Mayoral candidate Lyn Patterson said Masterton's services could be maintained without huge rate rises - whatever the Local Government Review outcome.
"It is council's duty to ensure ratepayers get value for money.
"My analysis of many documents related to the financial viability of local government change shows cost estimates, based on GWRC figures, are inconsistent.
"During this Local Government Review process I have queried major GWRC discrepancies and have yet to receive complete answers." She said she would look for efficiency gains across budgets.
Incumbent Masterton mayor Garry Daniell said if Wairarapa becomes a Unitary Authority the region would have certainty on rates being levied by councillors for local expenditure. "As part of a super city, our rates would be levied by a new council dominated by Wellington priorities.
"There is no certainty as to how Wairarapa expenditure would be assessed and the methodology of levying rates could change to our detriment," Mr Daniell said.
Unopposed South Wairarapa mayor Adrienne Staples said a Wairarapa unitary authority would have an annual budget of about $80 million. "Two-million dollars therefore represents 2.5 per cent, a relatively small amount.
"This should easily be managed through prioritising work rather than cutting services."
Carterton mayor Ron Mark did not respond.