Whitehaven Coal (ASX:WHC) reported a profit of $305.8 million for the six months through December, up 19 per cent from $256.2 million in the same period a year earlier.
Sales revenue for the mining company was up 11 per cent to of $1,270.1 million.
Underlying EBITDA before significant items is $550.8 million, up 12 per cent.
Directors declared an interim dividend of 15 cents a share, up from 13 cents a year ago.
They are also set to pay a special dividend worth 5 cents per share after higher coal prices across Asia.
Shares in Whitehaven Coal (ASX:WHC) are trading 6.68 per cent lower to $4.47.