The Gympie Chamber of Commerce says several traders will not be reopening in the south-east Queensland city's CBD after repeated flooding.
Chamber president Ben Ellingsen says at least two businesses have decided to move to higher ground after four major floods in a year.
"At this stage what the chamber of commerce has heard is there's at least two who are definitely going to be moving to different areas," he said.
"Others of course need to deal with their own legal arrangements with regard to lease agreements, who are probably hamstrung by that and would perhaps like to but just can't at this stage."
He says most of the 40 flood-affected businesses have now reopened.
"The sunshine that's been shining over the last few days is a welcome relief for a lot of people," he said.
"Most of our business houses that were affected are either back up trading or in the process of doing so.
"It's very much full steam ahead and back into it so they can start trading and start making some money."
© ABC 2013
12:38 EST Tropical Cyclone Jack has rapidly developed over the warm waters of the Indian Ocean in the past 24 hours, making it the 10th system to be named this season.