Baker on DeLong

Question for Brad DeLong and the Debt School of the Downturn: What Would Our Saving Rate Be If We Didn't Have Debt? by Dean Baker

Brad DeLong tells us that he is moving away from the cult of the financial crisis (the weakness of the economy in 2014 is somehow due to Lehman having collapsed in 2008 -- economists can believe lots of mystical claims about the world) and to the debt theory of the downturn. Being a big fan of simplicity and a foe of unnecessary complexity in economics, I have always thought that the story was the lost of housing wealth pure and simple. (And yes folks, this was foreseeable before the collapse. Your favorite economists just didn't want to look.)

Just to be clear on the distinction, the loss of wealth story says it really would not have mattered much if everyone's housing wealth went from $100k to zero, as opposed to going from plus $50k to minus $50k. The really story was that people lost $100k in housing wealth (roughly the average loss per house), not that they ended up in debt. Just to be clear, the wealth effect almost certainly differs across individuals. Bill Gates would never even know if his house rises or falls in value by $100k. On the other hand, for folks whose only asset is their home, a $100k loss of wealth is a really big deal.

The debt story never made much sense to me for two reasons. First, the housing wealth effect story fit the basic picture very well. Are we supposed to believe that the housing wealth effect that we all grew up to love stopped working in the bubble years? The data showed the predicted consumption boom during the bubble years, followed by a fallback to more normal levels when the bubble burst. 

The other reason is that the debt story would imply truly heroic levels of consumption by the indebted homeowners in the counter-factual. Currently just over 9 million families are seriously underwater (more than 25 percent negative equity), down from a peak of just under 13 million in 2012. Let's assume that if we include the marginally underwater homeowners we double these numbers to 18 million and 26 million.

How much more money do we think these people would be spending each year, if we just snapped our fingers and made their debt zero? (Each is emphasized, because the issue is not if some people buy a car in a given year, the point is they would have buy a car every year.) An increase of $5,000 a year would be quite large, given that the median income of homeowners is around $70,000. In this case, we would see an additional $90 billion in consumption this year and would have seen an additional $130 billion in consumption in 2012.

Would this have gotten us out of the downturn? It wouldn't where I do my arithmetic. For example, compare it to a $500 billion trade deficit than no one talks about. Furthermore, the finger snapping also would have a wealth effect. In 2012 we would have added roughly $1 trillion in wealth to these homeowners by eliminating their negative equity. Assuming a housing wealth effect of 5 to 7 cents on the dollar, that would imply additional consumption of between $50 billion to $70 billion a year, eliminating close to half of the debt story. So how is the downturn a debt story? (You're welcome to put in a higher average boost to consumption for formerly negative equity households, but you have to do it with a straight face.)

Finally, getting to the question in my headline, the current saving rate out of disposable income is 5 percent. This is lower than we ever saw until the stock wealth effect in the late 1990s pushed it down to 4.4 percent in 1999, it hit 4.2 percent in 2000. The saving rate rose again following the collapse of the stock bubble, but then fell to 3.0 percent in 2007. The question then for our debt fans is what they think the saving rate would be absent another bubble, if we eliminated all the negative equity.