The nation's biggest cattle company,  The Australian Agricultural Company, said extreme weather conditions across northern Australia have cost it more than $100 million in losses.

In reporting its full year financial results, the chief executive officer Hugh Killen confirmed a loss of EBITDA (earnings before interest, tax, depreciation and amortisation) of $182.7 million.

Mr Killen told investors the company had sustained stock losses of 43,000 head in record flooding on several Gulf of Carpentaria stations in February.