The Designated Activity Company (DAC) is one of the most contemporary company types in Ireland. DACs are limited companies in nature and are particularly appropriate for entities who want to set up a unique business model, built upon their specific preferences, unlike in Private Companies Limited by Shares (LTD) whereby the shareholders have unlimited powers. Such entities usually have a detailed description of a clear source of revenue for the business stipulated in their constitution, instead of giving unlimited trading authority, as is the case with most limited companies. As a result, the creed of ‘Ultra Vires’ continues to hold as true in these business entities. DACs keep their Memorandum and Articles of Association as constituent elements of the complete constitution.