DRI, which acts as lead agency to check smuggling and cases of commercial frauds, and Central Economic Intelligence Bureau (CEIB) have found about 200 such cases involving illegal movement of over Rs 900 crore during 2013-14 (till December), official sources said.
TBML is process of transferring or moving money through trade transactions. In practice, this can be achieved through misrepresentation of price, quantity or quality of imports or exports.
The basic techniques of TBML include over and under- invoicing of goods and services, multiple invoicing of goods and services and over or under-shipments of goods and services among others, they said.
DRI officials said they in coordination with other intelligence agencies are keeping a vigil on dubious consignments going out and coming into India.
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According to a Finance Ministry report on black money, international trade system is subject to a wide range of risks and vulnerabilities, which provide unscrupulous entities the opportunity to launder money.
"Companies and individuals also shift money from one country to another to diversify risk and protect their wealth against the impact of financial or political crises.
Misuse of export promotion schemes such as drawback, Duty Entitlement Pass Book, Duty Free Import Authorisation, Vishesh Krishi Gram Upaj Yojana, also lead to generation and flow of black money, it said.
"Several cases of forgery of export promotion scheme scrips or licences, meant to claim duty exemption in imports have been detected, which highlight another aspect of black money generation and movement," the report added.