With Effect from 2nd May, 2008 there has been amendment in the Bombay Stamp Act i.e.
Amendment to Article 48(f)
The stamp duty on the Power of Attorney given even if without consideration with the right to sell or transfer the immovable property is now payable as per Article 25 (conveyance ) of the Bombay Stamp Act i.e. 5%. However if such POA is given to a family member then the stamp duty is payable @ Rs. 500/-