"Many already choose cremation because it's cheaper than burial, but this will put them in an invidious position because they have nowhere else to go."
A new private crematorium due to be built in Hastings soon will probably take business away from the council facility, and that is estimated to push fees even higher - to $851, an increase from the present $600.
"At this rate, cremation at Hawke's Bay Crematorium will be one of the most expensive in the country."
Ms Shanks said the council must be able to demonstrate all residents could afford cremation in its facility. "They must take account of the demographics of the region and tailor their financial modelling accordingly," she said.
Hastings Mayor Lawrence Yule has said the changes will look at minimising costs for families losing their loved ones.
"We want to have a public service available for competition and fee structures that are affordable."