The White House has planned an event for Thursday to announce “philanthropic commitments” that have been made to support the Social Innovation Fund, the new federal grants program to help nonprofit groups expand effective social efforts.

First Lady Michelle Obama and Patrick Corvington, chief executive of the Corporation for National and Community Service, will make the announcement at the First Lady’s Garden.

The national-service agency is in the process of selecting 7 to 10 recipients of this year’s $50-million in grants that will go to “intermediary” grant makers, which will in turn provide money to innovative nonprofit groups. Both the grant makers and the nonprofit groups must provide equal matching funds.

Thursday’s announcement will reveal which grant makers have stepped forward to offer an “initial phase” of matching funds, as well as other “investments in innovative community solutions,” the White House said.

The national-service agency received 69 applications for social-innovation money, with proposals coming from collaborations among more than 260 foundations, charities, universities, local governments, businesses, and private donors.