Insurer of last resort
The “bad bank” idea is gone. And in it’s place the government will provide default insurance to the banking industry. So what will this change?
First, we need to define well two different sources of risk, which are often confused for each other, Credit Risk and Counterparty Risk:
Credit Risk is the risk that someone who owes you money in the form of a debt, loan or bond will fail to pay you (defaults on their debt). When a bank gives a loan, provides a mortgage or buys a bond from any entity (a person or company), they gain Credit Risk to that entity.
Counterparty Risk is the risk that the Counterparty in a transaction will fail to honour their side of the deal. This risk can occur at the point the transaction is done, or at any point while the transaction is “live”. This risk can relate to a simple asset purchase, where the risk would be that you pay your money, but never receive the asset. It can also relate to a complicated derivative transaction, such as an option purchase, where you pay for something upfront, but expect to receive money back conditional upon a certain event happening (stock prices going up, fx rates going down, a company defaulting). Here the risk is that when the event happens, the counterparty does not pay you.
Banks are able to hedge their Credit risk to large corporate exposures through the Credit Default Swap market. However this then gives them a new Counterparty risk around the hedging transaction. This Counterparty risk is very difficult to get rid of. If you hedge the Counterparty risk with another market player, you then have a new Counterparty risk exposure which you need to hedge. This is a viscous circle which is impossible to completely solve, and very expensive to minimize.
Counterparty risk was mostly overlooked for many years, with the classic derivative pricing models having as a base criterion “assume no counterparty risk exists”. The collapse of Bear Stearns, Lehman Brothers, et alia, exposed this to be false in a way that shocked the markets to their core.
Banks are NOT able to hedge either their Credit or Counterparty exposure to small corporations, nor to individuals. The Credit Default Swap market for such small entities simply does not exist. These exposures tend to be small individually, but on aggregate can make up a large percentage of the banks overall exposure and revenue.
This brings us to the government’s plan of providing loan insurance to banks. The intention is that banks will quantify their exposure to individual people, as well as small and medium size businesses. They will then estimate default probabilities for each of these, and purchase insurance from the government to get rid of the Credit Risk.
The Government will then become the new counterparty. Theoretically, the Government is always risk-free, and therefore Counterparty risk does not exist. This is open to dispute, however we will leave this can of worms alone for now.
So this plan, in essence, will remove both Credit Risk and Counterparty Risk from the banks, for a price. The big question mark is the calculation of this price.
All the information about the credit quality for small businesses and individuals lies with the lenders (banks). The Government does not have this information, nor the knowledge and expertise to price this debt well. They will have to rely on the banks “honesty” to ensure that the deal is done at a fair price.
If the premium is priced correctly, then the overall fees received by the Government should be completely cover any potential future losses. In fact, due to gains made from aggregation of risk (the fundamental principal of insurance) they should make a small profit.
On the other hand, if the premium is priced too low, then the taxpayer will again end up out of pocket for billions.
In conclusion, the idea is fundamentally sound. However, all eyes will be on how the scheme is priced, as this will be the key for success.
by Andrea Graves and William Durham
18.01.2009
You may also want to read:
Robert Preston’s Blog: A bank insurer, not a toxic bank
BBC News: Brown urges banks to ‘come clean’