- National income aggregates are classified as Domestic/National, Gross/Net, and Market Price/Factor Cost, giving 8 aggregates.
- Gross = Includes Depreciation
- Net = Gross − Depreciation
- Domestic = Within Domestic Territory
- National = Domestic + NFIA
- Market Price = Factor Cost + Taxes − Subsidies
- Factor Cost = Income received by Factors of Production
- NNPFC (National Income) is the best measure of national income.
- CBSE (post-2015) highlights GVA at Basic Prices and GDP at Market Prices instead of GDP at Factor Cost.
Definitions [2]
Define the following: Value Addition
Value Addition: Value addition on a good refers to the increase in the value of good at each successive stage of production. Algebraically, Value Addition is the difference between the total value of the output and the total value of the intermediate consumption.
Value Addition = Total Value of Output – Total Value of Intermediate Consumption.
Definition: Private Income (According to C.S.O.)
- "Private income is the total of factor incomes from all sources and current transfers from the Government and rest of the world accruing to private sector." – C.S.O.
- Private income refers to the current income received from all the sources of private sector consisting of private enterprises and factor owners.
- Private income refers to the income obtained by private individuals from any source whether productive or unproductive.
Formulae [28]
Formula: Net Investment
Net Investment = Gross Investment – Depreciation
Formula: GDP by Value Added Method
\[\mathrm{GDP}\equiv\sum_{i=1}^N\mathrm{GVA}_i\]
Formula: Gross Value Added (GVA)
\[GVA_i\equiv Q_i-Z_i\equiv V_i+A_i-Z_i\]
Where:
- \[Q_i\] = Value of output of firm \[i\]
- \[Z_i\] = Value of intermediate goods used
- \[V_i\] = Value of final goods sold
- \[A_i\] = Addition to inventories
Formula: Gross Domestic Product at Market Price (GDPMP)
GDPMP = C + I + G + (X − M)
Where:
- C = Private Final Consumption Expenditure
- I = Gross Domestic Investment Expenditure
- G = Government Final Consumption and Investment Expenditure
- X − M = Net Exports (Exports − Imports)
Formula: National Income at Factor Cost
NNPFC = GDPMP − Depreciation − Net Indirect Taxes + NFIA
Where:
- Depreciation = Consumption of Fixed Capital
- Net Indirect Taxes (NIT) = Indirect Taxes − Subsidies
- NFIA = Net Factor Income from Abroad
OR (Direct Formula)
NI = C + I + G + (X − M) + (R − P)
Where:
- R − P (NFIA) = Net Receipts/Net Factor Income from Abroad
Formula: National Income
\[NDP_{FC}\] = Compensation of Employees + Operating Surplus + Mixed Income
\[NNP_{FC}\] (National Income) = \[NDP_{FC}\] + NFIA
Formula: National Income by Income Method
National Income (NI) using this income method is expressed as:
NI = R + W + I + P + MI + (X − M) + (R − P)
Where:
- R: Rent (including imputed rent of owner-occupied houses and income from government property)
- W: Wages and salaries (compensation of employees)
- I: Interest
- P: Profits (including distributed, undistributed, and corporate tax)
- MI: Mixed income of self-employed (where labour and capital income cannot be separated)
- X−M: Net exports (exports minus imports of goods and services)
- R−P: Net receipts from abroad (net income from abroad, such as factor income received from the rest of the world minus factor income paid abroad)
In words, national income is the sum of all domestic factor incomes plus net exports and net factor receipts from abroad.
Formula: Gross Value Added (GVA)
GVA = Total Output − Intermediate Consumption
- Total Output: Value of all goods and services produced.
- Intermediate Consumption: Value of goods and services used up in the production process.
- GVA represents the value added by producers during production.
Key Relationships & Formulas
Step 1: From Factor Cost to Basic Prices
GVA at Factor Cost + Net Production Taxes = GVA at Basic Prices
Step 2: From Basic Prices to Market Prices
GVA at Basic Prices + Net Product Taxes = GVA at Market Prices (GDP at Market Prices)
NNP from GNP
NNP = GNP - Depreciation
GNP from GDP
GNP = GDP + Net factor income from abroad
where
Net factor income from abroad = Factor income earned by domestic factors abroad
Personal Income (PI)
PI = National Income − Undistributed profits − Net interest payments made by households − Corporate tax + Transfer payments to households
National Income (NI) from NNP at market prices
or
NNP at factor cost = NNP at market prices − Net indirect taxes
Where,
- Net Indirect Taxes = Indirect Taxes − Subsidies
- This gives NNP at Factor Cost, also called National Income.
Personal Disposable Income
PDI = PI − Personal tax payments − Non-tax payments
Formula: National Disposable Income
National Disposable Income = Net National Product at Market Prices + Other Current Transfers from the Rest of the World
Formula: Private Income
1. Domestic Product Approach
Private Income = Factor income from NDP accruing to private sector + National debt interest + Net factor income from abroad + Current transfers from government + Other net transfers from rest of the world
2. National Income Approach (NNP at Factor Cost)
Private Income = NNP at FC − Government property & entrepreneurial income − Savings of non-departmental govt. enterprises + Interest on national debt + Net current transfers from government + Net current transfers from abroad
3. C.S.O. Approach (Alternative)
Private Income = National Income + Transfer payments + Interest on public debt − Social securities − Profits & surpluses of public undertakings
Or equivalently:
Private Income = Domestic Income + Net factor income from abroad + Net transfer payments − Government income
Formula: Gross National Product at Factor Cost (GNPFC)
GNPFC = GNPMP − Net Indirect Taxes
OR
GNPFC = GNPMP − Net Product Taxes − Net Production Taxes
Formula: Net National Product at Market Prices (NNPMP)
NNPMP = GNPMP − Depreciation
OR
NNPMP = NDPMP + NFIA
Formula: Net National Product at Factor Cost (NNPFC) / National Income (NI)
NNPFC = GNPFC − Depreciation
OR
NNPFC = NDPFC + NFIA
OR
NNPFC = NNPMP − Net Product Taxes − Net Production Taxes
Formula: Net Domestic Product at Factor Cost (NDPFC)
NDPFC = GDPFC − Depreciation
OR
NDPFC = NDPMP − Net Product Taxes − Net Production Taxes
Formula: Net Domestic Product at Market Prices (NDPMP)
NDPMP = GDPMP − Depreciation
Formula: Gross Domestic Product at Factor Cost (GDPFC)
GDPFC = GDPMP − Net Indirect Taxes (NIT)
Formula: Gross Domestic Product at Market Prices (GDPMP)
GDPMP = C + I + G + (X − M)
Formula: Gross National Product at Market Prices (GNPMP)
GNPMP = GDPMP + NFIA
Formula: Consumer Price Index (CPI)
\[\mathrm{CPI}=\frac{\text{Cost of fixed basket in current year}}{\text{Cost of same basket in base year}}\times100\]
Formula: Real GDP
Value of current year output at base year prices.
Real GDP = ∑ (Current year quantity × Base year price)
Formula: GDP Deflator
Using nominal GDP = GDP and real GDP = gdp:
\[\text{GDP Deflator}=\frac{\text{Nominal GDP}}{\mathrm{Real~GDP}}\]
In percentage form:
\[\text{GDP Deflator }(\%)=\frac{\text{Nominal GDP}}{\mathrm{Real~GDP}}\times100\]
Formula: Nominal GDP
Key Points
Key Points: Macroeconomics Vs Microeconomics
- Microeconomics studies individual consumers, firms, and markets; Macroeconomics studies the economy as a whole.
- Micro focuses on individual prices and output; Macro focuses on aggregate output, employment, and price level.
- Macroeconomics addresses key questions: price level, employment, macroeconomic indicators, and state policy.
- Macro simplifies by treating all goods/services as a single representative/aggregate commodity.
- Micro analyses parts of the economy; Macro analyses the whole economy.
Microeconomics vs. Macroeconomics
| Basis | Microeconomics | Macroeconomics |
|---|---|---|
| Scope | Individual markets, consumers, firms | Economy as a whole |
| Deals with | Individual prices and output | Aggregate output, employment, price level |
| Tools | Individual supply & demand | Aggregate indicators |
| Importance | Price determination in single markets | Understanding economy-wide phenomena |
| Policy use | Firm/industry-level decisions | Government/state policy |
| Assumptions | Individual rationality | Full aggregation (representative commodity) |
| Examples | Price of wheat, a firm's output | GDP, national unemployment rate |
Key Points: Representative Goods and Sectors
- A single representative good is a useful but limited simplification in macroeconomics.
- The economy is better understood when broken into sectors: agriculture, industry, services, households, business, and government.
- Each sector has different production technologies, prices, and labour types.
- There is both interdependence and rivalry between sectors (e.g., agriculture vs. industry).
- Macroeconomics studies output, price, and employment levels at the individual sector level.
- Households, business, and government are three key interrelated actors in a democratic economy.
Key Points: Macroeconomic Agents and Government Role
- Microeconomics studies individual agents; macroeconomics studies the economy as a whole.
- Economic agents include consumers, producers, government, banks, and corporations.
- Macroeconomic agents are primarily the State and statutory bodies (RBI, SEBI), whose goals are set by law or the Constitution.
- Government intervention is needed when markets do not exist, fail to clear, or cannot achieve social goals.
- Social goals include employment, education, health, defence, and public welfare.
- Policy tools include taxation, budgetary policy, money supply, interest rates, and wages.
- These interventions are particularly significant in developing countries like India.
Key Points: Emergence of Macroeconomics
- Macroeconomics emerged as a distinct branch of economics to study the economy as a whole.
- Classical economists assumed full employment — this was the dominant view before the Great Depression.
- The Great Depression of 1929 caused massive unemployment and output collapse, challenging classical assumptions.
- In the USA, unemployment rose from 3% to 25% (1929–1933) and output fell by about 33%.
- Keynes's General Theory (1936) provided a new framework by analyzing aggregate economic behaviour.
- This laid the foundation for macroeconomics as a separate field of study.
Key Points: Context of the Present Book of Macroeconomics
- A capitalist economy is based on private ownership, and most goods and services are produced for sale in the market rather than for self-consumption.
- Entrepreneurs control firms, make important decisions, bear risks, and organise production using land, labour, and capital.
- Land, labour, and capital are the main factors of production used to produce goods and services.
- Revenue earned from selling output is distributed as rent to landowners, wages to workers, interest to capital providers, and profit to entrepreneurs.
- A part of the profit is often reinvested in new machinery, factories, and technology, increasing the productive capacity of the economy.
- Households consume goods and services, save income, pay taxes, and earn income in the form of wages, rent, interest, and profits.
- The economy is connected to the rest of the world through exports, imports, and the movement of capital between countries.
Key Points: Meaning of Economic Wealth and Final Goods
- A country’s wealth depends on how well it uses resources to produce goods and services.
- Final goods are goods for final use (like a shirt); they are not used for further production.
- Whether a good is final depends on use: at home (final good), in a shop or factory (intermediate input).
- Final goods are of two types: consumption goods (for direct use) and capital goods (machines, etc., used to produce other goods).
- Intermediate goods (like steel for cars) are used only as inputs in production and are not final goods.
Key Points: Stocks, Flows and Depreciation
- Money is used as a common measure to calculate the total value of final goods and services.
- Intermediate goods are not counted separately to avoid double-counting.
- Flows are measured over a period of time (e.g., income, output, profit).
- Stocks are measured at a particular point in time (e.g., capital, machinery).
- Changes in stocks over time are called flows.
- In a water tank, the water entering per minute is a flow, while the water stored is a stock.
- Gross Investment is the total value of capital goods produced.
- Depreciation is the loss in value of capital due to wear and tear.
- Net Investment = Gross Investment − Depreciation.
- Net Investment represents the actual addition to the economy's capital stock.
Key Points: Capital Formation, Trade-off & Circular Flow of Income
- Depreciation is the annual allowance for wear and tear of a capital good, equal to its cost divided by its useful life in years.
- In any year, total final output is split between consumption goods and capital goods; more capital goods now usually mean more capacity to produce consumer goods in the future.
- There is a circular flow: firms pay incomes (wages, rent, interest, profit) to households for factor services; households use these incomes to buy goods and services from firms, enabling firms to sell their output.
Key Points: Circular Flow of Income and Methods of Calculating National Income
- Circular flow = unending flow of production → income → expenditure between sectors.
- In a two-sector economy (no govt., no foreign trade, no saving): firms pay factor incomes → households spend all income back on goods.
- National income can be measured equally by the product, income, or expenditure method - all three give the same result in the simplified model.
- Three phases: Production → Income → Expenditure.
- Real flow = physical movement of goods/factor services; Money flow = monetary payments for those goods/services.
- Leakages (savings, taxes, imports) withdraw from the flow; Injections (investment, govt. spending, exports) add to it.
- Four sectors in the full model: Households, Firms, Government, and Rest of the World.
Key Points: Output Method/Product Method
- Output Method counts value of all final goods and services produced to measure national income.
- Two approaches: Final Product Approach and Value Added Approach - both yield the same result.
- Value Added at each stage = Output value − Intermediate input value.
- GDP is the sum of Gross Value Added across all firms in the economy.
- Inventories (stock changes) are included in GVA to capture production not yet sold.
- The key precaution is to avoid double counting - count only final goods or use the value-added method.
- Second-hand goods, intermediate goods, and imports are excluded from the calculation.
Key Points: Expenditure Method
- Measures national income from the demand (expenditure) side of the economy.
- Based on the principle that National Income = National Expenditure.
- GDPMP = C + I + G + (X − M) is the basic expenditure equation.
- NNPFC = GDPMP − Depreciation − Net Indirect Taxes + NFIA gives National Income.
- Exports are added and imports are deducted to measure domestic production.
- Only final expenditure is included to avoid double counting.
- In India, national income is mainly estimated using a combination of the Output Method and Income Method, while the Expenditure Method is used less due to practical difficulties.
Key Points: Income Method
- Income Method measures National Income by adding all factor incomes earned during an accounting year.
- NDP at Factor Cost includes Compensation of Employees, Operating Surplus, and Mixed Income.
- National Income (NNPFC) is obtained by adding NFIA to NDPFC.
Formula: NNPFC = NDPFC + NFIA - Include only factor incomes. Exclude transfer payments, capital gains, windfall gains, second-hand goods, illegal income, gifts, and household services.
- Include imputed rent and undistributed profits. Avoid double counting.
- The main difficulties are mixed income, non-marketed production, imputed values, unreported income, and lack of data.
- Steps: Identify production units → Classify factor incomes → Calculate NDPFC → Add NFIA to get NNPFC.
Key Points: Factor Cost, Basic Prices and Market Prices
- Before 2015, India's principal measure was GDP at Factor Cost.
- Since the January 2015 revision, the CSO reports GVA at Basic Prices and GDP at Market Prices (simply called GDP).
- GVA = Total Output − Intermediate Consumption.
- Factor Cost includes only payments to factors of production.
- Basic Prices = Factor Cost + Net Production Taxes.
- Market Prices = Basic Prices + Net Product Taxes.
- Net Taxes = Taxes − Subsidies.
- Production taxes and product taxes are added at different stages to arrive at GDP at market prices.
Key Points: Some Macroeconomic Identities
- GDP measures domestic production; it does not equal what citizens earn.
- GNP = GDP + Net Factor Income from Abroad — adjusts for citizenship.
- NNP = GNP − Depreciation — accounts for wear and tear of capital.
- National Income = NNP at Market Prices − Net Indirect Taxes — strips out taxes and subsidies to arrive at factor cost.
- Personal Income requires deducting undistributed profits, corporate tax, net household interest payments, and adding transfer payments from National Income.
- Personal Disposable Income = Personal Income − Personal Tax − Non-Tax Payments — this is the actual income available to households.
Key Points: National Disposable Income
- National Disposable Income = NNP at Market Prices + Other Current Transfers from the Rest of the World.
- It represents the maximum income available to the domestic economy.
- "Other current transfers" include gifts, remittances, and aid from abroad.
- These transfers are received from the rest of the world and add to the domestic economy's spending capacity.
Key Points: Private Income
- Private income = income received by the private sector from all sources (factor incomes + transfer incomes).
- Derived from NNP at Factor Cost by deducting government income and adding transfer payments.
- Deduct: Government property/entrepreneurial income + savings of non-departmental government enterprises.
- Add: Interest on national debt + net current transfers from government + net current transfers from abroad.
- Three equivalent formulas — NCERT approach, NNP at FC approach, and C.S.O. approach — all yield the same result.
- Private income is a pre-tax measure; it does not equal personal income (further deductions are needed to arrive at personal income).
Key Points: National Income Aggregates
Key Points: Real GDP and Nominal GDP
- Nominal GDP is measured at current year prices - affected by both output and price changes.
- Real GDP is measured at base year prices - reflects output changes only; better growth indicator.
- Conversion: Real GDP = (Nominal GDP ÷ Price Index) × 100; base year index = 100.
- GDP Deflator = (Nominal GDP ÷ Real GDP) × 100; captures overall price level change since base year.
- CPI tracks a fixed consumer basket; includes imports; uses fixed weights.
- GDP Deflator covers all domestically produced goods; excludes imports; uses variable weights.
- Deflator of 150 → prices are 1.5× base-year levels; real output may not have grown proportionally.
Key Points: GDP and Welfare
- GDP is not a perfect measure of welfare.
- Welfare depends on how GDP is distributed, not just its size.
- A rise in GDP may benefit only a few people while the majority become worse off.
- Barter exchanges and unpaid domestic services are excluded from GDP, causing underestimation.
- Negative externalities (e.g., pollution) reduce welfare but are ignored by GDP, leading to overestimation of welfare.
- Positive externalities increase welfare but are also ignored by GDP, leading to underestimation of welfare.
Important Questions [24]
- Find Net Value Added at Factor Cost
- Explain the Precautions that Are Taken While Estimating Additional Income by Value Added Method.
- Answer the Following Question. What Precautions Should Be Taken While Estimating National Income by Value-added Method? Explain.
- Define the Following : Value Addition
- Complete the table: Producer Value of output Intermediate Consumption Value Added Farmer 2,000 - 2,000 Banker _(i)__ 2,000 2,000 Retail Seller 4,400 (iii) 400 Total _(ii)__ 6,000 _(iv)__
- An Economy is in Equilibrium. Find Investment Expenditure
- From the Data Given Below About an Economy, Calculate (A) Investment Expenditure and (B) Consumption Expenditure.
- Answer the Following Question. Define Net Exports. How is It Different from the Net Factor Income from Abroad?
- Government Insure Expenditure to Popularize Yoga Among the Masses. Analyses Its Impact on Gross Domestic Product and Welfare of the People.
- Given Normal Income, How Can We Find Real Income? Explain.
- Explain 'Non-monetary Exchanges' as a Limitation of Using the Gross Domestic Product as an Index of Welfare of a Country
- Distinguish between Factor Cost and Market Price.
- Distinguish between positive externalities and negative externalities.
- Assertion (A): Public goods are those goods and services that are collectively consumed by the public. Reason (R): Public goods are excludable and rivalrous in nature.
- Calculate National Income and Private Income :
- Find National Income and Private Income
- Government Spends on Child Immunization Programme. Analyse Its Impact on Gross Domestic Product and Welfare of the People.
- "Higher Gross Domestic Product (Gdp) Means Greater per Capita Availability of Goods in the Economy." Do You Agree with the Given Statement? Give Valid Reason in Support of Your Answer.
- If the Real Gdp is Rs400 and Nominal Gdp is Rs450, Calculate the Price Index (Base = 100).
- Define Externalities. Give an Example of Negative Externality. What is Its Impact on Welfare?
- "Gross Domestic Product (Gdp) Does Not Give Us a Clear Indication of Economic Welfare of a Country. "Defend Or Refute the Given Statement with Valid Reason
- Sale of Petrol and Diesel Cars is Rising Particularly in Big Cities. Analyse Its Impact on Gross Domestic Product and Welfare.
- Discuss briefly the concept of 'Externalities', with suitable example.
- "Many goods and services which may contribute to welfare, but are not included in estimating Gross Domestic Product (GDP)." Do you agree with the given statement? Give valid reason in support
Concepts [19]
- Macroeconomics Vs Microeconomics
- Representative Goods and Sectors
- Macroeconomic Agents and Government Role
- Emergence of Macroeconomics
- Context of the Present Book of Macroeconomics
- Meaning of Economic Wealth and Final Goods
- Stocks, Flows, and Depreciation
- Capital Formation, Trade-off & Circular Flow of Income
- Circular Flow of Income and Methods of Calculating National Income
- Output Method/Product Method
- Expenditure Method
- Income Method
- Factor Cost, Basic Prices and Market Prices
- Some Macroeconomic Identities
- National Disposable Income
- Private Income
- National Income Aggregates
- Real GDP and Nominal GDP
- GDP and Welfare
