Corporation Tax Act 2010 section 23

The remaining amount

Section 23 is the fifth of five sections setting out the rules for marginal relief, and it calculates the marginal relief available on the remaining (non-ring fence) amount of a company's profits.

• This section deals with the calculation of marginal relief specifically for the non-ring fence portion of a company's profits.
• It uses the appropriate part of the upper limit, referred to as "UZ", in its calculation.
• Marginal relief applies where a company's profits fall between the lower and upper limits, reducing the tax rate gradually rather than applying the full main rate immediately.
• This section works alongside the preceding four sections, which together form the complete framework for calculating marginal relief.