(a) Define gross national income. (2 marks) (b) Using appropriate examples, distinguish between: (i) Personal income and disposable income. (6 marks) (ii) N...

(a) Gross national income (GNI). Gross national income is the total money value of all final goods and services produced by the nationals (residents) of a country in a year, including net income earned by its citizens abroad. It equals gross domestic product plus net factor income from abroad.

(b)(i) Personal income and disposable income.

• Personal income is the total income actually received by individuals and households from all sources (wages, rent, interest, profit, and transfer payments) before direct taxes are paid. Example: a worker earning \$1,000 in salary plus \$200 from rent has a personal income of \$1,200.
• Disposable income is the income that remains for spending and saving after direct (personal) taxes have been deducted. Using the example, if \$200 is paid as income tax, disposable income is \$1,000.

\[ \text{Disposable income} = \text{Personal income} - \text{Direct taxes} \]

(b)(ii) Nominal income and real income.

• Nominal (money) income is income measured in current money terms, at the prices ruling at the time. Example: a salary of \$500 per month.
• Real income is income measured by the quantity of goods and services it can actually buy, that is, nominal income adjusted for changes in the price level. If prices double while the \$500 salary is unchanged, real income has halved even though nominal income is the same.

\[ \text{Real income} = \frac{\text{Nominal income}}{\text{Price index}}\times 100 \]

(c) Three uses of national income statistics.

• Measuring economic performance. They show whether the economy is growing or declining over time.
• Comparing standards of living. Per capita income allows comparison between countries and across years.
• Aid to planning and policy. Governments use them to allocate resources and formulate economic policy.
• Measuring income distribution. They reveal how income is shared among sectors and groups.

Examination takeaway. Keep the deductions in order: national income leads to personal income, then to disposable income after direct tax; and always distinguish money (nominal) values from purchasing power (real) values.