Dear Sir,
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Amount of capital gain would depend upon sale price, sale date, purchase price and purchase date.
As the date of acquisition falls prior to 1 April 2001, you have a choice to consider the Fair Market Value (FMV) of the property as on 1 April 2001 as your acquisition cost.
It is advisable to get the FMV/ valuation of the property as on 01.04.2001 done from the registered valuer.
Government-approved valuers follow a standard process for the valuation and provide a detailed report.
“Assumptions of any type for consideration of value shall not be entertained by the income tax department. In case of any enquiry, the department will consider the value stated in the valuation report from a registered valuer,"
The capital gain will be taxed at 20.8%. You can save tax by investing the sale amount in a new house or purchasing 54EC capital gain bonds.
For further discussion and clarification you can avail phone consultation on tax full.