Aug 14 (Reuters) - National Australia Bank Ltd NAB.AX :
* Q3 CASH EARNINGS COMPARED TO THE PRIOR CORRESPONDING PERIOD WERE DOWN 3 PCT
* Q3 EXPENSES ROSE 2 CPT
* Q3 CREDIT IMPAIRMENT CHARGES ROSE 9 PCT TO $203 MILLION AND INCLUDED $25 MILLION OF ADDITIONAL COLLECTIVE PROVISIONS
* AS AT JUNE 30, GROUP CET1 RATIO 9.7 PCT PERCENT
* Q3 REVENUE UP 1 PCT
* Q3 NET INTEREST MARGIN "DECLINED SLIGHTLY"
* EXPECTS TO RECOGNISE ADDITIONAL PROVISIONS IN THE 2H18 RESULT
* ADDITIONAL PROVISION COSTS WILL BE EXCLUDED FROM THE EXPENSE GROWTH GUIDANCE OF 5-8 PCT FOR FY18
* "ROYAL COMMISSION IS CHALLENGING US WITH ITS FOCUS ON WHERE WE HAVE LET CUSTOMERS DOWN"