NIRSAL Microfinance Bank (NMFB) is a Nigerian Financial Institution licensed by the Central Bank of Nigeria (CBN) to carry out specialized banking services. NMFB was incorporated as a Private Limited Company in 2019 and commenced operations, following the grant of a National Microfinance Bank license by the Central Bank of Nigeria, in the same year.

In addition to the inherent responsibilities of the national license, NIRSAL Microfinance Bank is primarily an Intervention Bank; a viable channel for the on-lending of special funds from the Central Bank of Nigeria to qualified citizens of Nigeria. The Bank is Owned 75% by the Bankers Committee, 15% by NIRSAL and 10% NIPOST.

Currently, NIRSAL Microfinance Bank has its headquarters in Abuja, with a network of 115 branches in all the states of the Federation.