Intelligent Giving will close at the end of August because of a lack of funds, the donor advice charity announced today.
The charity will be deregistered and its work will be taken over by another donor advice charity, New Philanthropy Capital, which will inherit its brand, database and methodology.
Richard Marsh, the former director of the Impact Coalition who took over as interim director of Intelligent Giving in May, told Third Sector he would leave the charity when its work is transferred to NPC. He said he did not have a new job lined up but was available for consultancy work.
Marsh said it was clear when he took on the role that Intelligent Giving was in a "difficult and precarious" financial situation.
"I presented a number of funding models to the trustees and they decided it was better to look at a merger than to carry on going and risk bankruptcy," he said.
Martin Brookes, chief executive of NPC, told Third Sector it would continue to run the Intelligent Giving website and it intended to maintain its branding. He said it had not yet been decided how much money NPC would invest in Intelligent Giving.
Adam Rothwell, the former director of Intelligent Giving who left in May to become a history teacher, told Third Sector: "Intelligent Giving never had a clear, sustainable funding strategy. It was funded by a small group of donors who were not endlessly wealthy, and it was very difficult to get grants to support our work.
"Being taken over by NPC was the best thing that could have happened to Intelligent Giving."
The charity was founded in 2006 by two former journalists, David Pitchford and Peter Heywood. Its website features more than 500 UK charities, assigning them scores for the quality of reporting and transparency of their annual report and accounts.