Deutsche Bank has launched a £10m fund that will put money into social investment intermediaries.
The money will be invested in a similar way to cash from Big Society Capital, in that it will not go directly to charities and social enterprises but to those who lend to them.
Money will be invested over the next three years and repaid over 10 years.
The company said it was the first investment bank to create a "discrete, ring-fenced fund to invest in this nascent asset class".
Kate Cavelle, head of UK corporate social responsibility at Deutsche Bank, said that the fund would attempt to break even, but was not intended to make a profit.
She said the money would not come out of the bank’s CSR budget. "Our activities are driven by the idea of finding sustainable ways to tackle social issues," she said. "This offers both a social and financial return. We will see how this develops. If it’s successful, we would like to do more."
Bank staff will also volunteer in the social investment industry, she said.