law: Chartered Accountants Act, 1949 
  7. Members to be
  
  known as Chartered Accountants
  Every member of the Institute in practice shall, and any other
  
  member may, use the designation of a chartered accountant and no member using
  
  such designation shall use any other description, whether in addition thereto
  
  or in substitution therefor:
  PROVIDED  that nothing contained in this section shall
  
  be deemed to prohibit any such person from adding any other description or
  
  letters of his name, if entitled thereto, to indicate membership of such other
  
  Institute of Accountancy, whether in India or elsewhere, as may be recognized
  
  in this behalf by the Council, or any other qualification that he may possess,
  
  or to prohibit a firm, all the partners of which are members of the Institute
  
  and in practice, from being known by its firm name as Chartered Accountants
  Comment:  Members of the Institute in practice has
  
  to use the designation of Chartered Accountants. (1984) 56 Com Cas 183