...August 16, 2021 MELBOURNE (S&P Global Ratings) Aug. 17, 2021--S&P Global Ratings today said it has assigned its '###-' issue credit ratings to Westpac Banking Corp.'s (WBC; ##-/Stable/A-1+) proposed Additional Tier 1 Capital Notes 8 (CN8). We rate WBC's CN8 four notches below WBC's stand-alone credit profile (SACP) of 'a'. The starting point of the SACP reflects our view that it is unlikely that the Australian government's support for WBC and other Australian banks--if needed--would extend to hybrid capital instruments issued by the banks. To arrive at the rating on the WBC CN8, we deduct four notches from WBC's SACP reflecting the following factors: - One notch for the notes' subordinated status; - Two notches for the risk of partial or untimely payment; and - One notch for a nonviability contingent capital feature that would require WBC to convert all or a proportion of the notes into ordinary shares or write them off if a nonviability trigger event occurred. We have assessed the proposed...