TRENZ , which is being held at the Rotorua Energy Events Centre, will also inject around $2 million into the local economy, including hotel accommodation, transport, meals, functions and the hundreds of thousands of dollars spent staging the event.
Rotorua mayor Steve Chadwick said hosting large events was something the city was showing it could do well and residents should be proud of.
"The increase in economy is great but it's also a chance to showcase Rotorua," she said.
"We've got the best in the industry here. We're becoming great hosts for large events; this is sandwiched in between Crankworx and the local-government conference. We're showing our strengths nationally."
She said she was looking forward to seeing what new products were launched and for any Government tourism announcements which were typically made at Trenz.
Explore Central North Island (ECNI) collective chairman Rhys Arrowsmith said Trenz was the most important way the ECNI regions could showcase themselves to the world.
"This part of New Zealand offers visitors huge diversity, everything from the country's longest ski fields, premium wineries, cultural and geothermal wonders, the largest southern hemisphere lake to an active volcanic island, top surf beaches, pristine rainforest, subterranean cave systems and the Hobbiton movie set.
"Hosting Trenz in the traditionally quieter month of May is an added bonus. We are looking forward to promoting this exceptional part of New Zealand."