The merger of three lenders to create a listed 'heartland' bank now has the backing of all investors.
Pyne Gould Corporation, the Canterbury Building Society, and the Southern Cross Building Society want to create a $2.2 billion bank and list on the stock exchange.
The final group of depositors from Canterbury Building Society approved the deal on Friday afternoon.
That now paves the way for court orders to be approved by 16 December, which effectively makes the deal unconditional.
The merger still needs regulatory approval, but the new entity is hoped to be established by 7 January.