The main functions discharged by the Wing are:
1.Participating in the meetings of various Working Parties and subsidiary focus groups of the Centre for Tax Policy and Administration, OECD,
2. Monitoring Double Taxation Avoidance Agreement (DTAA) related issues including revision of existing DTAAs,
3. Maintaining liaison with various departments such as the tax administration, department of banking services , administrators of financial services,
4. Imparting of information on domestic laws of India to foreign investors.