The government has awarded £55m from dormant assets to a new private sector organisation called Fair4All Finance to tackle financial exclusion.
Fair4All Finance was registered at Companies House last month.
Richard Collier-Keywood, a former global vice chairman of PwC who was appointed a commissioner of the Dormant Assets Commission in 2016, has been named founding chair.
A statement on Fair4All Finance's website said: "Richard has been appointed by an independent panel, chaired by Sir Leigh Lewis, for an initial four-year term.
"Our challenge and the opportunity is to deploy the dormant assets money to ensure that affordable credit, and other financial products and services, serve the needs of vulnerable people at scale."
The Department for Digital, Culture, Media & Sport announced in last year's Civil Society Strategy that it would "direct funds for the establishment of a new financial inclusion organisation responsible for deploying £55m of funding from dormant accounts".
The strategy added the new organisation would seek co-funding from a range of investors, including the private sector, and build partnerships with other organisations, including the Financial Conduct Authority.
The government estimates that more than three million people use high-cost credit even though more affordable options are available.
Collier-Keywood said in a statement: "We are currently a start-up and we have a lot of work to do, not least to appoint a board and leadership team and put together a plan designed to have the greatest possible impact on financial exclusion."
Mims Davies, the Minister for Sport and Civil Society, said in a statement: "The launch of Fair4All Finance is a key milestone in tackling financial exclusion and distributing funds to help those that need it the most."