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Technical Note
Gross Domestic Product
First Quarter of 2010 (Second Estimate)
May 27, 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 first
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").

Sources of Revision to Real GDP

The real GDP growth rate in the first quarter was revised from 3.2 percent to 3.0 percent (annual rate).
Downward revisions to consumer spending, business fixed investment, and net exports were partly offset
by an upward revision to inventory investment.

*       Consumer spending was revised down.  The largest contributor to the revision was electricity and
        gas, based on newly available usage and unit value data for February and March from the Energy
        Information Administration.  Benchmarked Census retail trade source data were also incorporated
        on a best-change basis.
*       Business fixed investment was revised down.  The largest contributor to the revision was software,
        based on newly available revenue data from first-quarter financial statements of software companies.
*       Net exports were revised down, reflecting a larger upward revision to imports than to exports.
        These revisions were based on newly available Census Bureau goods data for March.
*       Inventory investment was revised up.  The largest contributors were durable goods manufacturing and
        wholesale trade industries.  The revisions reflected newly available Census nondurable manufacturing
        and trade inventories for March and benchmarked manufacturing and trade inventories, which were
        incorporated on a best-change basis.  (BEA applies the “best change” to the level of inventories.)

The price index for gross domestic purchases increased 1.7 percent in the first quarter, the same as in
the advance estimate.

Corporate Profits

Profits from current production increased $81.4 billion, or 5.5 percent (quarterly rate), in the first
quarter, after increasing $108.7 billion, or 8.0 percent, in the fourth.

The profits estimates also show a large change in the capital consumption adjustment, which is the difference
between the depreciation specified in the tax code and BEA’s measure of economic depreciation (“consumption
of fixed capital”).  The capital consumption adjustment decreased $107.2 billion in the first quarter, with
revised estimates of “bonus depreciation” from the Office of Tax Analysis more than accounting for the decrease.
Profits from current production are not affected by the revised estimates of bonus depreciation because they do
not depend on the depreciation-accounting practices used for federal income tax returns; rather, they are
based on depreciation of fixed assets valued at current cost and using consistent depreciation profiles based
on used-asset prices.

Revisions to Wages and Salaries and Disposable Personal Income

In addition to presenting revised estimates for the first quarter, today's release also presents revised
estimates of fourth-quarter wages and salaries, personal taxes, and contributions for government social
insurance.  Wage and salary disbursements are now estimated to have decreased $13.2 billion in the fourth
quarter, a downward revision of $30.3 billion.  These estimates reflect newly available wage and salary
tabulations for the fourth quarter from the BLS quarterly census of employment and wages.  These data are
more comprehensive than the monthly employment and earnings data that were used for the earlier
estimates—the QCEW data include irregular pay, such as bonuses and gains from the exercise of stock options.

First-quarter disposable personal income was boosted by a downward revision to personal current taxes,
which was based on federal tax collections data through April.

Real disposable personal income is now estimated to have been essentially unchanged (0.0 percent) in the
fourth quarter and to have increased 1.9 percent in the first.  (By comparison, the estimates that were
available last month showed an increase of 1.0 percent in the fourth quarter and essentially no change
in the first.)

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