About 120 local sponsors are supporting the event and have donated $35,000 worth of prizes.
"They are still coming in and several business have actually approached us offering prizes," he said.
"It's humbling for the police and it shows the level of support for the work we do. It has been fantastic."
Guest speaker is All Black legend Michael Jones who has been described by one All Black coach as "almost the perfect rugby player". He will be joined by tonight's MC, Rob Lemoto from Police Ten 7.
Entertainment includes singer Kelly Makiha, "who committed to this event for Steve without hesitation," said Sergeant Wilkinson. Bailey Howard, 19, will also sing.
Tickets are still available for tonight's event, although the vast majority have sold.
All those involved in the entertainment, including speakers and MC, audio visual and lighting, room decoration from Activities Unlimited are helping free of charge, said Sergeant Wilkinson.
The fund will be used to help sworn and non-sworn staff and their family members who suffered trauma, illness or injury.
Tickets can be bought from www.nduro.co.nz or by using the "book now" link on the Rotorua Police Welfare Fund Facebook page.
What: Rotorua Police Charity Night and Auction
Where: Sir Howard Morrison Performing Arts Centre
When: Friday 5.30pm - 11.30pm
Buy Tickets - 07 213 1809, GA $75