On 1 April 2023, the main Corporation Tax (CT) rate was increased from 19% to 25%. A small profits rate of 19% was introduced for companies with profits below £50,000 (the lower limit).
Marginal relief was brought in for companies whose profits fall between the lower limit and £250,000 (the upper limit).
For some companies the lower and upper limits will be much lower, and certain companies will be entirely excluded from the small profits rate and marginal relief.
