BSB Bancorp, Inc. (BSB Bancorp) is a bank holding company. The Company owns 100% of Belmont Savings Bank (Belmont Savings or the Bank). Belmont Savings through six full service branch offices accepts deposits from the general public and invests those deposits, together with funds generated from operations and borrowings, in one to four family residential mortgage loans, commercial real estate loans, multi-family real estate loans, home equity lines of credit, indirect automobile loans, commercial business loans, construction loans and investment securities. The Bank offers deposit accounts, such as relationship checking accounts, passbook and statement savings accounts, certificates of deposit, money market accounts, Interest on Lawyer Trust Accounts, commercial, municipal and regular checking accounts and Individual Retirement Accounts. The Bank offers commercial and retail banking services, such as cash management, online and mobile banking, and global payments and foreign exchange.