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| Rate | 2010 | 2011 | 2012 | 2013 |
|---|---|---|---|---|
| Small Profits Rate* | 21%* | 20%* | 20%* | |
| Small Profits Rate can be claimed by qualifying companies with profits at a rate not exceeding | £300,000 | £300,000 | £300,000 | |
| Marginal Relief Lower Limit | £300,000 | £300,000 | £300,000 | |
| Marginal Relief Upper Limit | £1,500,000 | £1,500,000 | £1,500,000 | |
| Standard fraction | 7/400 | 3/200 | 1/80 | |
| Main rate of Corporation Tax* | 28%* | 26%* | 25%* | 24%* |
| Special rate for unit trusts and open-ended investment companies | 20% | 20% | 20% |
From 1 April 2010 onwards, the terminology used to describe some Corporation Tax rates and reliefs changed. This table reflects the new terminology but for ease the changes are shown below:
The main rate of Corporation Tax applies when profits (including ring fence profits) are at a rate exceeding £1,500,000, or where there is no claim to another rate, or where another rate does not apply.
*For companies with ring fence profits (income and gains from oil extraction activities or oil rights in the UK and UK Continental Shelf) these rates differ. The Small Profits Rate of tax on those profits is 19 per cent and the ring fence fraction is 11/400 for financial years starting 1 April 2010, 2011 and 2012. The main rate is 30 per cent for financial years starting on 1 April 2010, 2011 and 2012.
Indexation Allowance allows for the effects of inflation when calculating the chargeable gains of companies or organisations.
