Raikes has been chair of the board for the institute's national convention for the past three years. She collected the award from Fiona Reynolds, director general of the National Trust.
Raikes joined the National Trust in 1983 as a junior press officer and became fundraising director in 2001. Her team now brings in £80m a year.
"Gill's contribution has been colossal," said Lindsay Boswell, chief executive of the Institute of Fundraising and an awards judge. "She has pulled together a most extraordinary range of talents into the convention board and produced thousands of fantastic sessions."