The RBI has specifically advised the banks to issue LoUs to only those who have existing credit relationships with a bank. In the master circular on guarantees and co-acceptances, from July 2014, under the precautions for averting frauds head, the RBI said, “Banks should refrain from issuing guarantees on behalf of customers who do not enjoy credit facilities with them. As non-compliance of RBI regulations in this regard is likely to vitiate credit discipline, RBI will consider penalising non-compliant banks.” Validity of an LoU depends on the category of goods that are imported.
The overseas bank lending to the borrower based on the LoU earns interest on the amount, the bank issuing the LoU gets a fee and the borrower gets a credit facility at a place where she may not have banking relationships. Moreover, interest rates in India are higher compared to international benchmark rates. So the effective outgo on interest for the borrower is also beneficial. If the collateral is in the form of a fixed deposit, there is further gain on the interest earned, while the bank also gets some funds to use.