The scathing review of the financial sector by royal commissioner Kenneth Hayne continues to hit profit margins, with Commonwealth Bank of Australia the latest major player pushed to announce further remediation measures, at a cost of at least A$45 million each year in fees foregone.In an announcement to the ASX yesterday, Michael Venter, chief operating officer for CBA Wealth Management, outlined four further courses of action that he said would "form part of the bank's response to specific issues identified this year through the royal commission":•    review any advice fees charged to deceased estates across all its advice licensees and refund with interest any instances where unauthorised fees have been charged, with an initial search of 142,000 accounts showing that 12 deceased estates were charged unauthorised advice fees between April and June 2018;•    remove certain fees on legacy wealth products from January 2019 - an action the bank said would "save customers approximately $25 million annually";•    rebate all grandfathered commissions to Commonwealth Financial Planning customers from January 2019, which CBA estimates will benefit around 50,000 customer accounts by approximately $20 million annually; and•    provide all CFP customers with an option to renew their ongoing service arrangements every two years.Venter added that a broader review of the past seven years of accounts from deceased estates is underway across the CBA's advice licensees. Where unauthorised fees are identified, they will be refunded with interest. The issue of grandfathered commissions has long been a sore point with the major players, which have agreed that the payments should be removed, but have been equally reluctant to achieve first mover status: "We support the removal of grandfathered commissions from superannuation and investment products across the wider industry and believe a legislative approach should be considered," said Venter, without elaborating.The CBA estimated that overhauling its poor advice processes, the remediation of previous poor behaviour by its wealth advisers over the past six years and implementing its Future Advice Model has seen it shell out approximately $580 million.Through its Open Advice and Service Delivery Reviews, and other programs, Commonwealth Bank conceded it has also paid out approximately $270 million in compensation, including interest, to customers who were provided with poor quality advice or charged fees where service was not provided.