May 4 (Reuters) - National Australia Bank Ltd NAB.AX
* HY cash earnings of $3.29 billion, up 2.3%
* HY total charge for bad and doubtful debts (b&dds) was $394 million, up $19 million or 5.1%
* HY on a statutory basis, net profit attributable was $2.55 billion compared to a loss of $1.74 billion for march 2016 half year
* Interim dividend unchanged at 99 cents per share fully franked
* "Group's CET1 target ratio remains between 8.75% - 9.25%"
* On a cash earnings basis HY revenue increased 1.8 percent
* CET1 ratio was 10.1 percent as at 31 March 2017
* "Operating environment for banks remains challenging" Source text for Eikon: ID:nASXcbm9Jg Further company coverage: NAB.AX