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 31.3.26:
Rate
Profits band (£)
Rate (%)
Small profits rate
0 - 50,000
19
Marginal rate
50,001 - 250,000
26.50
Main rate Over
250,000
25
Marginal relief fraction
3/200
