The running costs of the proposed Hundertwasser Art Centre will be underwritten by Northland Inc if the HAC goes ahead.
The offer from the economic development group could appease HAC opponents, many having concerns about the ongoing costs of the $13million centre to ratepayers.
The Whangarei District Council will meet on Wednesday to vote on whether to proceed with the project. This past week the project's $5million nonratepayer fundraising goal has been reached, to go with $8million pledged by the WDC.
However, it is no guarantee the project will proceed, with the HAC needing to survive Wednesday's political vote.
Northland Inc chief executive officer David Wilson said the group, which is largely ratepayer funded, believed the HAC would be a boon for the local economy and was well worth supporting.