Australian mortgage holders already grappling with elevated borrowing costs are bracing for fresh financial pressure, with top economists warning that stronger-than-expected inflation data due Wednesday could trigger another Reserve Bank of Australia (RBA) interest rate increase as early as August. The warning comes as spillover effects from the US-Iran conflict continue to ripple through global supply chains and domestic price pressures, complicating the central bank’s long-running fight to bring runaway inflation back to target.