Deemed consideration based on stamp valuation may govern capital gains computation; assessing officer can seek valuation review. Section 50C deems the stamp valuation adopted by a state authority for stamp duty to be the full value of consideration for capital gains where the declared consideration is lower. If the assessee disputes that stamp valuation exceeds fair market value, the Assessing Officer may refer valuation to a Valuation Officer and apply specified procedural and valuation provisions from the Wealth-tax Act; however, if the referred valuation exceeds the stamp valuation, the stamp valuation is still taken as the full value for tax purposes.