La Grouw said presents were also included for children to give them something to unwrap on the day.
"It's about making Christmas Day festive. These families are recommended to the organisers and when the hampers are delivered it's a complete surprise."
Constable Marc van Krieken, who is behind the campaign, said last year they delivered hampers to about 55 families and this year they would give more than 200 hampers away.
Van Krieken said the money was a tremendous boost to the campaign and allowed the groups to buy items that wouldn't otherwise be included.
"This will allow us to bring some proper cheer rather than just provide the necessities. The money is going to a good place and will make a significant difference for a number of Rotorua families.
"Because of the donation from the trust, we will be able to help more families than we did last year."
Rotorua Trust chairman Stewart Edward said the other $5000 would be divided between the St John's Presbyterian Church and St Vincent de Paul Christmas appeals.
Edward said the Rotorua Trust's kaupapa was about making a better Rotorua for all, and the $15,000 donation would go some way to improving Christmas for those in need.
"We want to ensure everyone in Rotorua is able to enjoy a special Christmas meal with their family. There are people in our community who are working tirelessly to ensure Rotorua families aren't missing out on Christmas meals, and we're proud to be able to support the work they are doing."