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Corporation tax rates

2017/18
2016/17
  • Corporation tax rates are set for each Financial Year. A Financial Year runs from 1 April to the following 31 March.
  • If the accounting period of a company straddles the 31 March, the profits are apportioned on a time basis to each Financial Year.
  • The Northern Ireland Executive has committed to setting the rate of corporation tax at 12.5% in April 2018 if the Northern Ireland Executive demonstrates its finances are on a sustainable footing.
Year to 31.3.18 Rate %
All profits 19
  • Corporation tax rates are set for each Financial Year. A Financial Year runs from 1 April to the following 31 March.
  • If the accounting period of a company straddles the 31 March, the profits are apportioned on a time basis to each Financial Year.
Year to 31.3.17 Rate %
All profits 20