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 Survey of Current Business, BEA's online monthly journal, will publish a
more detailed analysis of the estimates ("GDP and the Economy").

GDP

Real GDP increased 0.5 percent (annual rate) in the first quarter of 2016, following an
increase of 1.4 percent in the fourth quarter of 2015. The deceleration in real GDP in the
first quarter primarily reflected a larger decrease in nonresidential fixed investment, a
deceleration in consumer spending, a downturn in federal government spending, an
upturn in imports, and larger decreases in inventory investment and in exports that were
partly offset by an upturn in state and local government spending and an acceleration in
residential fixed investment.

Source Data for the Advance Estimate

The advance GDP estimate for the first quarter of 2016 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; motor vehicle sales
and inventories; durable goods manufacturing inventories; exports and imports of
goods; federal government outlays; and consumer, producer, and international prices.
BEA's key assumptions for the third month for other major series are shown in table A.
Among those assumptions are the following:

*	an increase in nonresidential construction,
*	an increase in residential construction,
*	a decrease in nondurable manufacturing inventories, and
*	an increase in non-motor-vehicle merchant wholesale and retail inventories.

Prices

The price index for personal consumption expenditures (PCE) increased 0.3 percent
in the first quarter, the same increase as in the fourth quarter. Excluding food and
energy prices, the PCE price index increased 2.1 percent after increasing 1.3 percent.

Disposable Personal Income

Real disposable personal income increased 2.9 percent in the first quarter, following
an increase of 2.3 percent in the fourth. The personal saving rate was 5.2 percent in
the first quarter, compared with 5.0 percent in the fourth.

Annual Revision Scheduled for July 29

The GDP news release on July 29, in addition to presenting the advance estimate of
GDP for the second quarter of 2016, will present the annual revision of the national
income and product accounts (NIPAs). GDP will be revised for the most recent 3 years
(2013 through 2015) and for the first quarter of 2016.

The 2016 annual revision will incorporate the usual annual source data that are more
complete and more detailed than those previously available, including:

*	Census Bureau annual surveys of manufactures, of merchant wholesale trade, of
        retail trade, of services, and of state and local governments;
*	Federal government budget data;
*	Internal Revenue Service tabulations of tax returns for corporations and for sole
        proprietorships and partnerships; and
*	Department of Agriculture farm income statistics.

Additionally, the revision will incorporate the following newly available source data and
refinements to BEA's methods:

*	Beginning with the advance estimate of GDP for the second quarter of 2016,
        BEA expects to incorporate newly available Census Bureau data on wholesale
        and retail trade inventories that are scheduled to be released in time for the
        advance estimates of the NIPAs. BEA currently estimates inventories for the
        quarter based on Census-reported inventory data for the first two months of the
        quarter and BEA assumptions for the third month. The scheduled accelerated
        release of this data by the Census Bureau will allow BEA to calculate a more
        accurate estimate of the change in private inventories component of GDP for the
        advance estimate.
*	In November 2015, the Census Bureau released revised monthly estimates of
        construction spending for January 2005 through October 2015. BEA uses this
        data to prepare annual estimates of private fixed investment for residential
        structures.  For the upcoming revision, BEA will incorporate revised Census data
        into its annual estimates of residential improvements for 2013 through 2015.
        Estimates for earlier years will be revised during a future revision of the NIPAs.
        For detail, see the FAQ "How will the revised Census Bureau construction
        spending data affect BEA's quarterly and annual estimates of private fixed
        investment?"
*	As part of its regular review and update of seasonal adjustment factors, BEA will
        continue to refine or improve its seasonal adjustments for several GDP
        components. For more information, see the FAQ, "How does BEA account for
        seasonality in GDP?"


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


                                      

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