Coles reported underlying EBIT down 5% for 2H23 in its Supermarket division. The drop in profit margins was a function of both gross margin pressure from rising theft and higher operating cost growth. Unfortunately for the company, these trends will persist into FY24e leading to a drop in EBIT margins. FY24e should be a trough in earnings. However, margin expansion is largely contingent on its capex projects delivering a return and it may take 2-3 years to prove success on this front.