Coal royalties are expected to deliver an extra $5.2 billion into the Queensland government’s coffers this financial year alone, according to the state’s midyear budget update, to be released on Wednesday.

In further evidence of why Queensland Premier Annastacia Palaszczuk does not want to introduce a coal price cap as part of a national energy market intervention, the midyear update will reveal coal and LNG royalties are expected to deliver an extra $6.6 billion over the next four years.