An important criterion for judging the soundness of a banking institution is the size and character, not only of its assets portfolio but also, of its contingent liability commitments such as guarantees, letters of credit, etc. As a part of business, banks issue guarantees on behalf of their customers for various purposes. The guarantees executed by banks comprise both performance guarantees and financial guarantees. The guarantees are structured according to the terms of agreement, viz., security, maturity and purpose. With the introduction of risk weights for both on-Balance Sheet and off-Balance Sheet exposures, banks have become more risk sensitive, resulting in structuring of their business exposures in a more prudent manner.