First-year allowances and full expensing
Company first-year reliefs whose eligibility needs facts beyond an invoice total.
Company first-year reliefs whose eligibility needs facts beyond an invoice total.
First-year relief needs separate eligibility facts
Reviewed · Current · Law · From 1 April 2023
100%
50%
Company full expensing and the 50% special-rate first-year allowance require qualifying new and unused plant or machinery and exclude cars.
The existing Sterling capital-allowance engine deliberately leaves these claims out unless the required evidence and disposal treatment are modelled. AIA can give the same immediate deduction below its available limit without importing the later full-expensing disposal charge.
Exceptions and branches
- Full expensing, the 50% special-rate allowance, the 40% first-year allowance and their disposal charges are not calculated by the current Sterling engine.
- Leasing, mixed use, connected-party and general statutory exclusions need separate review.
Related concepts
Linked from
Sources
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Capital Allowances Act 2001, section 45S — Section 45S. Primary authority.
-
Finance Act 2026, section 29 — Section 29. Primary authority.
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Finance Act 2026, section 30 — Section 30. Primary authority.
Knowledge version: sterling-knowledge@2026-09-11.7. Last checked 11 September 2026.