National Income Accounting Notes

National Income Accounting

Definition of National Income

National income represents the total income received by all economic agents within an economy, derived from the goods and services produced during a specific period.

Concept of National Income

1. Gross Domestic Product (GDP)

GDP is the total monetary value of all final goods and services produced within a country's borders during a specific period.
It can be measured at current prices or constant prices.
GDP reflects the production of goods and services within a country, regardless of who produces them.
- For example, the output produced by foreign workers in Malaysia is included in Malaysia's GDP.

2. Gross National Product (GNP)

GNP is the total market value of all final goods and services produced by a country's citizens, regardless of their location.
It measures the production of goods and services by a country's citizens, no matter where they reside.
- For example, income earned by Malaysians working abroad is included in Malaysia's GNP.
Formula:
$GNP = GDP + \text{Net Factor Income Received from Abroad}$

3. Market Price (mp) and Factor Cost (fc)

GDP can be measured at market prices, which reflect current market conditions influenced by supply and demand.
Market prices are the actual prices paid by consumers and include indirect taxes while excluding subsidies.
Factor cost measures the real price earned by producers or sellers.
Formula:
$GDP{fc} = GDP{mp} – \text{indirect tax} + \text{subsidies}$

4. Net National Product (NNP)

NNP is the total income of a nation's residents (GNP) minus losses from depreciation.
Depreciation is the wear and tear on the economy's stock of equipment and structures.
Formula:
$NNP = GNP – \text{depreciation}$

5. National Income at Factor Cost (NI)

National Income is the total income earned by a nation's residents in the production of goods and services.
It differs from NNP by excluding indirect business taxes and including business subsidies.
Formula:
$NI = NNP_{mp} + \text{subsidies} – \text{Indirect taxes}$

6. Personal Income (PI)

Personal income is the income that households and non-corporate businesses receive.
It excludes retained earnings but includes household interest income and government transfers.
Formula:
$PI = NI + \text{transfer payment} – \text{corporate Income tax} -\text{retained earning} – SOCSO – \text{insurance premium}$

7. Disposable Income (DPI)

Disposable personal income is the income that households and non-corporate businesses have left after paying all obligations to the government.
It equals personal income minus personal taxes and certain nontax payments.
Formula:
$DPI = PI – \text{Personal income tax}$

The Circular Flow of Income

Two-Sector Economy: Includes household and firm sectors, assuming no government.
Three-Sector Economy: Includes the government sector, which purchases goods from firms and labor services from households. Money flows from the government to households through transfer payments and factor payments.
Four-Sector Economy: An open economy where imports and exports occur. Money flows out with imports and in with exports.
- Trade Surplus: Exports exceed imports.
- Trade Deficit: Imports exceed exports.
- Imports are leakages, and exports are injections into the circular flow of income.

National Income Approach

1. Aggregate Expenditure (AE) Approach

Measures GDP by adding all aggregate spending on final goods and services by all economic sectors.
Formula: $GDP = C + I + G + (X – M)$
- C = Personal Consumption Expenditure: Spending by households on durable and non-durable goods and services.
- I = Gross Private Domestic Investment: Purchase of capital goods by firms and changes in firm inventories.
- G = Government Purchases/Consumption Expenditures: Government expenditure on final goods and services and direct purchases of resources.
- (X – M) = Net Export: Excess of expenditure on exports over imports.
  - X = Export: Spending by foreigners on domestically produced goods and services.
  - M = Import: Spending by domestic residents on foreign-produced goods and services.

2. Production Approach

Measures GDP by adding the value of all final goods and services produced by all economic sectors.
- Primary Sector: Uses natural resources (agriculture, forestry, fishing, mining).
- Secondary Sector: Transforms inputs into outputs (construction, manufacturing, electricity, gas, water supply).
- Tertiary Sector: Produces services (banking, trade, transport, communication).

3. Income Approach

Measures GDP by adding all incomes earned by households in exchange for factors of production.
- Compensation of Employees: Income from employment and self-employment.
- Net Interest: Money paid by private businesses to producers of money capital, including interest households receive on savings deposits, certificates of deposits, and corporate bonds.
- Rental Income: Income received by households and businesses that supply property resources.
- Corporate Profit: Earnings of owners of corporations.
  - Dividends/Distributed Profits: Part of corporate profits paid to stockholders.
  - Undistributed Profits/Retained Earnings: Monies saved by corporations for future investments.
  - Corporate Taxes: Taxes levied on corporation's net earnings.
- Proprietor’s Income: Net income of sole proprietorships, partnerships, and other unincorporated businesses.

Uses or Purposes of Measuring National Income

To measure the rate of economic growth: Allows comparison of economic activities from year to year. The rate of economic growth is calculated using real GNP/GDP.
- Formula:
 $Real NI = \frac{Real GNP{\text{this year}} – Real GNP{\text{previous year}}}{Real GNP_{\text{previous year}}}$
To measure the standard of living: Commonly measured in terms of income per capita.
- Formula:
  $\text{Per capita income} = \frac{GNP}{\text{population}}$
Distribution of income: Shows income distribution among different sectors and factors of production.
Government planning: Helps the government identify key sectors and formulate short-term and long-term plans.
Economic policy: Useful for economists to develop policies that encourage economic growth.
Public sector: Shows the relative performance of public and private sectors.
Inflationary and deflationary gaps: Helps assess the purchasing power of money and implement measures to stabilize its value.

Difficulties or Problems in Measuring National Income

Nonmarket Transactions: Uncounted household production (child care, cleaning).
Double Counting: Overstates GNP by counting intermediate goods.
Lack of Sophisticated Machinery: Makes data analysis difficult, especially in poorer countries.
Underground Economy: Excludes unreported criminal activity.
Problem of Illiteracy: Difficulties in collecting data on home-produced goods in developing countries.
Problem of Expertise: Shortage of professionals (statisticians, analysts) for accurate estimation.
False Information: Underestimation of earnings by businesses to evade taxes.

The Concept of Nominal Income and Real National Income

Nominal GDP: Uses current prices to value economic production.
Real GDP: Uses constant base-year prices to value economic production, reflecting changes in quantities produced.

GDP Deflator

Reflects the prices of goods and services but not the quantities produced.
Formula:
$GDP \text{ Deflator} = \frac{\text{Nominal GDP}}{\text{Real GDP}} \times 100$

Real GNP

Formula:
$Real GNP = \frac{\text{Base year price index}}{\text{Current year price index}} \times \text{Nominal GNP}$
or
$Real GNP = \frac{\text{Nominal GNP}}{\text{GNP deflator}}$

Per Capita Income

Refers to the average income per head of population and is used as an index of the standard of living.
Formula:
$\text{Per capita income} = \frac{\text{National income}}{\text{Total population}}$

Growth Rate

The economic growth rate of a country is measured as a percentage change in real GDP or GNP from one year to another.
Formula:
$\text{Growth rate} = \frac{GDP{\text{current year}} - GDP{\text{previous year}}}{GDP_{\text{previous year}}} \times 100$