Tuohy Associates sales and marketing manager Mike Godinet, of Christchurch, told Destination Queenstown members the event would be held from March 12-15 next year.
"There's no question at all it will be any other date," he said.
Godinet said the New Zealand Open would become part of a three-event swing to include the Moonah Classic, near Melbourne, from February 26 to March 1, and the New Zealand PGA Championship at Clearwater, in Christchurch, running from March 5-8.
Godinet said he had been receiving daily calls from golf fans who wanted to know when they should book holidays and accommodation in Queenstown to attend the Open.
"The only reason for no formal announcement is because there are three or four contracts that have been ratified but haven't been signed by four or five parties.
"While we're more than confident everything is in place, we're like everyone else and can't announce something we haven't signed off on."
Last week, New Zealand Golf boss Bill MacGowan told the Otago Daily Times he was unlikely to confirm the dates of the Open until the end of this month at the earliest.
When that announcement is made, it is expected it will also be confirmed the Open will be co-sanctioned by the second-tier American Nationwide tour.
The first tournament at The Hills was co-sanctioned by the Australasian and European tours.
A change to the European Tour schedule left no room for the New Zealand Open in the pre-Christmas window.
Godinet said another hold-up in officially announcing the date had been the Ryder Cup, to be held in Kentucky next week.
"Ben Sellenger, director of tournaments for the Australasian PGA Tour, is on his way to the Ryder Cup and won't be back in Australia until the end of September. Once he's back, everyone signs."
Godinet attended Destination Queenstown's quarterly meeting yesterday to outline New Zealand Open business opportunities for Wakatipu operators and introduce Tuohy Associates sales manager Helen Farrer as a Queenstown contact.
He described the inaugural Open at The Hills as an "outstanding success" that had revitalised the event, generated $20 million for the Wakatipu and had been watched in 230 million homes worldwide.
About 35,000 people walked down the main street of marquees during the four-day open last year.
The Hills operations manager Ian Douglas said the New Zealand Open date was in a good month when the weather was historically more settled.
He said the date confirmation allowed staff to focus on the job, although they had predicted the date given the other tournaments.
