Banking Dictionary:
Credit Enhancement
Techniques used to improve the credit rating of an asset-backed security or a municipal bond, generally to get an investment grade rating from a bond rating agency and to improve the marketability of the securities to investors. There are two general classifications of credit enhancements: third-party enhancement, in which a third party pledges its own creditworthiness and guarantees repayment in exchange for a fee; and self-enhancement, which is generally done by the issuer through Overcollateralization i.e., pledging loans with a book value greater than the face value of the bonds offered for sale.
Third party enhancements take the form of a Standby Letter of Credit or Commercial Letter of Credit issued by a bank, a surety bond from an insurance company, or a special reserve fund managed by a Financial Guarantee firm. The type of enhancement used and the amount of credit protection purchased varies according to the characteristics of the portfolio. Holders of the securities issued have recourse against the guarantor to the extent of the guarantee. Lines of credit are sometimes referred to as soft capital because they would not ordinarily be called upon. See also Backup Line.