Definition of pre-tax profit

Profit for a particular period of time before tax is taken away. [1]

There are a hundred different yardsticks for profit, and companies have a habit of using whichever flatters their performance the most.  The statutory ('FRS3') figure that a company must report is widely used . This includes all exceptional gains and costs, as well as things like interest, the cost of stock options and goodwill amortisation. [2].