It could cost $15 million to negotiate any treaty deal for Ngapuhi the country's largest tribe, a figure that emerged at a rancorous mandating hui.
Called by Tuhoronuku, a tribal body seeking the mandate to negotiate on behalf of a population it estimates numbers 140,000, the meeting in Avondale on Friday was the first of 20 planned for throughout the country and Australia.
In 2009 Te Runanga a Iwi o Ngapuhi set up to Tuhoronuku. Sonny Tau is runanga chair of the first group and interim chairman of the second.
On behalf of the runanga he wrote to Treaty Negotiations minister Christopher Finlayson saying the tribe wanted to complete negotiations "as efficiently and effectively as is possible.
"As a way forward, we are seeking a funding commitment from the Crown of up to $15m to complete negotiations and have this amount deducted from the final settlement quantum."