2000 children on KidsCan waiting list
The charitable trust is asking the public to donate $15 each, which will help to feed a child for one week.
The funding will go towards feeding 15 percent of children in New Zealand who live with food insecurity.
KidsCan's founder and chief executive Julie Chapman said families on low incomes were doing it tougher than ever before.
"They can't absorb the rising cost of living, and by the end of the week the food runs out. It's an awful way to live," Chapman said.
The cost-of-living crisis was also affecting donations, with the number of monthly donors dropping for the first time in KidsCan's 17-year history.
KidsCan was helping to feed 44,000 children each day in more than 1000 schools and early childhood centres nationwide and there were 2000 children on the waiting list.
The charity had also seen a spike in applications for hot meals, with an increase of 33 percent from last year.