Consumption goods, capital goods, final goods, intermediate goods

In the circular flow of income, one person's or sector's expenditure becomes another sector's income. Consequently, total income and total expenditure are closely connected and, with appropriate accounting treatment, equal for the economy. This identity helps economists understand sectoral interdependence and analyse national income and demand.

A machine used by a factory for several years is a durable productive asset. It supplies capital services repeatedly rather than being used up in one production cycle. Since the factory buys it for final use in production, it is classified as a final capital good, not an intermediate good.

Unsold finished goods have already been produced during the year, even though buyers have not yet purchased them. They are recorded as an increase in inventories, or change in stock, which is included in investment expenditure. This prevents current production from being omitted from national income.

The tractor is purchased for final use by the farmer and provides productive services in agriculture over many years. It is not used up in one production cycle and is not bought for resale. Thus it is a final capital good, while fuel consumed by it would generally be an intermediate input.

An expenditure that substantially increases a machine's productive capacity or useful life is more than routine maintenance. It improves the productive asset and creates future economic benefits over several periods. Consequently, it is treated as capital formation or investment. Ordinary repairs that merely maintain existing capacity would generally be intermediate consumption.

Semi-finished goods or work in progress represent production already undertaken but not yet completed or sold. Their value is included in the change in inventories for the accounting period. They are not automatically excluded merely because they are incomplete; the inventory measure captures the value of current production held by the producer.

A trader buys the bicycle for resale, so it has not yet reached final use and is treated as an intermediate or stock item in the trading chain. A household buys the second bicycle for direct use, making it a final consumption good. Being finished does not automatically make a good final.

A consumer durable can be used for many years, but durability alone does not make it a capital good. A household car is purchased for personal consumption and gives direct satisfaction. Cars used by a taxi company or school, and machines used by a factory, support production or services and therefore have capital-good characteristics.

Paper purchased by a publisher is an input that is transformed into a printed book, so it is an intermediate good for the publisher. A library buys the completed book for continued use in providing reading and educational services. In this institutional context, the book functions as a final capital good, not as an input for resale.

Raw material becomes intermediate consumption only when it is actually used or transformed in the production process. If it remains unused at year-end, it is recorded as an increase in inventories. This treatment recognises that the material is still an asset held by the producer and has not yet contributed to current intermediate consumption.

The household refrigerator is bought for direct personal use and provides consumption services, so it is a final consumption good. The restaurant refrigerator is a durable asset used to store food while providing restaurant services. It supports production over time and is therefore a final capital good.

When a producer uses part of its own output to create a durable machine for its own future production, the activity represents own-account capital formation. The resulting machine is a final capital good because it is not merely consumed during current production; it adds to the producer's productive assets and future capacity.

Oil and replacement parts used for routine maintenance are consumed during the repair activity and become part of the current cost of operating the factory. They do not normally create a separate new productive asset or substantially extend the machine's capacity. Therefore, they are treated as intermediate inputs rather than final capital goods.

A major improvement that substantially increases a machine's productive capacity or useful life provides benefits over several future periods. It is therefore capital in nature and is treated like capital formation. This differs from routine repairs, which only maintain existing capacity and are generally recorded as intermediate consumption.

A newly purchased dwelling is treated as capital formation in national income accounting, even when the buyer is a household. The dwelling provides housing services over many years and is therefore a durable fixed asset. It is not treated like ordinary household consumption expenditure, because the purchase creates or adds to the stock of fixed capital. This special treatment applies to new residential construction and dwellings.

The incorrect classification is option D. Coal bought by a power plant is burned as a fuel input to generate electricity and is used up during production. It is therefore an intermediate good, not a final capital good. By contrast, a taxi company's car is a durable productive asset, a household car serves consumption, and flour is an input into bakery production.

The screen is purchased as a component that becomes part of the finished mobile phone, so it is an intermediate good for the manufacturer. The assembly-line machine is not incorporated into one phone or used up immediately; it repeatedly provides productive services and is therefore a final capital good. The two items have different classifications because their roles in production differ.

Food purchased by a household is consumed directly to satisfy the household's wants, so it is a final consumption good. Food purchased by an airline to serve passengers is used as part of the airline's transport and hospitality service. From the airline's perspective, it is an intermediate input. The physical product is identical, but its classification changes with the purchaser's purpose and use.

Although bolts are normally small intermediate inputs, bolts used for installation and permanently incorporated into a new machine form part of the machine’s acquisition or capital cost. Their accounting treatment follows the completed capital asset because they contribute to its installation and productive capacity rather than ordinary consumption.

Prepared food purchased by a catering company to provide an event service is an intermediate good from the caterer's perspective. The food is incorporated into, or supplied as part of, a broader service sold to the client. In contrast, food bought by a household, student, or tourist for personal eating directly satisfies consumption needs and is a final consumption good for that buyer.

Consumption goods provide final satisfaction, while capital goods provide services over time to support production. Both are final goods because they are not purchased as ordinary raw materials to be transformed into another product during the current production process. Their uses differ, but neither is an intermediate input in that sense.

The correct basis is the good’s economic use, the identity of its buyer, and its position in the production chain. A good may be final for one user but intermediate for another; for example, diesel is final for a household but intermediate for a power plant. Name, price, colour, and packaging do not determine its national-income category.

Unsold cars are already finished and require no further production by the manufacturer. They are therefore final output, even though they have not yet been purchased by consumers. In national-income accounting, the increase in such unsold stock is recorded as inventory investment, a component of investment expenditure. Excluding it would understate current production.

A final good is purchased for final use in the accounting period and is not bought for further production or resale. It may be a consumption good, such as food purchased by a household, or a capital good, such as a machine purchased by a firm. Thus, being final does not depend on whether the good is durable or quickly used.

A newly installed machine is acquired for final capital formation and supplies productive services repeatedly over several production periods. Its value is not completely used up in one cycle, although depreciation occurs gradually. It is therefore a final capital good. Its price, material, or sale to a household is not the defining criterion.