2.2. Structures
2.3. Case law
2.3.1. Used for carrying on the business
2.3.2. Not stock in trade
2.3.3. Not the business premises or part of the business premises
3. [Private use adjustment](https://library.croneri.co.uk/po-heading-id_F5KKLkFlIkGzRSw0o-WATA)
3.1. For unincorporated businesses
4. [Timing of expenditure](https://library.croneri.co.uk/po-heading-id_NlGApbDey0yJrc7egRwZ3w)
5. Types of allowance
5.1. Writing down allowance
5.1.1. [Main pool](https://library.croneri.co.uk/po-heading-id_4LWzKPqCp0CkXNtEDzOP9g)
5.1.1.1. 18% WDA
5.1.2. [Special-rate pool](https://library.croneri.co.uk/po-heading-id_EZY4ZQoeAUGlHjPQwBV_GQ)
5.1.2.1. 6% WDA
5.1.3. Balancing allowance in certain circumstances only
5.1.4. Balancing charge in certain circumstances only
6. [Annual Investment Allowance](https://library.croneri.co.uk/po-heading-id_KaR2ZjVK4U631kLeF0QXmQ)
6.1. 100% relief on £1m pa (corporation tax and income tax)
7. [Full-expensing and 50% SR allowance](https://library.croneri.co.uk/po-heading-id_to--W3qdJkytMlFotD25mw#po-heading-id_EduYQ2Vgd0y1OuQ-ER-UTA)
7.1. Conditions apply, eg
7.2. Companies only
7.3. Incurred on or after 01/04/23 (now permanent)
7.4. New main rate P&M
7.5. General exclusions apply, eg
7.5.1. Not cars