Investment spending is a critical component of GDP and overall economic growth. However, not all expenditures count as investment spending. When calculating investment spending, economists exclude certain components. Understanding what is excluded provides important context on the meaning and limitations of investment spending data. This article will examine the key components that actual investment spending does not include and why they are excluded from the calculations. Proper comprehension of investment spending and GDP requires analyzing what is included as well as what is excluded from the metrics. Excluding certain components helps avoid double counting and maintains consistency in methodology over time.

Consumption spending by households is not considered investment
Investment spending refers to expenditures on newly produced capital goods by firms, governments, and households. It does not include consumption spending, which is expenditures by households on goods and services for current satisfaction. For example, when a family buys groceries or pays for a vacation, that is consumption spending. Buying food or taking a trip provides utility today; it is not an investment in future production capabilities. This spending is already counted in the consumption component of GDP. If consumption spending was also counted as investment, it would result in double counting. Therefore, consumption expenditure by households is not considered a component of actual investment spending.
Resale of existing assets not counted in investment spending
Investment spending aims to measure new additions to a nation’s capital stock resulting from current production. Therefore, expenditures on existing capital goods do not count as investment. For example, when Company A buys a fleet of delivery trucks from Company B, that transaction alone does not add to the capital stock. The trucks were previously produced and are not a new investment. Likewise, purchase of existing shares on the stock exchange is not investment spending because no new capital is produced. However, any transactions fees or commissions paid to facilitate the purchase would count as investment in the financial services industry.
Intermediate goods excluded to prevent double counting
Intermediate goods refer to products used as inputs in the production process by firms. Examples include raw materials, component parts, electricity, etc. Spending on intermediate goods is not counted as investment because including it would result in double counting value added. The value of intermediate goods is already embedded in the price of the final goods they are used to produce. Counting intermediate goods purchases separately would essentially double count their value in GDP. Only finished goods purchased for final use count toward investment. However, spending on intermediate services does count if purchased from another firm.
Illegal production and transactions not included in investment data
Investment spending aims to measure lawful contributions to a nation’s productive capacity. Therefore, spending related to illegal production is excluded from investment and GDP. Examples include production of narcotics, prostitution services, black market or stolen goods, etc. Including such activity would portray an inaccurate picture of an economy’s true productive capabilities. Additionally, lack of regulation and transparency around illegal markets would make measurement highly difficult. However, once legalized, formerly illegal production would be included in GDP and investment. Overall, excluding illegal markets simplifies methodology and helps maintain data integrity.
In summary, actual investment spending does not include household consumption, resale of existing assets, intermediate goods, and illegal production. Excluding these components avoids double counting, maintains consistency over time, and portrays a more accurate picture of productive investment in an economy. Understanding what is excluded from investment spending calculations is just as important as comprehending what is included.