Given the minister did not get anywhere near answering that question, I ask it again. What is the impact on the federal budget bottom line of increases in royalties in states around Australia given Labor's promise to credit all their state royalties on iron ore and coal against the mining tax liability. Given the government is already confronted with a $120 billion budget black hole on the back of its latest spending spree, how does the government propose to plug this latest multi-billion dollar budget black hole of its own making?