Buying plant and machinery (2026)
by Stephen Relf
1. [Private use adjustment](https://library.croneri.co.uk/po-heading-id_F5KKLkFlIkGzRSw0o-WATA)
1.1. For unincorporated businesses
2. [Annual Investment Allowance](https://library.croneri.co.uk/po-heading-id_KaR2ZjVK4U631kLeF0QXmQ)
2.1. 100% relief on £1m pa (corporation tax and income tax)
3. Types of allowance
3.1. Writing down allowance
3.1.1. [Main pool](https://library.croneri.co.uk/po-heading-id_4LWzKPqCp0CkXNtEDzOP9g)
3.1.1.1. 18% WDA
3.1.2. [Special-rate pool](https://library.croneri.co.uk/po-heading-id_EZY4ZQoeAUGlHjPQwBV_GQ)
3.1.2.1. 6% WDA
3.1.3. Balancing allowance in certain circumstances only
3.1.4. Balancing charge in certain circumstances only
4. [Full-expensing and 50% SR allowance](https://library.croneri.co.uk/po-heading-id_to--W3qdJkytMlFotD25mw#po-heading-id_EduYQ2Vgd0y1OuQ-ER-UTA)
4.1. Conditions apply, eg
4.2. Companies only
4.3. Incurred on or after 01/04/23 (now permanent)
4.4. New main rate P&M
4.5. General exclusions apply, eg
4.5.1. Not cars
4.6. Balancing charge on disposal
4.7. Similar 50% FYA for special rate assets
5. [First-year Allowance](https://library.croneri.co.uk/po-heading-id_to--W3qdJkytMlFotD25mw)
5.1. [Cars and vans: electric and zero emissions (separate module on electric vehicles)](https://library.croneri.co.uk/po-document-id_72408)
5.2. 100% rate on particular types of asset
5.3. [40% First Year Allowance](https://library.croneri.co.uk/cch_uk/btr/237-201)
5.3.1. [General exlcusion 6 not necessarily in point](https://library.croneri.co.uk/cch_uk/btr/237-226)
6. [Definition of plant and machinery](https://library.croneri.co.uk/po-heading-id_j6MfqNpmF0u1Ci9Z0uIIpw)
6.1. No statutory definition
6.2. Lists of assets that cannot be plant and machinery
6.2.1. Buildings
6.2.2. Structures
6.3. Case law
6.3.1. Used for carrying on the business
6.3.2. Not stock in trade
6.3.3. Not the business premises or part of the business premises