Limited companies pay Corporation Tax on what they earn during their financial year, minus any allowable expenses or tax relief. Your company will pay tax at a rate of 25% if your profits for the year are more than £250,000.
Companies with profits less than £50,000 pay a reduced rate of Corporation Tax at 19%. Somewhere in the middle? You’ll still pay the 25% main rate. Sorry. But a sliding scale of ‘marginal relief’ reduces the final amount you need to pay.