Hello,
While filing the income tax return, there are two declarations under the Capital Gai Head, 1. Sale Price and Value of the property as per the Stamp Valuation Authority. Since you would be declaring the actual sale price Rs. 80 Lakhs in your income tax return and pay tax accordingly, there won't be any problem for you from the department. The receipt of Rs. 80 Lakhs actual sale price in a bank account would be sufficient proof. No addition would be made in the Other Sources Head for the difference amount since you would pay the due tax on the capital gain income.
But declaring Rs. 80 Lakhs as sale price would sure shot fetch notice to he buyer for the stamp duty due on the difference amount, as evaded by the buyer.
Regarding TDS, TDS deduction is the responsibility of the buyer. And in your case, since the buyer is registering the property at Rs. 52 Lakhs, he would deduct TDS on the same and not on Rs. 80 Lakhs. Even if he deducts TDS at Rs. 52 Lakhs, this won't be an issue for you since you would be declaring the correct Capital Gain and pay due tax on it in your income tax return.
I hope that this answer satisfies your requirements.
Regards,
CA Hunny Badlani