NOOSA Independence Alliance has sent the State Government a revised estimate for its cost of de-amalgamation that halves the cost to about $2 million.
NIA spokesman and former Noosa mayor Noel Playford is trying to counter claims that the Sunshine Coast cannot afford the split, which has been priced by a consultant as almost $32 million.
He has labelled a vote by the regional council in favour a Coast-wide vote on a Noosa split as a lot of "hot air".
"I can now reveal that a critical analysis of the council's cost report has been completed and sent to the Minister for Local Government (David Crisafulli)," Mr Playford said.
"It shows that the total direct costs to both councils of the de-amalgamation will be about $2 million.
"The bottom line for residents is that the cost can easily be met without rate increases or reductions in service."
Mr Playford said the analysis used the same principles as the Queensland Treasury Corporation used in assessing the costs of amalgamation.
Mr Playford said the lower NIA estimate came about because of new information from inside council itself.
"The council cost report acknowledges that the separation workload is not expected to be as intense as the amalgamation of the three councils," Mr Playford said.
"Yet it exaggerates the cost to many times the $4 million cost of amalgamation as assessed by Queensland Treasury Corporation.
"Clearly the latest $2 million estimate is more credible than council's inflated cost."
Mr Playford said the vote by the outgoing Sunshine Coast council to ask the Premier Campbell Newman to include the entire Coast in a vote on de-amalgamation is irrelevant.
"Residents in the Noosa region do not need to worry - the council resolution will not make any difference," Mr Playford said.
"Most councillors might want a vote for all of the Coast, but the Premier gave an unequivocal commitment that would not happen.
"Noosa people will pay for the separation, and only they will vote.
"So the council resolution is really just hot air."