Corporation tax

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 26.5
Main rate Over 250,000 25
Marginal relief fraction 3/200  

Accessibility | Disclaimer | Help | Site map | © 2025 Thomas Alexander & Co. All rights reserved.

We use cookies on this website, you can find more information about cookies here.
Thomas Alexander and Company Limited, Registered in England and Wales, Company Number 3958289. Registered office: 590 Green Lanes, Palmers Green, London N13 5RY

Thomas Alexander and Company Limited maintains professional indemnity insurance in accordance with ICAEW requirements. Our insurer is Aqueus Underwriting Ltd, located at 10th Floor, 5 Churchill Place, London, E14 5HU. The policy provides coverage for services performed Worldwide. Further details are available upon request.