Overseas Depository Bank definition clarifies institution authorised to issue GDRs against FCCBs or shares under tax law. The term Overseas Depository Bank is defined for income tax purposes as a bank authorised by the issuing company to issue Global Depository Receipts against issuance of Foreign Currency Convertible Bonds or against the company's ordinary shares, thus identifying the authorised institution and the issuance linkage relevant to tax treatment.