law: 39. Disposal of surplus.-
  After making provision for bad and doubtful debts, depreciation of assets and all other matters for which provision is necessary or expedient or which is usually provided for by bankers, the National Housing Bank shall transfer-
  (i) for a period of fifteen years, following the accounting year during which the National Housing Bank is established, the amount remaining (hereafter in this section referred to as surplus) such of the funds referred to in section 37 as the Reserve Bank may specify; and
  (ii) after the expiry of the said period of fifteen years, the National Housing Bank shall, after making provision for the funds referred to in section 37, transfer the balance of surplus to 1[the Central Government].