Australia's biggest bank is set to reveal how its home loan business has been impacted by government policy changes, which are already weighing on the property market. Commonwealth Bank of Australia chief executive Matt Comyn will announce its full-year earnings on Wednesday, with analysts expecting a record full-year cash profit of $10.87 billion, after the bank made $5.4 billion in the first half. However, economists deemed it a "hawkish hold" because the central bank expressed a bias toward future rate hikes. By that metric - which implies investors are paying almost $29 for each dollar of earnings - CBA is likely the most expensive bank stock in the developed world, experts have said. US banking giants like Bank of America and Morgan Stanley trade at price-to-earnings ratios of around half that.