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Corporation Tax Rates

  • 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% when the Northern Ireland Executive demonstrates its finances are on a sustainable footing.
Year to 31.3.25 Profits band £ Rate %
Small profits rate 0 – 50,000 19
Marginal rate 50,001 – 250,000 26.5
Main rate Over 250,000 25
Marginal relief fraction 3/200
  • 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% when the Northern Ireland Executive demonstrates its finances are on a sustainable footing.
Year to 31.3.24 Profits band £ Rate %
Small profits rate 0 – 50,000 19
Marginal rate 50,001 – 250,000 26.5
Main rate Over 250,000 25
Marginal relief fraction 3/200

For the year to 31.3.23 the main rate of corporation tax was 19%. Special rules apply to accounting periods straddling 1 April 2023. For the year to 31.3.24 the profits limits are reduced for a company with associated companies. Different rates apply for ring-fenced (broadly oil industry) profit.

  • 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% when the Northern Ireland Executive demonstrates its finances are on a sustainable footing.
Year to 31.3.22 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.
  • The Northern Ireland Executive has committed to setting the rate of corporation tax at 12.5% to apply to certain trading income. While legislation has been passed, the final devolution is subject to agreement between the UK Government and the Northern Ireland Executive, which has not yet been reached.
Year to 31.3.23 Rate %
All profits 19

Tax Rates & Allowances