Masterton mayor Lyn Patterson said yesterday indications were that the departure of Christchurch may not affect the costs of the trial to others.
"But we are still waiting to see what Dunedin, Wellington and Marlborough decide."
Masterton uses electionz.com as its election service provider and had all 10 of the original councils stayed on board it was estimated the cost of next year's election would rise by $60,043.
Of that $21,466 would be the district council's share and the remainder would be spread across the five other organisations that are up for election within the district.
Warwick Lampp, of electionz.com, said while it was unfortunate Christchurch had pulled out it would be about two weeks, by which time all the councils should have responded, before the financial viability of proceeding with a trial was established.
An online voting trial would ultimately be a decision made by central government and would mean voters would still receive postal voting papers but these would be coded to allow them to vote online instead of returning them.