# Expenditure within the Annual Investment Allowance limit attracts 100% tax relief. The £500,000 limit applied from 1/4/14 and runs to 31/12/15 with the limit thereafter yet to be announced.

These allowances are claimable on the costs of assets used for business purposes. The special rate pool includes long life assets, integral plant in buildings, thermal insulation and cars with CO2 emissions over 130g/km.

The old system for cheap/expensive cars was abolished from April 2009 although transitional rules apply for expenditure incurred before then.