Technical Note

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                                            Technical Note
                                       Gross Domestic Product
                                  Fourth Quarter of 2009 (Advance)
                                           January 29, 2010


This technical note provides background information about the source data and estimating methods used
to produce the estimates presented in the GDP news release.  The complete set of estimates for the fourth
quarter is available on BEA's Web site at www.bea.gov; a brief summary of "highlights" is also posted
on the Web site.  In a few weeks, the estimates will be published in BEA's monthly journal, the Survey
of Current Business, along with a more detailed analysis of the estimates ("GDP and the Economy").

Real GDP

Real GDP increased 5.7 percent (annual rate) in the fourth quarter, following an increase of 2.2 percent
in the third quarter.  The acceleration in real GDP in the fourth quarter reflected an acceleration in
inventory investment, a deceleration in imports, and an upturn in business fixed investment that were
partly offset by decelerations in federal government and consumer spending.

Source Data for the Advance Estimate

The advance GDP estimate for the fourth quarter of 2009 is based on source data that are incomplete
and subject to revision.  Three months of source data were available for consumer spending on goods;
shipments of capital equipment other than aircraft; motor vehicle sales and inventories; manufacturing
durables inventories; federal government outlays; and consumer, producer, and international prices.
Only two months of data were available for most other key data sources; BEA’s assumptions for the
third month are shown in table A.  Among those assumptions are the following:

     *   a decrease in nondurable manufacturing inventories,
     *   a decrease in non-motor-vehicle merchant wholesale and retail
         inventories,
     *   an increase in exports of goods, excluding gold, and
     *   an increase in imports of goods, excluding gold.

Prices

The price index for gross domestic purchases increased 2.1 percent in the fourth quarter after
increasing 1.3 percent in the third quarter.  Excluding food and energy prices, the price index
for gross domestic purchases increased 1.2 percent in the fourth quarter, after increasing 0.3
percent in the third.

American Recovery and Reinvestment Act of 2009

BEA's national accounts include the effects of the federal outlays and tax cuts included in the
American Recovery and Reinvestment Act of 2009.  Because most of the outlays and tax reductions
from ARRA during the last four quarters were in the form of grants to state and local governments,
tax reductions for individual and business taxpayers, and social benefits to households, their
effects on GDP show up indirectly through the effects on GDP components such as consumer spending,
residential investment, and state and local government spending.  Thus, BEA’s accounts do not
directly identify the portion of GDP expenditures that is funded by ARRA.  It is possible, however,
to identify the effects of ARRA on components of income.

During the fourth quarter, ARRA provisions lowered personal taxes about $85 billion (annual rate)
and raised government social benefits to persons about $69 billion, thus raising disposable personal
income about $154 billion.  Corporate taxes were also lowered about $20 billion.  ARRA funded about
$80 billion in current grants to state and local governments (such as Medicaid and education grants),
about $25 billion in capital transfers to state and local governments and home buyers, and about $3
billion in subsidies for housing and energy.  Further information, including estimates of the effects
of ARRA for the first three quarters of 2009, is available at http://www.bea.gov/recovery/index.htm.


Brent R. Moulton
Associate Director for National Economic Accounts
Bureau of Economic Analysis
(202) 606-9606