"Re-export of food, medicine and medical equipment to Iran will not be subject to any value addition requirement," Directorate General of Foreign Trade (DGFT) said in a notification.
Earlier, 15 per cent value addition was mandatory for re-export to Iran.
According to apex exporters body Federation of Indian Export Organisations (FIEO), the move will help in increasing exports to Iran "in a big way" in 2014-15.
However, the DGFT said that goods imported for such re-export to Iran against rupee payment shall not be eligible for any export incentive.
"India has more than doubled its exports to Iran in last two years benefiting from the rupee payment mechanism," FIEO said in a statement.
Besides food products, India mainly export to Iran includes pharmaceuticals, machinery, transport equipment, chemicals, man-made yarns and fabrics, steel.