Dec 17 (Reuters) - Perpetual PPT.AX on Tuesday said the independent expert of the firm has opined that the asset manager's plan to sell wealth management and corporate trust business to KKR KKR.N would not serve best interest of investors after tax bill blowout.

The company's A$2.2 billion ($1.40 billion) deal with the buyout giant is at risk of falling after the firm was given a tax bill which was way higher than its estimate and revealed higher liabilities and lower shareholder returns.

($1 = 1.5711 Australian dollars)

(Reporting by Rishav Chatterjee in Bengaluru; Editing by Vijay Kishore)

((Rishav.Chatterjee@thomsonreuters.com;))