Fisher grew up immersed in his father's mercantile business, "Joshua Fisher & Sons" (1762–1783). He learned about all aspects of the family business. The firm imported an extensive variety of goods from Europe including
porcelain,
silverware, and high quality craftsman tools like chisels and saws. In 1787, Fisher advised and financed the establishment of the Gilpin family paper mill on the Brandywine River in Delaware. It was run by
Joshua Gilpin and his brother Thomas Gilpin Jr., the sons of Fisher's late friend, Thomas Gilpin Sr., who died in exile during the Revolutionary War. The Gilpins became renowned for their fine paper, and the invention of the "endless paper making machine" in 1817 revolutionized the paper making industry. Fisher was a director of the
Bank of North America from 1792 to 1800, and an advocate of establishing lines of credit ("loan funds") for tradesmen, to spur economic growth. == Political career ==