Beatrice Weder di Mauro

Bloomberg has an editorial today about how the government is subsidizing the top ten U.S. banks by $83 billion a year and maybe it should stop doing that. Because the editorial is getting a lot of attention, and because it is wrong, let’s discuss it.

Here is Bloomberg:

Lately, economists have tried to pin down exactly how much the subsidy lowers big banks’ borrowing costs. In one relatively thorough effort, two researchers — Kenichi Ueda of the International Monetary Fund and Beatrice Weder di Mauro of the University of Mainz — put the number at about 0.8 percentage point. The discount applies to all their liabilities, including bonds and customer deposits.

Here are Ueda and di Mauro:

[W]hen issuing a five-year bond, a three-notch rating increase translates into a funding advantage of 5 bp to 128 bp, depending on the riskiness of the institution. At the mid-point, it is 66.5 bp for a three-notch improvement, or 22bp for one-notch improvement. Using this and the overall rating bonuses described in the previous paragraph, we can evaluate the overall funding cost advantage of SIFIs as around 60bp in 2007 and 80bp in 2009.

Let’s break that down. Their paper: Read more »