Real estate transaction are suffered tax at the rate of 18%, but there is deemed fiction for 1/3 rd of the value is pertaining to land, hence rate of tax is 12% (ie, 2/3 rd of 18%)
There clearly mentioned that, value of land is 1/3 rd of total consideration and applicable rate of tax is 18% (but it is ammended subsequently at present rate of tax is 12%)