New Zealand's mostly Australian-owned banks, which all reported very strong earnings over 2011-12, are not as profitable as they appear from a return-on-equity perspective, the NZ Bankers Association said.
The association said independent analysis undertaken by Massey University showed that retail banks' average return on equity over the last five years fell in the middle of the range compared to NZX listed companies with a minimum market capitalisation of $100 million over the same period.
"We wanted some analysis which put bank profitability in the context of other New Zealand businesses because there are a lot of views on bank profitability which we felt were overstated," said the association's chief executive, Kirk Hope, said.
Average bank returns on equity from 2008 to 2012 ranged from 7.5 per cent to 16.3 per cent, well below the top average return on equity of 31.7 per cent.
The analysis showed that banks fell in the middle of the range of profits compared to NZX listed businesses, Hope said.