He said the Government-backed investment fund would give financial support such as loans to organisations that had long-term potential but faced short-term difficulties.
Futurebuilders would also provide practical advice and guidance on business opportunities and planning for leaner economic times, he told Third Sector.
It would also boost its support for organisations experiencing greater demand for their services, such as those working in the fields of education, training and job placement.
"We're committed to leading the third sector through this period of economic uncertainty," said Lewis. "As part of the new policy, we will be offering a combination of financial support, practical advice and guidance - not only to our investee organisations, but to the entire third sector."