Credit Crisis

Credit Crisis
In the case of a credit crisis, banks either do not charge enough interest on loans or pay too much for the securitized loan, or the rating system does not rate the risk of the loans correctly. A crisis occurs when several factors combine in the marketplace, affecting a large number of investors.

For example, banks will charge teaser rates on loans, but when the initial low payments change, they become too high for borrowers to pay. The borrowers default on the loans, and the loan's collateral value simultaneously drops. If enough lending institutions reduce the number of new loans issued, the economy will slow down, making it even harder for other borrowers to pay their loans.