India relies on imports for 70 per cent of its edible oil consumption, up from 44 per cent in 2001/02.
India raised import tax on crude soyoil to 35 per cent from 30 per cent, and on crude canola oil and sunflower oil to 35 per cent from 25 per cent.
Import duty on refined soyoil, canola oil and sunflower oil was raised to 45 per cent from 35 per cent.
"Imports of palm oil will rise in coming months. Palm was losing market share due to higher duty. Now there is a level playing field," said Sandeep Bajoria, chief executive of the Sunvin Group, a Mumbai-based vegetable oil importer.
In March, India raised its import tax on crude palm oil to 44 per cent from 30 per cent and lifted the tax on refined palm oil to 54 per cent from 40 per cent.
It kept the duty on soft oils unchanged, however, making them more competitive in the local market.
The country's palm oil imports in May plunged 38 per cent from a year earlier to their lowest in nearly 4-1/2 years as imports of soyoil and sunflower oil jumped, a trade body said on Thursday.
The country buys palm oil from Indonesia and Malaysia; and soyoil mainly from Argentina and Brazil, while it purchases sunflower oil from Ukraine.
"This was badly needed for palm oil. Export of both Malaysia and Indonesia fell in last two months," a Kuala Lumpur-based palm trader said.
Malaysia's palm oil exports in May dropped 8.8 per cent from April to around 1.2 million tonnes, independent inspection company AmSpec Agri Malaysia said.
Weak exports pulled Malaysian palm oil futures to the lowest level in more than 22-months on Wednesday.
Palm oil prices are likely to rebound in coming days as exports would start picking up from July onwards, the Kuala Lumpur-based trader said.