As the foundation's assets grew so too did the benefit to the community, Mr Bell said.
"As our asset base grows then the amount of donations grows as well ... at the moment our base is approximately $168 million. Last year it was around $152 million."
Organisations work together to provide for the community, Mr Bell said.
"We are one piece in the jigsaw puzzle. Quite often we work together with funders and that's happening more often," he said.
"It's really really rewarding. It's great when you go and see the changes and improvements that our donations make to organisations or groups within our community. It's pretty neat to see, particularly young people getting the benefits of what we do."
New Zealand was a "rare breed", Mr Bell said, as other countries relied on family wealth for philanthropy.