Southeast Queensland's devastating floods have killed a dozen people, and authorities believe the disaster will cost the state more than $2.5 billion.
The death toll rose to 12 when a man's body was found after his car was swept into floodwaters in the South Burnett Region on Sunday. Another man is still missing.
Queensland Treasurer Cameron Dick said the floods, which have been going for two weeks but peaked last weekend, will cost the state at least $2.5 billion.
Treasury estimates the cost of fixing damaged public infrastructure like roads, bridges, railways and ports will be at least $500 million, while the insurance claims on damaged homes and businesses are likely to top $936 million.
Mr Dick said the floods were also expected to wipe 0.25 per cent, or $1 billion, in economic growth from the current quarter.
"Although the weather event was pretty short, it was only about three days in duration, the cost of this weather event will be very significant," he told reporters on Monday.
Mr Dick said the $2.5 billion estimate is only preliminary and he expects the damage bill will increase, particularly as people cleaning up their homes and businesses lodge insurance claims later and councils make more detailed assessments.
He said the 2022 floods won't cost as much as the 2011 floods or Cyclone Debbie in 2017, Oswald in 2013 or Yasi in 2011.
"But for people who are throwing out treasured possessions or are hosing out mud from their homes in stinking heat, it doesn't really matter which flood costs more," Mr Dick said.
The treasurer has ruled out any new taxes or a levy, like the one brought in after the 2011 floods, to pay the bill, and he expects the state to return to surplus in 2024/25 as planned.
"We're holding tight to that promise, notwithstanding the natural disasters, but we never know what's around the corner," he said.
Federal Government Services Minister Linda Reynolds said 89,000 disaster claims worth $104.8 million have been granted in Queensland over the past seven days.
"The significant number of claims paid reflects the size and scale of this flood disaster," she said in a statement.
More than 1350 Defence Force personnel are helping with the recovery effort, focusing on the towns of Gympie, Gatton, Esk and Grantham as well as suburban Brisbane and Logan.
Commander of Operation Flood Assist, Major General David Thomae, said the ADF has been involved from February 25 when the Commonwealth activated it's disaster plan.
Search and rescue missions continued in Queensland in the days that followed before the disaster shifted to northern NSW where reserve soldiers supported air operations, he told a briefing on Monday.
The danger from the floods remains, with soaked catchments ripe for flash flooding and the Bureau of Meteorology forecasting possible severe thunderstorms later this week.
A line of storms triggered flash floods across the broader region again on Sunday night, including the South Burnett area where the man in his 60s died.
A woman, also in her 60s, managed to get out of the car and hang onto a tree branch before being rescued by onlookers.
Another three people, a man in the South Burnett area and two women on the Gold Coast, were rescued after their cars were swept away by flash floods on Sunday.
An elderly man remains missing after falling from a boat into the Brisbane River near Breakfast Creek nine days ago.
