KPMG says it's determined to give back to the Island by raising money for the community.
Last year it raised £30,000 for the Alzheimer's Society - this year all money will go to Wish Upon A Dream.
Staff will host a family fun day called SunPlay with bouncy castles, face painting and games for children.
Justine Howard is in charge of corporate social responsibility and explains why it's so important for companies to give back: