From time to time we have had occasion to refer to earnings per share in terms of the new ‘imputation’ system of company taxation. This is a somewhat complex system and we have asked our Financial Correspondent to explain in some detail what is involved. In attempting an explanation, he has found it useful to compare the present system not only, as others have done, with the preceding corporation tax system inaugurated by Mr Callaghan in his 1965 Budget, but also with the earlier profits‐cum‐ income tax system. There are of course many other systems of company taxation, but for purposes of explanation a comparison of the three systems — profits‐plus‐income tax, the Callaghan‐type corporation tax, and the imputation system—is sufficient.