However, the mayor was among those who voted against Mr McLachlan's motion, with other councillors accusing him of political grandstanding. Only councillors Phil Halse and Shelley Deeming supported him.
Cr Greg Martin said the move was "self promotion", while others said the motion was too general.
The mayor could not be reached yesterday to elaborate on why she had voted against the motion. In the chamber yesterday, she thanked Mr McLachlan for bringing up the matter but said the authority would already have considered every option on how to set pay rates.
Mr McLachlan said he simply wanted to start a conversation. Councillors' salaries were calculated using a formula that took into account job size, the area's population and council expenditure. He said there were other options " pay could be tied to the percentage increase in the district's average household income or to the Consumer Price Index.
"I'm asking a simple question. Whether we are happy with the current system or whether we want a change," he said.
Local Government New Zealand president Lawrence Yule said pay rates were going up because councillors' jobs were becoming increasingly complex.
"Councillors don't like big increases, I get that. But equally, when the job is getting more and more complex, the authority is reflecting that."
Committee chairs along with with the deputy mayor would receive $58,500 in the 2015/16 financial year, up 4.9 per cent. Other councillors received a 4.9 per cent raise to $46,800. Mayor Mai got an additional $4050, from $130,780 to $134,830.