The organisation was set up to manage £70m from government with the aim of improving voluntary sector infrastructure. Trustees will vote next week on whether to allow it to issue grants to private companies, which could then add donations and provide services for charities.
Simon Hebditch, chief executive of Capacitybuilders, said the organisation wanted to identify new funding streams.
"The change will enable us to approach private sector companies to discuss the possibility of investment in infrastructure," he said.
Ben Wittenberg, director of policy and research at the Directory for Social Change, warned that the move should not make accessing support more bureaucratic.