law: The Regional Rural Banks Act, 1976
  6. Issued capital
  1.  The
  
  issued capital of each Regional Rural Bank shall be twenty-five lakhs of
  
  rupees.
  2.  Of
  
  the capital issued by a Regional Rural Bank under sub-section (1), fifty per
  
  cent shall be subscribed by the Central Government; fifteen per cent by the
  
  concerned State Government and thirty-five per cent by the Sponsor Bank.
  3.  The
  
  Board may, after consultation with the Reserve Bank, the concerned State
  
  Government and the Sponsor Bank and with the prior approval of the Central
  
  Government, from time to time, increase the issued capital of the Regional
  
  Rural Bank; and, where additional capital is issued, such capital shall also be
  
  subscribed in the same proportion as is specified in sub-section (2).