Economics for BusinessUnit 824 min read
National Income: Measurement, Components & Nepal’s Economy
Unit 8 of Economics for Business explores how national income is measured (GDP, GNP, NNP), its components (consumption, investment, government spending, net exports), and how these metrics reflect Nepal’s economic performance, growth, and policy challenges.
TAKEAWAYS:
- National income measures a country’s economic output and income, with GDP (market value of final goods/services) and GNP (income earned by citizens) as key metrics.
- Nepal’s GDP growth, inflation, and remittance dependence are tracked using these measures, directly impacting policies like budget allocation and foreign aid.
- The circular flow of income shows how households, firms, and governments interact in an economy, with leakages (taxes, savings) and injections (government spending, investment).
- GDP vs. GNP matters for Nepal: GNP includes income earned by Nepali workers abroad (e.g., in Malaysia or the Gulf), while GDP does not.
- Real vs. nominal GDP distinguishes between inflation-adjusted growth and money-value growth—critical for interpreting Nepal’s economic progress.
- Exam questions often test calculations (e.g., GDP from expenditure method) and real-world applications (e.g., how remittances boost Nepal’s GDP).
1. What is National Income? Definitions and Key Concepts
National income is the total value of all goods and services produced by a country’s economy in a given period, usually a year. It reflects a nation’s economic health and is used to compare living standards, plan policies, and attract investments.
Key Terms
| Term | Definition | Example in Nepal |
|---|---|---|
| GDP (Gross Domestic Product) | Market value of all final goods/services produced within a country’s borders. | Nepal’s GDP in FY 2022/23 was $37.6 billion (World Bank). Includes tea from Ilam, hydropower from West Seti, and services from Kathmandu. |
| GNP (Gross National Product) | GDP + net income from abroad (income earned by citizens abroad minus income earned by foreigners domestically). | Nepali migrant workers’ remittances (~$10 billion/year) are part of GNP but not GDP if earned abroad. |
| NNP (Net National Product) | GNP minus depreciation (wear and tear of capital goods like machines, roads). | If Nepal’s capital stock loses $1 billion in value yearly, NNP = GNP – $1 billion. |
| PIB (Per Capita Income) | GDP divided by population. Measures average income per person. | Nepal’s PIB ( |
| Nominal GDP | GDP measured at current market prices (includes inflation). | Nepal’s nominal GDP grew by 5.2% in FY 2022/23, but some of this was due to price hikes, not real output. |
| Real GDP | GDP adjusted for inflation (using a base year’s prices). | Nepal’s real GDP growth was 3.2% in FY 2022/23 (after adjusting for inflation). |
2. How is National Income Measured? Three Methods
National income can be calculated using three approaches, all of which should yield the same result in theory. Nepal’s Central Bureau of Statistics (CBS) uses these methods to compile official data.
A. Expenditure Method (Most Common for GDP)
GDP = C + I + G + (X – M) Where:
- C = Private consumption (household spending)
- I = Gross investment (business spending on capital goods)
- G = Government spending (public infrastructure, salaries, etc.)
- (X – M) = Net exports (exports minus imports)
Worked Example: Nepal’s GDP Breakdown (FY 2022/23)
| Component | Value (in $ billion) | % of GDP | Real-World Example |
|---|---|---|---|
| Consumption (C) | 22.5 | 60% | Households spending on rice, mobile phones (Ncell), and education in private schools. |
| Investment (I) | 8.7 | 23% | Hydropower projects (e.g., West Seti) and Daraz expanding warehouses in Kathmandu. |
| Government (G) | 5.2 | 14% | NTC’s fiber-optic expansion and salaries of civil servants. |
| Net Exports (X–M) | -1.8 | -5% | Nepal imports $12 billion in goods (oil, electronics) but exports only $10.2 billion (remittances, textiles). |
Why Net Exports are Negative in Nepal? Nepal is a net importer because:
- It lacks domestic production of many goods (e.g., petroleum, vehicles).
- Remittances (income sent home by workers abroad) are not counted as exports in GDP calculations (they are part of GNP).
- Tourism revenue (~$1 billion/year) is small compared to import bills.
B. Income Method (Factor Cost Approach)
GDP = Wages + Rent + Interest + Profits + Depreciation This method sums up all incomes earned by factors of production (labor, land, capital, entrepreneurship).
Example for Nepal:
- Wages: Salaries of NTC employees, Pathao drivers, and Daraz delivery personnel.
- Rent: Income from landlords in Thamel or hydropower lease agreements.
- Interest: Returns on bank deposits (NMB, Global IME) or loans.
- Profits: Earnings of Daraz, F1Soft (eSewa’s parent company), and small businesses.
- Depreciation: Wear and tear of roads, machinery in garment factories.
Why is this method useful?
- Helps identify income inequality (e.g., top 10% earn 40% of national income in Nepal).
- Used by Nepal Rastra Bank (NRB) to assess wage growth and inflation pressures.
C. Value-Added Method (Production Approach)
GDP = Sum of value added by all firms in the economy. Value added = Revenue – Cost of intermediate goods.
Example: How Nepal’s Tea Industry Contributes to GDP
- Raw tea leaves (grown in Ilam) → Value added = $0.50/kg.
- Processed in a factory (e.g., Twinings Nepal) → Adds $1.50/kg.
- Sold to exporters → Adds $2.00/kg.
- Final sale in UK/USA → Total value added = $4.00/kg (counted in Nepal’s GDP).
Why is this method important for Nepal?
- Helps track agriculture (24% of GDP), industry (12%), and services (64%).
- Explains why remittances are not part of GDP but tourism is (since tourism services are produced domestically).
3. Real vs. Nominal GDP: Why Adjusting for Inflation Matters
Nominal GDP = GDP at current prices (includes inflation). Real GDP = GDP adjusted for inflation (constant prices).
Example: Nepal’s GDP Growth in FY 2022/23
| Metric | Value | Interpretation |
|---|---|---|
| Nominal GDP | $37.6B | Includes price hikes (e.g., petrol prices rose 20% due to global oil shocks). |
| Real GDP | +3.2% | After adjusting for inflation, the actual production grew by only 3.2%. |
| Inflation | 7.8% | Prices rose faster than production, reducing purchasing power of Nepali rupee. |
Why does this matter for Nepal?
- Banks (NMB, Standard Chartered) use real GDP to decide loan interest rates.
- NRB monitors real GDP to set monetary policy (e.g., increasing repo rate to curb inflation).
- Investors (e.g., Daraz, F1Soft) care about real growth to plan expansions.
4. GDP vs. GNP: Why It Matters for Nepal
| Feature | GDP (Gross Domestic Product) | GNP (Gross National Product) |
|---|---|---|
| Scope | Production within Nepal’s borders. | Income earned by Nepali citizens, anywhere. |
| Includes | - Hydropower from West Seti. | - Remittances from Nepali workers in Malaysia. |
| Excludes | - Income earned by Chinese workers in Upper Mustang. | - Profits earned by Coca-Cola Nepal (foreign-owned). |
| Relevance | Measures domestic economic activity. | Measures total income of Nepali citizens. |
Worked Example: Nepal’s GNP vs. GDP
- GDP (2023): ~$37.6 billion (production inside Nepal).
- GNP (2023): ~$47.8 billion (GDP + $10.2 billion remittances).
- Difference: $10.2 billion (remittances from abroad).
Why is GNP higher than GDP for Nepal?
- 1.5 million Nepali workers send ~$10 billion/year in remittances.
- This income is not part of GDP because it’s earned abroad.
- However, remittances boost consumption (C) in Nepal, indirectly supporting GDP.
5. Circular Flow of Income: How Money Moves in Nepal’s Economy
The circular flow model shows how households, firms, and government interact in an economy.
flowchart TD
A["Households"] -->|"Spend on goods/services"| B["Firms (Daraz, NTC, Tea Factories)"]
B -->|"Pay wages, rent, interest"| A
A -->|"Pay taxes"| C["Government (NRB, CBS)"]
C -->|"Provide public goods"| A
C -->|"Government spending"| B
B -->|"Save/Invest"| D["Financial Markets (NMB, SEB)"]
D -->|"Loan to firms"| B
B -->|"Export to foreign firms"| E["Rest of the World"]
E -->|"Import goods"| BKey Leakages and Injections in Nepal’s Economy
| Leakages (Money leaving the circular flow) | Injections (Money entering the circular flow) |
|---|---|
| Taxes ($3.5B/year to NRB) | Government spending ($5.2B on infrastructure, salaries). |
| Savings (Households deposit in banks). | Investment (Firms borrow from banks to expand). |
| Imports ($12B/year) | Exports ($10.2B, including remittances*). |
| Depreciation (Wear and tear of capital). | New capital formation (e.g., new hydropower plants). |
*Remittances are not counted as exports in GDP but are injections into household income.
6. National Income in Nepal: Key Statistics and Trends
A. Nepal’s GDP Growth (2015–2023)
| Year | Nominal GDP ($B) | Real GDP Growth (%) | Key Events |
|---|---|---|---|
| 2015/16 | 23.5 | 0.5 | Earthquake devastated infrastructure; slow recovery. |
| 2017/18 | 28.3 | 6.3 | Post-earthquake reconstruction boosted construction sector. |
| 2019/20 | 32.1 | 6.8 | Remittances hit record high ($8.8B); hydropower exports grew. |
| 2021/22 | 35.8 | 4.9 | COVID-19 disrupted tourism and supply chains. |
| 2022/23 | 37.6 | 3.2 | Global inflation pushed up import costs; real growth stagnated. |
Why was growth slow in 2022/23?
- Global inflation increased import costs (e.g., petrol prices up 20%).
- Supply chain disruptions (e.g., China’s COVID lockdowns delayed raw materials).
- Low productivity in agriculture (tea, jute) due to climate shocks.
B. Sectoral Contribution to Nepal’s GDP (2022/23)
| Sector | % of GDP | Key Industries/Examples | Challenges |
|---|---|---|---|
| Services | 64% | Tourism, banking, IT, remittances, e-commerce. | Low productivity, brain drain (skilled workers migrate abroad). |
| Agriculture | 24% | Tea, jute, rice, hydropower. | Climate change (droughts, floods), lack of modern tech. |
| Industry | 12% | Garments, cement, hydropower. | Energy shortages, high import dependence (e.g., machinery). |
Why is services the dominant sector?
- Remittances (income sent home by workers abroad) are not part of GDP but boost consumption.
- Digital economy (eSewa, Khalti, Daraz) is growing but still small (~5% of GDP).
- Tourism (~$1 billion/year) is vulnerable to global shocks (e.g., COVID, political instability).
C. Nepal’s Income Inequality (Lorenz Curve)
Nepal has high income inequality, with the top 10% earning 40% of national income.
Gini Coefficient for Nepal: 0.42 (0 = perfect equality, 1 = perfect inequality). Comparison:
- Sweden: 0.28 (low inequality)
- India: 0.36
- Nepal: 0.42 (high, similar to Brazil).
Why does this matter?
- Poverty reduction is slow (23% still below poverty line).
- Tax collection is low (~12% of GDP) because the rich evade taxes.
- Government spending on health/education is insufficient.
7. National Income and Macroeconomic Policies in Nepal
Nepal’s national income data guides key policies:
| Policy Area | How National Income Data is Used | Example in Nepal |
|---|---|---|
| Fiscal Policy | Decides tax rates and government spending based on GDP growth. | If GDP grows >6%, NRB may increase tax on luxury imports (e.g., cars, alcohol). |
| Monetary Policy | Adjusts interest rates to control inflation (linked to real GDP growth). | In 2022, NRB raised repo rate to 8.5% to curb inflation (which hit 7.8%). |
| Foreign Aid | Donors (World Bank, ADB) allocate funds based on GDP per capita and poverty rates. | World Bank approved $500M for Nepal’s Post-Disaster Recovery Project (2015). |
| Trade Policy | Decides tariffs and export incentives based on net exports (X–M). | Nepal subsidizes hydropower exports to India to improve trade balance. |
| Poverty Reduction | Targets PIB (per capita income) to set minimum wage and social programs. | Government increased minimum wage to Rs. 20,000/month (2023) based on inflation data. |
8. Limitations of National Income Accounting
While GDP and GNP are useful, they have major limitations:
| Limitation | Explanation | Example in Nepal |
|---|---|---|
| Ignores Non-Market Activities | Does not count household work (e.g., cooking, childcare) or black market activities. | If a housewife cooks meals worth Rs. 50,000/month, it’s not counted in GDP. |
| Does Not Measure Well-Being | High GDP ≠ happy citizens (e.g., Bhutan uses Gross National Happiness). | Nepal has high GDP growth but low life satisfaction due to corruption, pollution. |
| Environmental Degradation | Does not account for pollution costs or resource depletion. | Melting glaciers (due to climate change) reduce long-term agricultural output. |
| Underground Economy | Black money (e.g., unreported remittances, smuggling) is excluded. | Estimated 20–30% of Nepal’s economy is informal (CBS). |
| Income Distribution | GDP growth can hide inequality (e.g., rich get richer). | Top 1% own 30% of wealth in Nepal (OxFam report). |
Alternative Measures Used in Nepal:
- Human Development Index (HDI): Nepal’s HDI = 0.594 (2022, "Medium" development).
- Multidimensional Poverty Index (MPI): 23% of Nepalis are multidimensionally poor.
- Gross National Happiness (GNH): Bhutan’s approach, but Nepal uses survey-based well-being indices.
## In the real world
eSewa and Khalti (Digital Payments)
- Idea Used: National Income Measurement (Expenditure Method)
- How? eSewa and Khalti transactions are part of private consumption (C) in Nepal’s GDP. When you pay for mobile recharge, bills, or shopping via these apps, it contributes to C (60% of GDP).
- Real Example: In FY 2022/23, digital transactions in Nepal exceeded Rs. 3 trillion (~$24 billion). This boosts GDP because it represents final consumption expenditure.
Daraz (E-Commerce)
- Idea Used: Investment (I) and Net Exports (X–M)
- How? Daraz’s warehouse expansion in Kathmandu is part of gross investment (I, 23% of GDP). However, many products sold on Daraz are imported (e.g., electronics, cosmetics), which increases imports (M), worsening Nepal’s trade deficit (X–M = -$1.8B).
- Real Example: Daraz’s Rs. 5 billion warehouse in Chobhar (2022) was funded by foreign investment, contributing to I but also increasing Nepal’s import dependency.
Nepal Rastra Bank (NRB) and Monetary Policy
- Idea Used: Real vs. Nominal GDP and Inflation
- How? NRB uses real GDP growth to decide interest rates. If inflation is high (e.g., 7.8% in 2022), NRB increases the repo rate to cool down demand.
- Real Example: In June 2022, NRB raised the repo rate from 6% to 8.5% because nominal GDP growth was outpacing real growth, signaling overheating demand.
Remittances and GNP (Nepali Workers Abroad)
- Idea Used: GNP vs. GDP
- How? The $10 billion in remittances (2023) is not part of GDP but boosts GNP. These funds are spent on consumption (C), indirectly supporting GDP.
- Real Example: A Nepali nurse in the UK earning £30,000/year sends £20,000 home. This £20,000 is part of Nepal’s GNP but not GDP (since it’s earned abroad). However, when spent on groceries, education, or a house in Nepal, it increases C (consumption) in GDP.
NTC and Government Spending (G)
- Idea Used: Expenditure Method (G Component)
- How? NTC’s fiber-optic expansion and salaries of 20,000 employees are part of government spending (G, 14% of GDP).
- Real Example: NTC’s Rs. 20 billion 4G expansion (2023) was funded by government loans, directly adding to G and indirectly boosting GDP via better connectivity for businesses.
## Exam Tip
Memorize the Three Methods of Calculating GDP
- Expenditure (C + I + G + (X–M)), Income (Wages + Rent + Interest + Profits), and Value-Added are highly testable.
- Example Question: "Calculate Nepal’s GDP if C = Rs. 3 trillion, I = Rs. 1 trillion, G = Rs. 500 billion, and (X–M) = -Rs. 200 billion."
- Answer: GDP = 3 + 1 + 0.5 – 0.2 = Rs. 4.3 trillion.
Differentiate GDP, GNP, NNP, and PIB
- GDP = Domestic production.
- GNP = GDP + Net income from abroad (remittances).
- NNP = GNP – Depreciation.
- PIB = GDP / Population.
- Example Question: "Why is Nepal’s GNP higher than its GDP?"
- Answer: Because of remittances from Nepali workers abroad (~$10B/year).
Real vs. Nominal GDP
- Nominal GDP includes price changes (inflation).
- Real GDP is inflation-adjusted.
- Example Question: "If Nepal’s nominal GDP grew by 8% but inflation was 5%, what was the real GDP growth?"
- Answer: Real GDP = (1.08 / 1.05) – 1 = 2.86% (use the formula: Real Growth = Nominal Growth – Inflation).
Circular Flow of Income
- Leakages = Taxes, Savings, Imports, Depreciation.
- Injections = Government Spending, Investment, Exports.
- Example Question: "What happens if injections exceed leakages in Nepal’s economy?"
- Answer: Economic growth increases (since more money is circulating).
Sectoral Contribution to GDP
- Services (64%), Agriculture (24%), Industry (12%).
- Example Question: "Why is Nepal’s agriculture sector inefficient despite contributing 24% to GDP?"
- Answer: Due to lack of technology, climate shocks (droughts/floods), and small landholdings.
Limitations of GDP
- Does not measure:
- Non-market activities (housework).
- Income inequality (Gini coefficient).
- Environmental degradation.
- Black market (smuggling, unreported remittances).
- Example Question: "How does Nepal’s underground economy affect GDP measurement?"
- Answer: It understates GDP because black market transactions (e.g., smuggling, unreported remittances) are excluded.
- Does not measure:
Policy Applications
- High inflation? → Increase repo rate (NRB’s tool).
- Slow GDP growth? → Increase government spending (G) or cut taxes.
- Trade deficit? → Promote exports (e.g., hydropower, textiles) or reduce imports (tariffs).
## Practice Questions (Exam-Style)
Short Answer (5 marks) "Explain the difference between nominal GDP and real GDP with a numerical example using Nepal’s data."
Calculation (7 marks) *"Given the following data for Nepal in FY 2023:
- Private consumption (C) = Rs. 3,000 billion
- Gross investment (I) = Rs. 900 billion
- Government spending (G) = Rs. 500 billion
- Exports (X) = Rs. 1,200 billion
- Imports (M) = Rs. 1,500 billion Calculate Nepal’s GDP using the expenditure method. Also, compute the trade balance (X–M)."*
Essay (10 marks) "Discuss the limitations of using GDP as a measure of economic development. How does Nepal address these limitations? Use examples from Nepal’s economy."
Data Interpretation (6 marks) *"The following table shows Nepal’s sectoral contribution to GDP for two years:
Sector 2020 (%) 2023 (%) Agriculture 26 24 Industry 10 12 Services 64 64 Analyze the changes and explain possible reasons for the shift in the industry sector’s contribution."*
## Summary Table: Key Formulas and Concepts
| Concept | Formula/Definition | Example (Nepal) |
|---|---|---|
| GDP (Expenditure) | C + I + G + (X – M) | Rs. 4.3 trillion (2023) = Rs. 3T (C) + Rs. 900B (I) + Rs. 500B (G) – Rs. 200B (X–M). |
| GNP | GDP + Net income from abroad | GNP = GDP + $10B (remittances). |
| Real GDP Growth | [(Nominal GDP / GDP Deflator) – 1] × 100 | If nominal GDP = 8%, inflation = 5%, real GDP = 2.86%. |
| PIB | GDP / Population | Nepal’s PIB = $37.6B / 30M = ~$1,250 (2023). |
| Trade Balance | Exports (X) – Imports (M) | Nepal’s trade balance = $10.2B – $12B = -$1.8B (deficit). |
| Gini Coefficient | Measures inequality (0 = equal, 1 = unequal) | Nepal’s Gini = 0.42 (high inequality). |
## Final Revision Checklist
✅ Methods of measuring GDP: Expenditure, Income, Value-Added. ✅ GDP vs. GNP vs. NNP vs. PIB: Know the differences and Nepal’s data. ✅ Real vs. Nominal GDP: How to adjust for inflation. ✅ Circular Flow of Income: Leakages and injections. ✅ Nepal’s GDP composition: Services (64%), Agriculture (24%), Industry (12%). ✅ Limitations of GDP: Non-market activities, inequality, environmental costs. ✅ Policy applications: How NRB and government use GDP data.
Based on the TU BIM syllabus for Economics for Business (ECO206), unit 8.
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