Introduction to Macroeconomics and its Concepts - Economics Class 12 - Commerce

Introduction and Structure of MacroEconomics

Macroeconomics (Concept)

Macroeconomics is the branch of economics that analyses the behaviour and performance of an economy as a whole. It studies aggregate phenomena, the interrelationships between large economic sectors and the determinants of overall economic activity.

• Major topics studied in macroeconomics include national income, gross domestic product (GDP), economic growth, inflation, price levels and unemployment.
• Macroeconomics is sometimes referred to as the Income Theory or the Employment Theory because it explains how aggregate income and employment are determined and distributed across the economy.

Structure of the Macroeconomy

To study macroeconomic problems we divide the whole economy into broad sectors that interact with one another. The usual classification identifies the following sectors.

• Producer sector - firms and organisations engaged in the production of goods and services.
• Household sector - households that consume goods and services and supply factors of production (land, labour, capital, entrepreneurship).
• Government sector - the public sector which levies taxes, provides public goods and services and makes transfer payments and subsidies.
• Rest of the world sector - foreign sector that interacts through exports, imports, and capital flows.
• Financial sector - banks and other financial institutions engaged in mobilisation of savings, borrowing and lending.

Households are usually treated as owners of factor services and receive factor incomes from firms in return for these services.

Circular Flow of Income

The circular flow of income describes how money, goods and factor services circulate among different sectors in an economy. It shows the continuous movement of real resources and monetary payments that sustain production and consumption.

There are two distinct ways to view the circular flow:

• Real (Product or Physical) Flow - the movement of goods and services and factor services between sectors.
• Money (Monetary or Nominal) Flow - the movement of incomes, expenditures and payments expressed in monetary terms.

Real Flow

The real flow refers to the flow of factor services from households to producers and the corresponding flow of goods and services from producers to households.

Consider a simple two-sector economy consisting of:

• Producer sector (firms)
• Household sector (consumers and owners of factor services)

• Firms supply goods and services to households.
• Households supply factor services (labour, land, capital, entrepreneurship) to firms.
• This mutual dependence forms the real or physical side of the circular flow.

Money Flow

The money flow shows payments that accompany the real flows.

• Firms pay households factor incomes in the form of wages, rent, interest and profits.
• Households spend their incomes to buy goods and services produced by firms. This spending returns to firms as revenue.
• The circular flow is complete when monetary payments match the real flows of goods and factor services.

Circular Flow of Income: Two-Sector Model (Simplest Case)

A simple two-sector model emphasises the basic mechanics of the circular flow. The assumptions of this model are:

1. There are only two sectors in the economy: households and firms.
2. Households supply factor services to firms.
3. Firms hire factor services from households.
4. Households spend their entire income on consumption expenditure.
5. Firms sell all that they produce to households.
6. There is no government sector and no foreign trade (closed economy).

In this economy there are two types of markets:

• Product market (market for goods and services).
• Factor market (market for factors of production).

From the assumptions we can derive these equalities for a two-sector economy:

• Total production of goods and services by firms = Total consumption of goods and services by households.
• Factor payments by firms = Factor incomes of households.
• Consumption expenditure of households = Revenue (income) of firms.
• Hence, real flows of goods and factor services correspond to money flows of income and expenditure.

Phases of the Circular Flow

The circular flow can be viewed in three related phases - production, distribution and disposition (expenditure).

Production Phase

• In this phase firms combine factor services-land, labour, capital and entrepreneurship-to produce goods and services.
• Viewed in physical terms it is a real flow of output (quantities of goods and services).
• Viewed in monetary terms it becomes a money flow because produced goods have market values.

Distribution Phase (Income Phase)

• The distribution phase deals with the flow of factor incomes from firms to households.
• Factor incomes include wages (for labour), rent (for land), interest (for capital) and profit (for entrepreneurship).
• This is a money flow since incomes are paid in monetary terms.

Disposition Phase (Expenditure Phase)

• Disposition refers to how households and other sectors use their incomes, mainly on consumption and saving.
• Household expenditure on goods and services is a money flow from households back to firms.
• Savings and other uses of income alter the simple circular flow when we extend the model to include financial, government and foreign sectors.

Some Basic Concepts of Macroeconomics

1. Factor Income

• Factor income is the income received by owners of factors of production for supplying their services in the production process.
• Payments for factor services are classified as: rent (for land), wages (for labour), interest (for capital) and profit (for entrepreneurship).
• Factor income is a bilateral concept: it is both a payment by firms and an income for households.
• Factor incomes are included in national income accounts because they reflect payments for production factors used in producing goods and services.

Examples: rent, wages, interest, profit.

2. Transfer Income

• Transfer income consists of payments made without any current goods or services being provided in return. These are unilateral payments.
• Transfer payments are not included in national income because they do not correspond to production (they are not payments for factor services).
• Examples: old-age pension, scholarships, unemployment allowance, government subsidies.

Transfer payments are of two types:

• Current transfers - regular transfers from the income of the payer to recipients for consumption. They are recurring in nature. Examples: scholarships, pensions, welfare benefits.
• Capital transfers - non-recurring transfers of wealth intended for investment or capital formation. Examples: investment grants, large one-off gifts in kind, war reparations.

Stock

• A stock variable is measured at a particular point of time. It has no time dimension and represents a quantity at that instant.
• Stock variables are static for the instant measured and change only when re-measured at another point in time.
• Examples: amount of money in hand at a given date, money supply (at a point in time), water in a tank.

Flow

• A flow variable is measured over a period of time. It has a time dimension and represents a rate or quantity per unit of time.
• Flow variables are dynamic and can accumulate to form stocks.
• Examples: income per year, exports per month, spending over a quarter, water flowing in a river.

Economic (Domestic) Territory

• According to international practice, economic territory is the geographical territory administered by a government within which persons, goods and capital circulate freely.
• The criterion emphasises freedom of circulation of persons, goods and capital. Parts of political territory where such freedom does not apply are excluded from the economic territory.
• Examples: foreign embassies located within a country are treated as part of the economic territory of the sending country, not the host country.
• Other inclusions by the freedom criterion are:
  • vessels, oil rigs and floating platforms operated by residents in international waters where they hold exclusive rights (e.g. fishing boats of a country operating in waters assigned to it);
  • embassies, consulates and military establishments of a country located abroad (treated as part of the country that owns them).
• In national income accounting, the term domestic territory may therefore extend beyond the strict political frontier, depending on operational control and freedom of circulation.

Citizenship

• Citizenship is a legal status, often determined by place of birth (jus soli), descent (jus sanguinis) or by legal naturalisation procedures.
• Citizenship and residency are distinct: one may be a national (citizen) of a country but a resident elsewhere, or a resident who is a foreign national.
• Two common ways Indian citizenship arises are:
  • automatic citizenship at birth within the country (subject to legal provisions), and
  • naturalisation or legal grant of citizenship to persons born abroad if allowed by law.

Normal Resident / Resident

• A normal resident (or resident) is a person or institution whose centre of economic interest lies within the economic territory of the country.
• The centre of economic interest implies:
  • the person or institution is usually located within the economic territory for more than one year, and
  • the person or institution carries out principal economic activities (earning, spending and accumulation) from that location.
• Residency is an economic concept and may differ from nationality (citizenship). Foreigners meeting the residency criterion may be treated as residents.
• Persons who are not treated as normal residents include:
  • short-term visitors for holiday, medical treatment, conferences, study tours or business who stay for less than one year (if they stay for one year or more they become residents of the host country);
  • crew members of foreign vessels, seasonal workers who return home each season, and regular border commuters (they are residents of their own countries);
  • foreign officials, diplomats and members of foreign armed forces (whose presence is governed by special rules);
  • international organisations (e.g. World Bank, WHO) are not residents of the host country, though their locally employed staff who stay more than a year are treated as residents of the host country.
• Example: many Indians living and working permanently in the U.S., U.K. or Australia are residents of those countries, but remain Indian nationals (Non-Resident Indians from India's perspective).

Final Goods

• Final goods are goods that are used either for personal consumption or for investment (capital formation) and require no further processing before use.
• Final goods provide direct satisfaction to the consumer or are ready to be used for production as capital goods.
• Under the production boundary concept, a good becomes final when it crosses the imaginary production boundary and reaches the final consumer or when it is used as an investment by the producing unit itself.
• Examples: bread bought by a household, machinery purchased by a firm as capital equipment.

Intermediate Goods

• Intermediate goods are goods used as inputs for further production, or goods purchased for resale within the same accounting year.
• They do not provide final satisfaction directly because they are transformed into other goods or services.
• Under the production boundary, an intermediate good does not cross the line to the final consumer but moves between production units.
• Examples: sugar sold to a sweet shop for making sweets, a car bought by a dealer for resale within the same year.

Point to Remember for Final Goods and Intermediate Goods

Basis of Classification

• The classification depends not on the commodity itself but on its use:
• If a good is used for personal consumption or for investment, it is a final good.
• If a good is used for further processing or resale in the same year, it is an intermediate good.
• Example: bread bought by a household is a final good; the same bread used by a bakery to make sandwiches is an intermediate good.

Production Boundary

• The production boundary is an imaginary line around the production unit that separates production activities included in GDP from those excluded.
• If a good crosses this imaginary line to a final consumer or is used as investment inside the production unit, it is treated as a final good.
• If a good remains inside the production boundary and is transferred to another producer for further processing, it is an intermediate good.

Important Points about Intermediate Consumption

• Intermediate consumption for government and other producers includes a wide range of goods and services from ordinary stationery to sophisticated equipment used in operations.
• Intermediate consumption covers both durable and non-durable goods and services used up in the production process during the accounting period.
• Examples include petrol, electricity, lubricants, soaps, repair and maintenance costs for keeping capital stock in working order.
• Small replacement parts (e.g. tyres of a truck) are treated as intermediate consumption; major replacements that extend productive life substantially (e.g. replacement of a truck engine) may be treated as capital formation.
• Military consumables and expendable equipment used up during the period are part of intermediate consumption; durable military assets intended for long-term use are treated as capital formation.
• Value of goods received from foreign governments as transfers in kind (food, medicines) are treated depending on whether they are consumed (intermediate/ final) or represent capital transfers.

Research and Development (R&D) and Related Expenditures

• Expenditures on research, exploration and technological improvement are treated as part of production or capital formation depending on whether they generate expected future benefits and are intended for future production.
• Consumables used directly in exploratory or research activities are intermediate consumption if used within the accounting period.
• Some R&D expenditures that create durable knowledge or reproducible assets may be treated as capital formation (gross fixed capital formation) if they meet the criteria for assets.
• Other business expenses such as advertising, market research and public relations aimed at improving goodwill are typically treated as intermediate consumption unless they produce long-term intangible assets meeting asset definitions.

Final Goods - Detailed Classification

Final goods can be split into two broad groups: consumption goods and capital goods.

Consumption Goods

• Meaning: Goods and services that satisfy consumer wants directly. Examples: bread, cars bought for private use, televisions, furniture, medical care.
• Consumption goods can be further classified by durability:
  - Durable goods - goods with long expected life (several years) and relatively high value: motor cars, refrigerators, televisions, washing machines, air conditioners, computers.
  - Semi-durable goods - goods with expected life around one year or slightly more and moderate value: clothing, certain furniture, some household appliances.
  - Non-durable goods - goods that are consumed in a short period (often a single use): foodgrains, milk, edible oils, beverages, tobacco.
  - Services - intangible goods that directly satisfy wants: medical care, education, transportation, communication, domestic services.

Capital Goods

• Meaning: Capital goods are durable goods produced for use in future production processes. They are used to produce other goods and services rather than being consumed directly.
• Examples: machinery, equipment, buildings, trucks, roads, bridges, airfields, industrial machinery.
• Stocks held by producers at the end of an accounting period - raw materials, semi-finished and finished goods - form part of capital formation (inventories).
• Capital goods typically depreciate over time and require maintenance and periodic replacement.

Q. Differentiate between final goods and intermediate goods on the basis of end used classification of goods and services with example.

Ans.