More than £8,000 has been raised for Wish Upon A Dream by The Sefton Group.
The group chose the charity for 2017-2018.
Now in its 12th year Wish Upon A Dream grants wishes for children on the Island who are sick or terminally ill.
The money was raised through collection boxes and a range of events including a sponsored car wash, a sponsored swim, a static bike ride, raffles for hotel accommodation, a charity bingo evening and a Christmas fair.
Group Chief Executive Officer Brett Martin says: "This is a very worthy local cause which has clearly captured the hearts and minds of the people of the Isle of Man.
"The Sefton Group is as committed to its corporate social responsibilities as it is to operational excellence.
"As a leading Isle of Man customer-facing business it is important for us to be 'a good neighbour' and a valued partner in the local community."
Wish Upon A Dream Founder Lesley Turnbull says: "The Isle of Man is noted for its strong sense of community, not only among the general public but also within the business sector, so I’m enormously grateful to all the Sefton Group’s customers and staff for supporting us with such enthusiasm and raising this fantastic sum of money so that we can continue to make wishes come true for children enduring life-altering conditions with remarkable courage."