Mod 2: Measuring National Income — Product, Income & Expenditure Methods; Personal & Disposable Income

📖 Chapter 2 🧩 Module 2 of 16 ⏱️ ~6 min read 💡 20 MCQs

Topic Part 1 of 2

Concept

2.1 Three methods: value added, income and expenditure

🏫 School level · NCERT Class 9–12 (the base for UPSC, BPSC, SSC and Bank exams)

Output = income = expenditure

Because output, income and expenditure are three views of the same circular flow, national income can be measured in three ways. NCERT Class 12 calls them the product (value added) method, the income method and the expenditure method. In theory all three give the same total; differences in practice are statistical discrepancies.

Table 2.1 The three methods
Method	What is added	Watch out
Product / value added	Value of output − intermediate consumption, for every producing unit (primary, secondary, tertiary)	Add value added, not sales, to avoid double counting; include own-account production
Income	Compensation of employees + operating surplus (rent, interest, profit) + mixed income of the self-employed	Exclude transfers, capital gains, sale of old assets, illegal income
Expenditure	Private final consumption + government final consumption + gross capital formation + net exports	Only final expenditure; exclude intermediate purchases, transfers and second-hand goods

Fig 2.1 Adding value added at each stage gives the value of the final good.

🇮🇳 How India uses the methods

The NSO uses a combination. The production (value added) approach is used mainly for commodity-producing sectors such as agriculture, mining and manufacturing; the income approach mainly for services such as trade, transport, banking and public administration; and expenditure estimates are built separately to cross-check GDP. That is why the published tables carry a line called “discrepancies”.

Worked example

A firm’s output is ₹500 crore, it buys raw materials worth ₹200 crore, and depreciation is ₹30 crore. Find GVA and NVA at market price.

GVA_MP = output − intermediate consumption = 500 − 200 = ₹300 crore.
NVA_MP = GVA_MP − depreciation = 300 − 30 = ₹270 crore.

GVA ₹300 crore; NVA ₹270 crore

⭐ Key Points for Exams

Product (value added), income and expenditure methods give the same total.
Value added = output − intermediate consumption.
Income method = compensation of employees + operating surplus + mixed income.
Expenditure = PFCE + GFCE + GCF + (X − M).

📌 Quick-Fire One-Liners

Which method adds value added? Answer: Product (value added) method
Is “diminishing cost method” a GDP method? Answer: No

Topic

Questions

MCQs

Answer this question, then use Next.

Which total equals the money value of final output?

Explanation: Value added across stages equals final sales. Adding every sale double-counts, and tonnes cannot be added to services.

Which purchase is an intermediate good in the NCERT Class 12 sense?

Explanation: Flour used up this year inside bread is intermediate. Bread, the oven and the truck are final goods.

Which is a method of estimating GDP?

Explanation: Expenditure is one of the three national-accounts approaches. The others named here are accounting techniques, not GDP methods.

Which item belongs in the income method of NCERT Class 12?

Explanation: Only payment for current factor service enters the income method. Transfers and the resale of an old asset do not.

[School] Gross value added by a firm is:

Value added is what the firm adds to the inputs it buys from other firms. Summing value added across firms gives GDP without double counting.

[Numerical] Output ₹500 cr, intermediate consumption ₹200 cr, depreciation ₹30 cr. Net value added at market price is:

GVA = 500 − 200 = 300; NVA = 300 − 30 = ₹270 crore. ₹300 crore is gross value added.

[School] Which of the following is a component of national income by the income method?

Income method = compensation of employees + operating surplus + mixed income (a farmer or shopkeeper using own labour and capital). Pensions are transfers; capital gains and lottery winnings are not payments for current production.

[School] Which is NOT a component of GDP by the expenditure method?

Raw materials are intermediate purchases; counting them would double count. The expenditure method adds only final spending: C + G + I + (X − M).

[SSC pattern] In India, the income method of estimating national income is used mainly for:

Goods-producing sectors (agriculture, mining, manufacturing) are measured mainly by the production (value added) approach; services are measured mainly through incomes.

Question 1 of 9

One-liners

Write your answer, then submit to see the correct answer.

Which method adds value added?

Product (value added) method

Is “diminishing cost method” a GDP method?

Question 1 of 2

Topic Part 1 of 2

Concept

2.2 Personal income, disposable income and the problems of measurement

🏫 School level · NCERT Class 9–12 (the base for UPSC, BPSC, SSC and Bank exams)

From what factors earn to what families can spend

National income is earned by factors, but not all of it reaches households, and households also receive income that is not earned in production. Two more measures track what families actually get and can spend.

Personal income (PI)

NI − undistributed profits − corporate tax − social security contributions + transfer payments

Personal disposable income (PDI)

PI − personal (direct) taxes − non-tax payments (fees, fines)

Use of PDI

PDI = Consumption + Saving

Per capita income

National income ÷ population

India: per capita NNI ₹2,08,090 in FY 2025-26 at current prices (NSO, June 2026)

Worked example

Personal income is ₹1,200 crore, personal income taxes are ₹150 crore and fees and fines are ₹50 crore. Households save ₹200 crore. Find PDI and consumption.

PDI = 1,200 − 150 − 50 = ₹1,000 crore.
Consumption = PDI − saving = 1,000 − 200 = ₹800 crore.

PDI ₹1,000 crore; consumption ₹800 crore

⚠️ Difficulties in estimating national income in India

A large unorganised (informal) sector that keeps no regular accounts of output or incomes.
Non-monetised transactions: farm output kept for self-consumption, barter in villages.
Many people have more than one occupation (a farmer who also drives a tractor for hire), so incomes are hard to classify.
Illiteracy, poor record keeping and the parallel (black) economy.
Unpaid work of homemakers is not valued at all.

⭐ Key Points for Exams

PI = NI − undistributed profits − corporate tax − social security contributions + transfers.
PDI = PI − personal taxes − non-tax payments = C + S.
Biggest measurement problem in India: the unorganised sector.

📌 Quick-Fire One-Liners

PDI equals? Answer: Consumption + saving
Is unemployment allowance part of national income? Answer: No, it is a transfer

Topic

Questions

MCQs

Answer this question, then use Next.

Question 14: Personal Disposable Income (PDI) is: [Chhattisgarh P.C.S. (Pre) 2023]

Explanation: PDI is the net income remaining with households after deducting personal taxes and non-tax administrative dues.

Personal income is ₹1,000, personal taxes ₹80 and non-tax payments ₹20. The household saves ₹100. Consumption is:

Explanation: PDI = 1,000 − 80 − 20 = 900. Consumption = PDI − saving = 800.

Which difficulty is statistical rather than a description of performance?

Explanation: Missing accounts block measurement. Inflation, underemployment and the deficit are economic outcomes.

Question: Which of the following is excluded from National Income calculations?

Explanation: Unemployment allowance is a transfer payment with no current productive output, so it is excluded from national accounts.

[Numerical] Personal income ₹1,200 cr, personal income tax ₹150 cr, fees and fines ₹50 cr. Personal disposable income is:

PDI = PI − personal taxes − non-tax payments = 1,200 − 150 − 50 = ₹1,000 crore. ₹1,050 crore forgets the non-tax payments.

[Bank PO pattern] To move from national income to personal income, which of the following is ADDED?

Households receive transfers (pensions, scholarships) though they are not part of national income, so they are added. Corporate tax, undistributed profits and social security contributions are earned but do not reach households, so they are subtracted.

[UPSC level] A farmer keeps part of his wheat for his family’s own consumption. In national income accounting this output is:

Production for self-consumption is real output, so national accounts impute a value to it. Estimating it is one of the main practical difficulties in a country with many small farms (the non-monetised sector).

[RBI Grade B level] “Compensation of employees” in national accounts includes:

It covers wages and salaries in cash and kind plus employers’ social security contributions (e.g. provident fund). Profit is operating surplus; pensions are transfers.

[School] Personal disposable income is divided between:

After taxes and non-tax payments, households either spend (consumption) or keep (saving) their income: PDI = C + S.

Question 1 of 9

One-liners

Write your answer, then submit to see the correct answer.

PDI equals?

Consumption + saving

Is unemployment allowance part of national income?

No, it is a transfer

Question 1 of 2

Topic Part 1 of 2

Concept

🎯 Competitive Level (UPSC Pre · BPSC Pre · State PSC · SSC · Bank PO · RBI Grade B): Methods and personal income in past papers

Exam map
Exam	What it asks from this module
UPSC Prelims	which items are excluded; meaning of each method
BPSC / State PSC	methods of GDP (66th BPSC 2020); problems of NI estimation (63rd BPSC 2017); PDI formula (CGPSC 2023)
SSC / Railways	value added, transfer payments
Bank PO / RBI Grade B	PI and PDI numericals; components of the income and expenditure sides

🏆 Previous Year Question · 63rd BPSC (Pre) 2017

63rd BPSC (Pre) 2017

One of the problems in calculating National Income in India is: (a) underemployment (b) inflation (c) low level of savings (d) non-organized sector (e) None of the above / More than one of the above

A measurement problem is one that stops us from counting output correctly.
Underemployment, inflation and low saving are features of the economy, not obstacles to counting it.
The non-organised sector keeps no accounts, so its output must be estimated indirectly.

(d) non-organized sector

🏦 Bank PO / RBI Grade B angle

In India’s expenditure-side GDP, private final consumption expenditure (PFCE) is the largest component (well over half of GDP), followed by gross fixed capital formation; government final consumption is around a tenth. RBI policy statements read growth through these components: “private consumption and investment” driving GDP.

⭐ Key Points for Exams

66th BPSC 2020: diminishing cost method is not a GDP method.
63rd BPSC 2017: the non-organised sector is a measurement problem.

📌 Quick-Fire One-Liners

Largest expenditure component of India’s GDP? Answer: Private final consumption expenditure

Topic

Questions

MCQs

Answer this question, then use Next.

Question 9: Which of the following is not a method to calculate the Gross Domestic Product (GDP)? [66th B.P.S.C. (Pre) (Re-Exam) 2020]

Explanation: The three macroeconomic approaches to measuring GDP are the Product method, Income method, and Expenditure method. Diminishing cost method is a cost accounting concept and is never used to compute GDP.

Question 12: One of the problems in calculating National Income in India is: [63rd B.P.S.C. (Pre) 2017]

Explanation: The non-organized sector lacks proper records of production, workers, and factor incomes, creating the primary bottleneck in compiling accurate accounts.

Question 1 of 2

One-liners

Write your answer, then submit to see the correct answer.

Largest expenditure component of India’s GDP?

Private final consumption expenditure

Question 1 of 1