Investor Presentaiton

PROVISIONS MOVEMENT IN PROVISIONS¹ ($m) 4,835 (202) (235) 6,011 Total Provisions Mar 20 Total Provisions Underlying collective Forward looking Sep 20 provision Economic Adjustment 221 (50) 5,745 Target sector forward looking adjustments Specific provision Total Provisions Mar 21 UNDERLYING CP Model outcomes based on point-in- time data . Forms baseline 1H21 release reflects improved environment and customer positions (1) Excludes provisions on fair value loans and derivatives • • . ECONOMIC ADJUSTMENT (EA) Forward view of additional stress across portfolio from base- line, according to 3 probability weighted scenarios (upside, base case & downside) Scenarios based on forward looking macro economic data and granular PD and LGD assumptions EA top-up required where probability weighted EA higher over the period (and vice versa) 1H21 EA release of $235m reflects improved economic outlook partly offset by changes to scenario weightings including reduced upside weighting (15% to 5%) given some upside now captured in base case² (2) Base case weighting now 65% (from 60% at FY20) and Downside weighting now 30% (from 25% at FY20) • TARGET SECTOR FLAS Considers forward looking stress incremental to EA changes $221m increase mostly reflects additional stress in aviation & mortgage exposures 25 25 National Australia Bank

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