MELBOURNE (Standard&Poor's) Feb. 7, 2013--Standard&Poor's Ratings Services said today that National Australia Bank Ltd.'s (NAB; AA-/Stable/A-1+) announcement concerning its 2013 First Quarter Trading Update was consistent with Standard&Poor's 'AA-' long-term issuer credit rating on the bank. Our outlook on NAB remains stable. Key information included in NAB's announcement concerning its profitability, asset quality, capital, and funding performance over the first quarter gives us no material concerns, at the current rating level. Further, our outlook for key financial metrics over the short-to-medium term is that it is likely that they will remain broadly consistent with our current view of the bank's credit standing. Our next milestone is likely to be an evaluation of NAB's announcement,