Subprime Lending - Subprime Crisis

Subprime Crisis

The subprime mortgage crisis arose from 'bundling' American subprime and American regular mortgages which were traditionally isolated from, and sold in a separate market from prime loans. These 'bundles' of mixed (prime and subprime) mortgages were the basis asset-backed securities so the 'probable' rate of return looked superb (since subprime lenders pay higher premiums, and the loans were anyway secured against saleable real-estate, and so, theoretically 'could not fail'). Many mortgages had a low interest for the first year, and poorer buyers 'swapped' regularly at first, but finally such borrowers began to default in large numbers. The inflated house-price bubble burst, property valuations plummeted and the real rate of return on investment could not be estimated, and so confidence in these instruments collapsed, and all were considered to be almost worthless toxic assets, regardless of their actual composition or performance.

To avoid high initial mortgage payments, many subprime borrowers took out adjustable-rate mortgages (or ARMs) that give them a lower initial interest rate. But with potential annual adjustments of 2% or more per year, these loans can end up costing much more. So a $500,000 loan at a 4% interest rate for 30 years equates to a payment of about $2,400 a month. But the same loan at 10% for 27 years (after the adjustable period ends) equates to a payment of $4,220. A 6-percentage-point increase (from 4% to 10%) in the rate caused slightly more than a 75% increase in the payment. This is even more apparent when the lifetime cost of the loan is considered (though most people will want to refinance their loans periodically). The total cost of the above loan at 4% is $864,000, while the higher rate of 10% would incur a lifetime cost of $1,367,280.