Avoid real state transactions in cash

Circle rateor Actual consideration which ever is Higher will be taken as your Consideration for Capital Gains

Yes for calculating capital gains but what about for stamp duty? Can the registration of property be done on circle rates while the acutal consideration is higher?

Same will be applicable for Stamp Duty. Which ever is Higher will be considered. See Stamp Duty Act / Rules of Your State & If you are from AP then see AP Stamp Duty Act & Rules. For other states there should be similar Acts & Rules of the State. & as for Income tax Provision is concerned for Capital gaing see Sec 50C