Jeff Bank, National Association operates as the bank holding company for Jeff Bank that provides community banking products and services to individuals, small businesses, and local municipal governments primarily in Sullivan County, New York. The company offers various deposit products, such as checking, money market, savings, individual retirement arrangement, and NOW, as well as demand and time deposits. It also provides commercial mortgage, farmland, construction, agricultural, commercial, residential mortgage, home equity, construction, home improvement, debt consolidation, check, installment, and commercial vehicle/equipment and real estate, as well as auto, RV, motorcycle, and boat loans; commercial lines of credit; short term notes; and other financing services. In addition, the company provides credit cards; e-statements; bill pay services; safe deposit box rentals, teller checks, and wire transfers; and online and mobile banking services. The company was formerly known as Jeffersonville Bancorp and changed its name to Jeff Bank, National Association in September 2026. The company was founded in 1913 and is based in Jeffersonville, New York.