Australia's Queensland government has decided to increase the coal royalty regime to obtain additional revenue. Before the decision, the royalties were frozen for almost a decade.

The current royalty rate that Queensland's coal mining firms have to pay is 7% for prices up to and including A$100/ton, 12.5% for prices from A$100 to 150/ton, and 15% for prices above A$150/ton.

From July, the new decision extends that prices exceeding A$175/ton will be charged 20% of royalty, 30% for prices over A$225/ton, and 40% for prices above A$300/ton.

Queensland's coal mining firms indicated that new tiers will obstacle new investment.