The assurance was given to Prime Minister Narendra Modi by Philippines President Benigno Aquino during their bilateral meeting on the sidelines of the India-ASEAN and East Asia summits here.
India has formally signed the long-pending pact with the other nine southeast Asian nations -- Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, Singapore, Thailand and Vietnam.
Modi in his address to the 12th India-ASEAN summit yesterday had urged that the FTA on Service and Investment be brought into force "at the earliest".
This will be especially helpful for balancing India's deficit with ASEAN countries in trade of goods. The India- ASEAN agreement on trade in goods was operationalised in 2010.
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It seeks to liberalise trade in services and bilateral investment, building on their existing free trade agreement (FTA) for goods and covering a combined population of 1.8 billion.
The current India-ASEAN trade is around USD 81 billion and a target of USD 100 billion has been set for 2015.
The deal was signed by India in New Delhi after Commerce Minister Nirmala Sitharaman cancelled her visit here on August 26 to initial the pact as she was preoccupied with the launch of the inclusive banking scheme, Jan Dhan Yojana.
The deal has instead been signed by circulating the text around the countries involved.
Once implemented, the new deal will help reinforce ASEAN's centrality in the regional trade architecture. The regional bloc also recently agreed to enhance its existing FTAs with China, a much larger trading partner than India, Australia and New Zealand.