Wholesale Banking Performance Analysis

Business Banking: Total Diverse assets^ Housing 31% Business 69% Property & Business Services 41% Construction 4% Portfolio quality* PD Model Upgrades 68% 67% 72% 73% Other 18% Retail Trade 7% 32% Accommodation, Cafes, Pubs & Agriculture Forestry and Fishing 13% Restaurants 5% Sep 10 5% Wholesale Trade Manufacturing 7% 33% 28% 27% Mar 11 Sep 11 Mar 12 ■Investment grade equivalent ■Sub-Investment grade Well secured - business products B&DD charge ($m) 13% 14% 14% 14% 600 27% 25% 25% 25% 400 0.75% 0.60% 0.45% 60% 61% 61% 61% 200 0.30% 0.15% 0 0.00% Sep 10 Mar 11 Sep 11 Mar 12 Sep 10 Mar 11 Sep 11 Mar 12 Fully Secured** Partially Secured Unsecured B&DD charge B&DD/GLAS (annualised) (RHS) ^ Based on product split 37 nab Based upon expected loss ** Based upon security categories in internal ratings systems National Australia Bank Business Banking: SME Business* Diverse assets^ Personal 36% Property & Business Services Business 64% 46% Other 13% Finance & Insurance Construction 8% Portfolio quality** PD Model Upgrade 62% 59% 62% 66% Retail Trade 38% 41% 38% 34% 8% Accommodation, Cafes, Pubs Sep 10 Mar 11 Sep 11 Mar 12 & Restaurants 8% 5% Wholesale Trade 6% Manufacturing 6% ■Investment grade equivalent ■Sub-Investment grade Well secured - business products B&DD charge ($m) 6% 6% 6% 5% 300 0.60% 250 25% 24% 24% 23% 0.45% 200 150 0.30% 69% 70% 70% 72% 100 0.15% 50 0 0.00% Sep 10 Mar 11 Sep 11 Mar 12 Sep 10 Mar 11 Sep 11 Mar 12 ■Fully Secured*** 38 nab IPartially Secured Unsecured Based on customer split SME business data reflects the nabbusiness segment of Business Banking which supports business customers with lending typically up to $25m, excluding the Specialised Businesses Based upon expected loss B&DD charge B&DD/GLAS (annualised) (RHS) National Australia Bank Based upon security categories in internal ratings systems

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