Monday, November 3, 2014

How The BEA Goosed 3rd Quarter GDP——With A Phony 74% Leap In Defense Spending

The White House

And from this a thousand conspiracy-themed blog posts will be born. Here is Capital Economics on the surprisingly strong (3.5% vs. 3.0% forecast) third-quarter US GDP report:

– The reported leap in third-quarter defence spending, which added 0.7 percentage points to annualised  GDP growth was, as far as we can tell, largely due to a failure of the BEA’s seasonal adjustment  process. As a result, we expect defence spending to plunge this quarter, subtracting a similar amount  from fourth-quarter GDP growth.
– All of the upside surprise in third-quarter GDP growth (the 3.5% outturn was well above the consensus  forecast of 3.0%) can be explained by the 4.6% increase in government spending, which added 0.8  percentage points (ppts) to overall growth. Moreover, nearly all of that boost was due to a 21% leap in Federal defence consumption. That’s the largest increase since the second Iraq war in  early 2003. Drilling down further, more than two-thirds of the rise was due to a 74% annualised leap in  defence spending on support services for installation, weapons and personnel. This is unusual given that  spending on such services typically makes up just 25% of total defence spending.
– Some of the rise in the third quarter could be due to the escalation in military action in the Middle  East, but most of it appears to be due to a failure of the seasonal adjustment process. Looking at the  averages over the past five years, defence support services spending has increased by 38% annualised in  the third quarter only to fall by an average of 34% annualised in the fourth quarter. (See Chart 2.) The BEA all-but confirmed this problem when in an email it told us that it is “trying to determine if any  methodology changes are necessary”.

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