Sunday, December 15, 2019
Let us suppose that in a world without risk weighted capital requirements, like the world of banking was for around 600 years before 1988’s Basel Accord, a world with one single capital requirement against all bank assets, for instance 8%.
Let us also suppose that in that world banks would view residential mortgages at 5% interest rate to be, when adjusted to perceived credit risks, equivalent to 9% interest rate on loans to entrepreneurs, and that, for both these assets, their expected risk adjusted net margin was 1%.
In that case, since banks could leverage 12.5 times their equity (100/8) the expected risk adjusted return on equity, on both these assets, would be 12.5%
How many residential mortgages and how many loans to entrepreneurs were given in such a world? I have no idea but adjusted for their perceived credit risk, it was clear both house buyers and entrepreneurs competed equally for credit.
But then came the Basel Committee with its risk weighted bank capital requirements, and for instance in its 2004 Basel II, assigned a risk weight of 35% to residential mortgages and 100% for loans to unrated entrepreneurs.
That, for Basel’s basic capital requirement of 8%, meant banks needed to hold 2.8% in capital against residential mortgages and 8% against loans to entrepreneurs.
This in turn meant banks could in the case of loans to entrepreneurs still leverage 12.5 times but now, with residential mortgages, they could leverage almost 36 times (100/2.8).
And in this case, with the same as expected risk adjusted margin of 1%, banks could still earn12.5% in expected risk adjusted return on equity, but residential mortgages now offered them the possibility of earning a whooping 36% in expected risk adjusted return on equity.
Clearly house buyers were much favored since banker would offer residential mortgages much more and even contemplate some interest rate reductions, while the entrepreneurs had their access to credit much curtailed that is unless they offered to pay higher interest rates.
So what does all this result in? Houses morphing from affordable home into being risky investment assets, while at the same time much less of those job opportunities that entrepreneurs might have helped to create for us and our descendants.
Thinking of our grandchildren’s future is this kind of bank regulations acceptable? Absolutely not! “A ship in harbor is safe, but that is not what ships are for.” John A. Shedd.
PS. Much worse statist regulators assigned 0% risk weights on loans to the sovereign, which de facto implied government bureaucrats to use credit for which they are not personally responsible for much better, than for instance entrepreneurs.