A forum member shared
My case was as common to most of us ie, Not enough money in the account few days back to application submission and then a sudden transfer of funds in the bank account and that account is shown as 'Proof of funds'. As you can see I got a 'Source of funds' request on August 20, 2015. I submitted following documents for the same:
1) An e-stamped affidavit (Article 4 Affidavit) citing my Father as Deponent about that big transaction via Cheque XXX dated XXX drawn on Bank XXX. Letter had my father's signature. This costed me Rs. 10.
2) An e-stamped Gift deed (Article 33 Gift) showing my father as Donor, me as a Donee. Also stating that these funds were out of his past savings, mentioning his PAN number and that he doesn't expect the money in return. Letter had me and my father's signature. This costed me Rs. 100.
3) Net-worth certificates of me, my father and my mother as on August 22, 2015, for the reason that my family hasn't exhausted all their savings to support me and that they can survive easily. This Net-worth certificate should be issued by a reputed Chartered Accountant on his letter-head. This costed me Rs. 500. CAs might demand more, but don't pay them more, choose another CA.
4) My Bank statement till August 22, 2015 showing the funds being untouched and only a large number of credits happening with very few debits.
5) I detailed LOE with all the transactions and explanation.
That means a maximum cost of Rs. 1000. You don't need to pay hefty amount and take the help of any consultancy for solving 'Source of funds' puzzle. Just include everything specific beforehand at the time of Application submission, so that they don't ask for Additional documents later (as they did in my case).
In a nut-shell here are what I suggest you submit at the time of AOR, to answer the questions of a sudden large transaction:
1) Gift Deed (Article 33 Gift)
2) An Affidavit (Article 4 Affidavit)
3) Net-worth certificates of your whole family from CA
4) Bank Statements showing all the transactions involved (Yes, include your father's bank account statement as well)
Note: No Notarization is necessary, since, you would be scanning and uploading original documents. Don't spend money on the lawyers roaming around in district courts for this.