Moody 's credit rating agency has warned Australia 's large banks that they may have their high ratings downgraded as prolonged low interest rates in the country continue to put pressure on the banks ' credit profiles . The report also suggested that low wages and high housing prices throughout Australia are among the tail risks for countries with an increase in household debt and overall credit - to - GDP ratios . Last week rival credit rating agency Standard & Poor's placed their AA- ratings of the major banks on a negative outlook, reflecting the negative outlook of the AAA Australian sovereign rating. Last week , National Australia Bank , Westpac , ANZ and Commonwealth Bank had their ratings downgraded by Standard & Poor 's to AA- with a negative result .
Moody 's credit rating agency has warned Australia 's large banks that they may have their high ratings downgraded as prolonged low interest rates in the country continue to put pressure on the banks ' credit profiles . The report also suggested that low wages and high housing prices throughout Australia are among the tail risks for countries with an increase in household debt and overall credit - to - GDP ratios . Last week , National Australia Bank , Westpac , ANZ and Commonwealth Bank had their ratings downgraded by Standard & Poor 's to AA- with a negative result .