BP Strathfieldsaye will donate all proceeds from its coffee sales during March to the Kristy Thomson Appeal.
BP Manager Ricky Smith said originally the service station was going to donate fuel vouchers but thought cash donations would be better.
"I was taking our banking to the Strath Hill Bendigo Bank branch and I speaking to one of Kristy Thomson's friends," he said.
"She asked if we would like to get on board and give them fuel vouchers.
"So I spoke to one of the owners and he said instead of doing that why don't we do the coffee sales for the month.
"I know (Kristy) has to go to Melbourne for (rehabilitation therapy) and I think they could use the money more than the fuel vouchers."
He said Beraldo has donated the coffee beans.
Mr Smith, who has six young children, said he was shocked by the tragedy that took place in Rosalind Park last year.
"I thought it was really sad," he said.
"We always wanted to do something like this."
Mr Smith said Vantage Fuels was a community-based company and was heavily involved in the Make A Wish Foundation.
"Being community-based we wanted to get involved in things that happen in our community," he said.
"This is just one of the things we wanted to do."
Mr Smith encouraged people to drop into the service station and buy a coffee.
"The more people come in and buy coffees, the more money we raise," he said.
Kristy Thomson suffered serious spinal injuries when a tree fell in Rosalind Park on December 30.
Her four-year-old daughter, Patiya May, died.
The service station is located on Strathfieldsaye Road.