An Offshore Banking Unit (OBU) of a bank is a deemed foreign branch of the parent bank situated within India, and shall undertake International Banking business involving foreign currency denominated assets and liabilities.

PNB is one of the premier banking institutions of India with a glorious history of 115 years (estd. in 1895), and is one of the top Public Sector Banks in India, owned predominantly by the Govt. Of India. PNB is listed on the Bombay Stock Exchange and other major Stock Exchanges of the country.

Since its humble beginning in 1895 with the distinction of being the first Indian bank to have been started with Indian capital, PNB has achieved significant growth in business which at the end of March 2010 amounted to $ 94 Billion (Rs. 435931 crore). Today, with assets of more than $ 64 Billion (Rs. 2,96,633 crore), PNB is ranked at 368^th amongst Top 1000 Global Banks,  the 3rd largest bank in the country and has the 2nd largest network of branches 5002 offices  (4997 in India  and 5 overseas branches).

The OBU of PNB is situated at Santacruz Electronics Export Promotion Zone (SEEPZ), Andheri East in Mumbai (Bombay), the financial capital of India, and is a Deemed Foreign Branch of PNB, although located within the country.