Corporation Tax Rates to 31.03.12 15 Nov 2011 Gemma Tax No comment Corporation Tax is payable on adjusted NET company trading profits and the rates for year ends falling up to 31.03.12 are:- On adjusted LTD Company profits:- £ 0 – 300,000 20% 300,001 – 1,500,000 27.5% 1,500,001 > 26% Related posts: National Insurance Rate Information