Hastings Mayor Lawrence Yule agreed savings would reach big numbers.
"It would be somewhere between $500,000 and $1 million," he said.
Mr Dalton said the statement was, "absolute garbage". He said replacing four mayors and a chair of the Regional Council with one leader would not equal cost cuts.
"The salaries of mayors and chairs are calculated on a complex formula ... if you have one mayor that one mayor will get paid a lot more than any of the mayors are currently paid, the deputy mayors will get more.
"It's the same at the level of chief executive, the fact is chief executives will get paid close to double what the current ones are paid but the workload will be such they won't be able to cope alone, they will need help too."
Not only would there be "no savings" Mr Dalton felt the move would result in "over-populated" governance and senior management.