Faulty mortgages and foreclosure abuses have cost the nation’s five biggest home lenders at least $65.7 billion, according to a tally by Bloomberg News, and new claims may push the industrywide total to twice that amount.

Bank of America, the largest US lender, had the biggest costs, totaling $39.1 billion since the start of 2007, according to data compiled by Bloomberg. JPMorgan Chase, ranked second by assets, followed with $16.3 billion, and Wells Fargo, the biggest US home lender, had $5.09 billion, the data show.

The costs have eclipsed predictions from bankers and analysts that lenders would suffer only modest damage from what BofA CEO Brian Moynihan has called “the mortgage mess.” FBR Capital Markets Paul Miller said costs for all banks could surpass $121 billion.