The report compiled by Assocham observed that for the period between 2010-11 and 2015-16, the share of India's total exports to the South East Asian region also dropped to 9.6 per cent from 10.3 per cent when the FTA came into force.
The industry body said the study's findings raise "a big question mark" over the utility of the trade-opening pact with the common market of South East Asia.
Tariff would have already been eliminated on 3,200 products under the Normal Track 1, the paper highlighted.
The India-Asean overall FTA comprises two parts - goods and services. The agreement on goods was front-loaded, while services pact was back-loaded.
Given that Indian tariff levels are generally higher than tariffs of Asean , India has relatively less to gain from this trade in goods agreement, Assocham President Sunil Kanoria said, pressing for effective access to market of services in Asean for India, an area of advantage to the country.
The Asean-India Investment and Services Agreement came into force on July 1, 2015. Though a preferential deal on services trade with the region should bring significant gains to India, the services sector is protected through strict domestic regulations and various restrictive requirements.