Expenditure Aggregates

Fluctuations in aggregate spending tend to cause fluctuations in real output and employment. The most commonly accepted reason why is that prices and wages are not instantly changeable. Consequently a surge in demand will, initially at least, tend to be met by increased output; and a drop in demand, by a fall in output.

Aggregate expenditure on currently and domestically produced output is conventionally divided into four broad categories:

  • Consumption expenditure, which consists mainly of expenditure by households on non-durable items such food and entertainment, and, in most National Accounts, on durables such as televisions and furniture.
  • Investment expenditure, which consists of expenditure on capital goods such as newly produced buildings and machinery. In the data presented here investment expenditure includes both private sector and government expenditure.
  • Government expenditure, which here consists of so-called current expenditure. This is expenditure by governments for some goods or services which are non-capital items. So it includes items such as the salaries of the police and the judiciary, or drugs for NHS. [It does not include so-called ‘transfer payments’ such as the State Pension since this does not involve the purchase of any currently produced good or service. These items affect spending through the consumption expenditure of those who receive them.]
  • Net Exports, which is the difference between the value of exports and imports. Expenditure by foreigners on domestically produced goods and services is clearly a demand for domestically produced goods and services. Hence exports add to aggregate expenditure on such goods and services. But to the extent that the previous three items are expenditures on foreign goods and services (imports) they need to be subtracted if we are calculating expenditure only on domestically produced goods and services.

Aggregate expenditure – and the items that comprise it – can be expressed in nominal terms, i.e. as the amount of expenditure in £s at the time, or in real terms, i.e. the volume of goods and services that that amount of nominal expenditure would have bought if prices in a base year had been in operation. For most purposes – such as assessing the standard of living – expenditure in real terms is the appropriate measure. The data we present are in real terms.

For most countries, consumption expenditure is the major component of aggregate spending and net exports a minor component. And for most countries the investment component exhibits the greatest short-run volatility. The proportions of each of these aggregates in UK GDP illustrate these points.

Consumption expenditure has generally accounted for 60% of aggregate UK expenditure over the last 60 years; investment expenditure around 20%; current government expenditure has generally declined from about 30% to 20%; and net exports, a small and, in recent years especially, a negative proportion.

Since the mid-1970s the proportion of UK aggregate spending accounted for by consumption has tended to rise gently, and the proportion accounted for by government current expenditure has tended to fall.

Commentary – Expenditure Aggregates

The commentary examines how the main components of aggregate expenditure in the UK, US and Euro-area have responded to the 2007 financial crisis.
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Data

Sources
1. UK Annual (1948-) and seasonally-adjusted Quarterly (1955q1-) Real Consumption Expenditure, base year 2011. (Sum of ”Household Final Consumption Expenditure” and “Final Consumption Expenditure of Non-profit Institutions Serving Households”. Source, ONS, series codes ABJR&HAYO.

2. UK Annual (1948-) and seasonally-adjusted Quarterly (1955q1-) Real Investment Expenditure, base year 2011. (Sum of “Changes in Inventories including alignment adjustment” and “Total Gross Fixed Capital Formation”. Source ONS, series codes CAFU&NPQT.

3.UK Annual (1948-) and seasonally-adjusted Quarterly (1955q1-) Government Real Current Expenditure, base year 2011. Source ONS, series code NMRY.

4. UK Annual (1948-) and seasonally-adjusted Quarterly (1955q1-) Real Net Exports, base year 2011. Source, ONS, series code IKBM.
In our commentary we define real GDP as the sum of the four items given above. This differs slightly from the GDP series given in the original ONS source because of minor inconsistencies in the data.

5. Other countries’ seasonally-adjusted Quarterly (2000q1-) Expenditure Aggregates: Private Final Consumption Expenditure; General Government Final Consumption Expenditure; Gross Fixed Capital Formation; and External Balance of Goods and Services. All the series are in Millions of National Currency, national base years. Source: OECD, National Accounts, Quarterly National Accounts, Series Code, LNBQRSA.

Data series
Quarterly data on Expenditure Aggregates
Variables: UK seasonally-adjusted Real Consumption Expenditure, Real Investment Expenditure, Real Government Expenditure and Real Net Exports. Selected countries’ seasonally-adjusted Private Final Consumption Expenditure, General Government Final Consumption Expenditure, Gross Fixed Capital Formation, and External Balance of Goods and Services.

Annual data on UK Expenditure Aggregates.
Variables: UK Real Consumption Expenditure, Real Investment Expenditure, Real Government Expenditure and Real Net Exports.

Download data
All Expenditure Aggregates data are available in Excel xlsx format:
ExpenditureAggs_Data.xlsx