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You have to make an election to benefit from the reduced rate of Corporation Tax that applies to the Patent Box. You can do this in the computations accompanying your Company Tax Return or separately in writing. There is no special form of words for this election. You must make your election within two years after the end of the accounting period in which the relevant profits and income arose.

The full benefit of the regime will be phased in from 1 April 2013. You will need to apply an appropriate percentage to the profits your company earns from its patented inventions.

The appropriate percentages for each financial year are:

  • 1 April 2013 to 31 March 2014: 60 per cent
  • 1 April 2014 to 31 March 2015: 70 per cent
  • 1 April 2015 to 31 March 2016: 80 per cent
  • 1 April 2016 to 31 March 2017: 90 per cent
  • from 1 April 2017: 100 per cent

There is no box on the Company Tax Return for making the election. Instead you apply the reduced 10% rate by subtracting an additional trading deduction from your Corporation Tax profits.

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