It is the poorest level of sentiment since March 2011 when a net 20.8 per cent expected things to get worse.
BNZ chief economist Tony Alexander said this month's result again suggested the Kiwi economy had still not gathered sustained upward momentum since exiting the recession in 2009.
There were two main reasons for the fall in confidence, Alexander said.
"Firstly, a deterioration in the situation in Europe. And secondly, the pull-back we have seen in price of commodities."
Farmers had become more cautious about export prices in the coming season and businesses selling to farmers were reporting budget restraints, he said.
One North Waikato dairy farmer said negative outlook for the season was due to commodity prices.
"A lot of salespeople (have been) knocking on our door trying to sell their wares. I get the impression competition is tough out there with many competing for the farmers dollar," the farmer said in a survey reponse.
"If you are a few days late paying an account you get a friendly phone call. Cash flow must be tight."
Construction was improving, as were recruitment, and printing and packaging, but retailing remained a weak sector.
Residential real estate remained strong with good numbers of buyers but few listings on average.