New Delhi, Oct. 15 -- India should maintain a minimum import duty difference of 7.5-10 per cent between crude and refined edible oils to safeguard the domestic processing industry and ensure market stability, according to a new research paper titled Tariff Volatility and Stakeholder Dynamics in India's Edible Oil Sector.

The study also recommended a consistent three-to-five-year policy framework on import tariffs to reduce market uncertainty.

The paper, jointly published by the Centre for Economic Studies and Planning (CESP) at Jawaharlal Nehru University (JNU), VeK Policy Advisory and Research, and the Associated Chambers of Commerce and Industry of India (Assocham), highlighted that frequent changes in import duties have created insta...