The F1 chief executive said a new contract will be signed "as soon as we get the lawyers sorted".
Ecclestone's comments follow reports from within the state government that race organisers are pushing hard for a better financial deal.
But the 83-year-old Briton insisted: "It will happen, don't worry about it."
Ecclestone said the government is no longer arguing with F1 over money.
"I think that's all been sorted," he said. "It's just the bits and pieces. It will happen."