law: The Black Money (Undisclosed Foreign Income and Assets) and Imposition of Tax Act, 2015
  Chapter VI
  Tax Compliance for Undisclosed Foreign Income and Assets
  59. Declaration of undisclosed foreign asset.-
  Subject to the provisions of this Chapter, any person may make, on or after the date of commencement of this Act but on or before a date to be notified by the Central Government in the Official Gazette, a declaration in respect of any undisclosed asset located outside India and acquired from income chargeable to tax under the Income-tax Act for any assessment year prior to the assessment year beginning on 1st day of April, 2016-
  (a) for which he has failed to furnish a return under section 139 of the Income-tax Act;
  (b) which he has failed to disclose in a return of income furnished by him under the Income-tax Act before the date of commencement of this Act;
  (c) which has escaped assessment by reason of the omission or failure on the part of such person to make a return under the Income-tax Act or to disclose fully and truly all material facts necessary for the assessment or otherwise.