Mon, Jun 29, 2009 - Page 9 News List

Stress tests don’t reveal the true economic value of toxic assets

By Lucian Bebchuk

The US government is now permitting 10 of the US’ biggest banks to repay about US$70 billion of the capital injected into them last fall.

This decision followed the banks having passed the so-called “stress tests” of their financial viability, which the US Treasury demanded, and the success of some of them in raising the additional capital that the tests suggested they needed.

Many people have inferred from this sequence of events that US banks — which are critical to both the US and world economies — are now out of trouble.

But that inference is seriously mistaken.

In fact, the US stress tests didn’t attempt to estimate the losses that banks have suffered on many of the “toxic assets” that have been at the heart of the financial crisis.

Nevertheless, the US model is catching on.

In a meeting this month, finance ministers of G8 countries agreed to follow the US and perform stress tests on their banks.

But, if the results of such tests are to be reliable, they should avoid the US tests’ fundamental flaw.


Until recently, much of the US government’s focus has been on the toxic assets clogging banks’ balance sheets.

Although accounting rules often permit banks to price these assets at face value, it is generally believed that the fundamental value of many toxic assets has fallen significantly below face value.

The administration of US President Barack Obama came out with a plan to spend up to US$1 trillion to buy banks’ toxic assets, but the plan has been put on hold.


It might have been hoped that the bank supervisors who stress-tested the banks would try to estimate the size of the banks’ losses on toxic assets.

Instead, supervisors estimated only losses that banks can be expected to incur on loans (and other assets) that will come to maturity by the end of next year.

They chose to ignore any losses that banks will suffer on loans that will mature after next year.

Thus, the tests did not take into account a big part of the economic damage that the crisis imposed on banks.

Although we don’t yet have an estimate of the economic losses the stress tests have chosen to ignore, they may be substantial.

A recent report by Deutsche Bank, for example, shows that borrowers will have difficulty refinancing hundreds of billions of dollars of commercial real estate loans that will mature after next year.

Rather than estimate the economic value of banks’ assets — what the assets would fetch in a well-functioning market — and the extent to which they exceed liabilities, the stress tests merely sought to verify that the banks’ accounting losses over the next two years will not exhaust their capital as recorded in their books.

As long as banks are permitted to operate this way, the banks’ supervisors are betting on the banks’ ability to earn their way out of their current problems — even if the value of their assets doesn’t now significantly exceed their liabilities.

But doesn’t the banks’ ability to raise new equity capital indicate that, regardless of whether the stress tests are reliable, investors believe that their assets’ value does significantly exceed their liabilities?


Not at all. Consider a bank with liabilities of US$1 billion.

Suppose that the bank has assets with long maturity and a face value of US$1.2 billion, but whose current economic value is only US$1 billion.

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