As per sub-rule (2) of rule 3 of the Income Declaration Scheme Rules, 2016, where investment in any asset is partly from an income which has been assessed to tax, the undisclosed income represented in form of such asset will be the fair market value of the asset determined in accordance with sub-rule (1) of rule 3 as reduced by an amount which bears to the value of the asset as on the 1.6.2016, the same proportion as the assessed income bears to the total cost of the asset. This is illustrated by an example as under:
Investment in acquisition of asset in previous year 2013-14 is of Rs.500 out of which Rs.200 relates to income assessed to tax in A.Y. 2012-13 and Rs.300 is from undisclosed income pertaining to previous year 2013-14. The fair market value of the asset as on 01.06.2016 is Rs.1500. The undisclosed income represented by this asset under the scheme shall be:
1500 minus (1500 * 200 / 500) = Rs. 900.