Nations Trust Bank, regulated by the Central Bank of Sri Lanka and governed by the Banking Act, commenced operations in July 1999 following the acquisition of the Colombo branch of the Overseas Trust Bank. Historically, the Bank’s profitability has been primarily driven by its Corporate Banking segment. However, the Bank now aims to position itself as a retail-focused commercial institution.

Nations Trust Bank PLC (abbreviated as NTB) is one of the listed banks in Sri Lanka with 96 branches, 99 ATMs and 64 cash deposit & withdrawal machines as well as an automated channels and is the issuer and sole acquirer for American Express Credit Cards in Sri Lanka. Nation Trust Bank's major shareholders are John Keells Holdings and Central Finance Company PLC which are leading companies in their respective operating sectors in Sri Lanka.

Nations Trust Bank was established in July 1999 when it acquired the Colombo Branch of Overseas Trust Bank Ltd.

The bank has 96 branches and 99 ATM machines.