Dear Sir,
My answers are as follows:
If he takes a promissary note ,with undated cheques for the principal and interest amounts , will it be safe and adequate?
Ans: Yes, it is good idea but see that such amounts not to be advanced for more than three persons otherwise your friend will have to take money lending licenses.
Should he make a detailed loan agreement?
Ans: Just taking signed blank promissory notes and cheques are sufficient.
If so, how to make this agreement?
Ans: As for as possible agreements may be avoided since proving of such agreements is very hard.
should it be notarised and taken on a Rs 100/- stamp paper?
Ans: Yes.
should it be registered?
Ans: If registered it is more strong but you have to pay stamp duty on it.
If the property document is given as security , can he get it mortgaged and get encumbrance certificate in his name, will it suffice?
Ans: It must be registered and entry must be made in EC.
He wants to know, how to save capitol gains tax for this amount 1 Cr, of which cost of acquisition is 35 lakhs, He doesn't want to invest in a residential house or in capitol gains bonds as it has 5 yrs lock in period and mutual funds are risky.Finance bill 2017 , GOI has allowed for investing in some bonds with 3 years lock in. How do we know details about that?
Ans: The above questions may kindly be asked to any chartered accountant for accurate suggestions.