Corporation tax is the tax on the profits of firms. A reduction in corporation tax will mean more retained profits for firms
Reduction of corporation tax would incentivise firms to stay in the country and not move to lower tax jurisdictions
Reduction of corporation tax would incentivise using the increased amount of retained profits to increase investments in human/ physical capital
Low levels of corporation tax would increase quality of labour/ capital; more firms, foreign and domestic, joining the economy increases the quantity of enterprise
An example of corporation tax reform:
During the 2000s, corporation tax was gradually reduced from 30% to 19%. Jeremy Hunt raised this to 25% recently as there was an increasing debt burden. This is still low by historic standards: it was 55% in 1980. The global average is 25%
The Laffer curve predicts that a lower rate will actually increase tax revenue as fewer firms are incentivised to use 'creative' accounting to pay the full amount (tax evasion)
Lower corporation tax does not mean that firms will necessarily use their retained profit for reinvestment; firms may choose to pay higher dividends to shareholders
Lower corporation tax may lead to investment in firms abroad. It is not guaranteed that firms will invest in the UK