Key takeaways
- Government has three economic functions: allocation, distribution and stabilisation.
- Public goods are non-rival and non-excludable, so markets underprovide them and the government must supply them.
- The budget has a revenue account (no change in assets or liabilities) and a capital account (creates assets or liabilities).
- Fiscal deficit = total expenditure − (revenue receipts + non-debt capital receipts) = the government's total borrowing.
- Spending multiplier 1 ÷ (1 − c) is larger than the tax multiplier −c ÷ (1 − c); together they give a balanced budget multiplier of 1.
This page is part of the Introductory Macroeconomics chapter list for Class 12 Economics. It adds the government to the model of income determination.
IntroFunctions of Government and Public Goods
In a mixed economy the government performs three functions. Allocation means providing public goods that markets will not supply. Distribution means using taxes and transfers to make the income distribution fairer. Stabilisation means using spending and taxes to reduce unemployment in slumps and inflation in booms, because markets do not correct these quickly.
- Allocation function: goods like national defence, roads and public administration are provided by the government because markets will not provide enough of them.
- Distribution function: taxes and transfer payments change households' disposable income, making its distribution fairer.
- Stabilisation function: wages and prices do not fall easily, so unemployment can persist; and when spending exceeds available output, inflation follows. Policy raises or restrains demand accordingly.
Why public goods need the government
| Basis | Public goods | Private goods |
|---|---|---|
| Rivalry | Non-rival: one person's use does not reduce another's | Rival: what one consumes, another cannot |
| Excludability | Non-excludable: hard to stop non-payers from benefiting | Excludable: only buyers benefit |
| Market outcome | Free-rider problem; the market underprovides | Supplied through the market |
| Examples | Street lighting, national defence, a public park | Clothes, cars, food items |
Because people can enjoy a public good without paying, each person has an incentive to be a free rider. Fees cannot be collected, so private firms will not produce enough. The government provides such goods and pays for them through the budget. Public provision does not always mean public production: the government may pay private firms to build a road it then provides free.
5.1Components of the Government Budget
Article 112 of the Constitution requires the government to place an Annual Financial Statement, the budget, before Parliament each year. It is split into a revenue account, for receipts and spending that do not create assets or liabilities, and a capital account, for those that do. Deficits measure how far spending exceeds receipts.
The revenue account
Revenue receipts are receipts that cannot be reclaimed from the government and create no liability. Tax revenue includes direct taxes on income and wealth, such as personal income tax and corporation tax, and indirect taxes on goods and services, such as the GST, customs and excise duties. Non-tax revenue includes interest on loans given by the government, dividends and profits of public enterprises, grants, and fees and fines.
Revenue expenditure does not create physical or financial assets: salaries, pensions, interest payments, subsidies and grants to states. Within it, plan and non-plan spending were separated in earlier budgets; interest payments and defence are among the largest committed items.
The capital account
Capital receipts either create a liability or reduce an asset: borrowings from the public, the RBI or abroad; recovery of loans given earlier; and disinvestment, the sale of shares in public sector undertakings. Capital expenditure creates assets or reduces liabilities: building roads, buying machinery, giving loans and repaying debt.
Measures of government deficit
Fiscal deficit = Total expenditure − (Revenue receipts + Non-debt creating capital receipts)
Primary deficit = Fiscal deficit − Interest payments
A revenue deficit means the government is dissaving: it borrows to pay for consumption-type spending. The fiscal deficit equals the government's total borrowing from all sources (at home, from the RBI and from abroad), so it is the key measure. The primary deficit removes interest on past debt and shows how much the government is borrowing for its current needs alone.
5.2Fiscal Policy
Fiscal policy is the use of government spending, taxes and transfers to influence output and employment. Higher spending raises output by the full spending multiplier; a tax cut raises it by less, because part of the extra income is saved. Raising spending and taxes by the same amount still raises output by that amount.
With government in the model, autonomous spending includes G, and consumption depends on disposable income, Y − T + TR. Holding prices fixed as in Chapter 4, each policy tool has its own multiplier:
Changes in government expenditure
A rise in G is a direct addition to demand, so it works exactly like a rise in autonomous investment.
Changes in taxes and transfers
A tax cut raises disposable income, but consumers spend only the fraction c of it, so the first-round effect is smaller than with G. The tax multiplier is negative and, in absolute value, one less than the spending multiplier. If G and T rise by the same amount, the two effects add to exactly 1: output rises by the amount of extra spending.
Proportional taxes and automatic stabilisers: when tax is a fixed share t of income, the MPC out of total income falls to c(1 − t), and the multiplier becomes 1 ÷ [1 − c(1 − t)]. Such taxes act as automatic stabilisers: in a boom, tax collections rise and dampen spending; in a slump, they fall and cushion it. Welfare transfers work the same way. Deliberate changes in G or T to offset shocks are called discretionary fiscal policy.
Debt
Deficits are financed by borrowing, which adds to public debt. Borrowing today means taxes later to pay interest and repay principal, so debt can shift a burden onto future generations. Heavy government borrowing may also raise interest rates and crowd out private investment. Some economists argue, under Ricardian equivalence, that people save more today in anticipation of future taxes, so deficits change demand little. Deficits are less worrying when they finance productive investment that raises future output.
To keep borrowing in check, India passed the Fiscal Responsibility and Budget Management (FRBM) Act, 2003, whose rules took effect in July 2004. It set targets for reducing the fiscal and revenue deficits, restricted direct borrowing from the RBI, and required the government to present fiscal policy statements to Parliament with the budget.
Worked Examples
Example 1: Three measures of deficit
- Given
- (₹ crore) Tax revenue 25,000; non-tax revenue 5,000; revenue expenditure 36,000, of which interest payments 8,000; recovery of loans 600; disinvestment 1,400; capital expenditure 9,000.
- Formula
- RD = RE − RR; FD = TE − (RR + non-debt capital receipts); PD = FD − interest
- Steps
- RR = 30,000. RD = 36,000 − 30,000 = 6,000. TE = 36,000 + 9,000 = 45,000. Non-debt receipts = 600 + 1,400 = 2,000. FD = 45,000 − 32,000 = 13,000. PD = 13,000 − 8,000 = 5,000.
- Answer
- Revenue deficit ₹6,000 crore; fiscal deficit ₹13,000 crore (equal to borrowing); primary deficit ₹5,000 crore.
Example 2: Spending versus tax multiplier
- Given
- MPC = 0.75. Government spending rises by ₹80 crore; separately, taxes are cut by ₹80 crore.
- Formula
- ΔY = ΔG ÷ (1 − c); ΔY = −cΔT ÷ (1 − c)
- Steps
- Spending: 80 × 4 = 320. Tax cut: −0.75 × (−80) ÷ 0.25 = 240. Both together (G up 80, T up 80): 320 − 240 = 80.
- Answer
- ΔY = ₹320 crore from spending, ₹240 crore from the tax cut; a balanced rise of 80 in both raises Y by 80.
Common Mistakes
- Including borrowings in the receipts used to calculate the fiscal deficit. Only non-debt capital receipts are added.
- Treating recovery of loans as a revenue receipt. It reduces an asset, so it is a capital receipt.
- Writing that the tax multiplier is positive. A tax increase reduces income.
- Saying a zero primary deficit means no borrowing. The government still borrows to pay interest.
- Calling every government-provided good a public good. Non-rivalry and non-excludability decide it.
10 Important Questions for Class 12 Board and School Examinations
Questions are written in original words. Marks are shown beside each question.
Q1Which of the following is a capital receipt? (A) Income tax (B) Dividends from public enterprises (C) Borrowings from the public (D) Fees and fines 1 mark · MCQ
(C) Borrowings from the public. Borrowing creates a liability, which makes it a capital receipt.
Q2Assertion (A): The fiscal deficit shows the total borrowing requirement of the government. Reason (R): The fiscal deficit is financed by borrowing at home, from the RBI and from abroad. Choose: (a) both true, R explains A; (b) both true, R does not explain A; (c) A true, R false; (d) A false, R true. 1 mark · Assertion-reason
(a) Both are true and R correctly explains A. Whatever spending is not covered by revenue and non-debt receipts must be borrowed.
Q3Why must public goods be provided by the government? 3 marks
Because markets underprovide public goods, which are non-rival and non-excludable.
- Non-rival: many can use them at once without reducing others' use.
- Non-excludable: non-payers cannot easily be kept out.
- So people free-ride and private firms cannot collect enough payment.
Example: national defence protects every citizen, whether or not they pay.
Hence the government supplies them using tax revenue, and they benefit the whole community.
Q4Distinguish between revenue expenditure and capital expenditure. 3 marks
Revenue expenditure creates no assets and reduces no liabilities; capital expenditure does one of the two.
- Revenue expenditure: salaries, pensions, interest, subsidies.
- Capital expenditure: roads, machinery, loans given, debt repayment.
- Revenue expenditure is recurring; capital expenditure builds future capacity.
Example: paying teachers is revenue expenditure; building a school is capital expenditure.
The difference matters because capital spending adds to the economy’s future productive capacity.
Q5What does a primary deficit show? 3 marks
The primary deficit shows government borrowing for current needs, excluding interest on past debt.
- Primary deficit = fiscal deficit − interest payments.
- It separates new borrowing needs from the cost of old debt.
- A falling primary deficit means current finances are improving.
Example: FD of 13,000 with interest of 8,000 gives a PD of 5,000.
A primary surplus would show that revenue covers current spending apart from interest.
Q6Explain the allocation, distribution and stabilisation functions of the government budget. 4 marks
Through its budget the government provides public goods, redistributes income and steadies the economy.
- Allocation: it supplies goods such as defence and roads that markets underprovide.
- Distribution: taxes and transfers make disposable incomes fairer.
- Stabilisation: it raises demand in a slump and restrains it in a boom.
- Tools: all three work through receipts and expenditure in the budget.
Example: higher spending on rural roads during a slowdown serves allocation and stabilisation together.
Taxes on cigarettes, for example, are meant to curb a harmful product, whereas progressive income tax serves distribution.
Q7How do proportional income taxes act as automatic stabilisers? 4 marks
Proportional taxes reduce the swing in disposable income, so consumption moves less when GDP changes.
- Lower MPC out of income: it becomes c(1 − t).
- Smaller multiplier: 1 ÷ [1 − c(1 − t)].
- In a boom: tax collections rise, holding back spending.
- In a slump: tax collections fall, cushioning disposable income.
Example: with c = 0.8 and t = 0.25, the multiplier falls from 5 to 2.5.
Because the proportional tax cuts the effective share of extra income that is spent, the multiplier falls, and income swings are damped. These stabilisers work without any new decision by the government.
Q8Explain the revenue deficit, fiscal deficit and primary deficit. What does each indicate? 6 marks
The three deficits measure different gaps between government spending and receipts.
| Deficit | Formula | Indicates |
|---|---|---|
| Revenue | RE − RR | Dissaving: borrowing for consumption-type spending |
| Fiscal | TE − (RR + non-debt capital receipts) | Total borrowing requirement |
| Primary | FD − interest payments | Borrowing for current needs, excluding past debt |
A high revenue deficit is the most worrying, since borrowed money is not creating assets.
The revenue deficit is the excess of revenue expenditure over revenue receipts; the fiscal deficit equals the government’s borrowing in the year; and the primary deficit is the fiscal deficit less interest payments. A large revenue deficit means borrowing to meet current spending instead of building assets, and a large fiscal deficit raises debt and the interest burden.
Q9Compare the government expenditure multiplier and the tax multiplier, and derive the balanced budget multiplier. 6 marks
The spending multiplier is 1 ÷ (1 − c) and the tax multiplier is −c ÷ (1 − c), so a balanced change in both has a multiplier of 1.
- A rise in G adds directly to demand in the first round.
- A tax change works only through consumption, scaled by c.
- So the tax multiplier is smaller in absolute value by exactly 1.
- Balanced budget: ΔG = ΔT.
- ΔY = ΔG[1 ÷ (1 − c)] − ΔT[c ÷ (1 − c)] = ΔG(1 − c) ÷ (1 − c) = ΔG.
Thus a spending rise matched by an equal tax rise raises output by the same amount.
For example, with c = 0.8 the spending multiplier is 5 and the tax multiplier is −4, so a balanced rise of 100 in both raises output by 500 − 400 = 100.
Q10In an economy, C = 50 + 0.8Yd, I = 100, G = 120 and lump-sum taxes T = 100. Find equilibrium income, the government spending multiplier and the tax multiplier. 4 marks · Numerical
Equilibrium income is 950; the spending multiplier is 5 and the tax multiplier is −4.
Given: C = 50; c = 0.8; I = 100; G = 120; T = 100.
Formula: Y = [C − cT + I + G] ÷ (1 − c).
Steps: Y = (50 − 80 + 100 + 120) ÷ 0.2 = 190 ÷ 0.2 = 950. Spending multiplier = 1 ÷ 0.2 = 5. Tax multiplier = −0.8 ÷ 0.2 = −4.
Final answer: Y* = 950; spending multiplier = 5; tax multiplier = −4.
10 Points for State PSC and UPSC Aspirants
- The budget is the Annual Financial Statement under Article 112; the Consolidated Fund (Article 266) and Contingency Fund (Article 267) frame government accounts.Why it matters: constitutional basis of the budget.Source: Union Budget, Ministry of Finance
- Union Budget 2026-27 estimates the fiscal deficit at 4.3% of GDP; the revised estimate for 2025-26 is 4.4%.Why it matters: the latest headline fiscal number (refresh after each Budget).Source: Budget 2026-27 speech, 1 February 2026
- The Centre now anchors policy on debt: central government debt is estimated at 55.6% of GDP in 2026-27 (56.1% in 2025-26 RE), with a target of 50±1% by 2030-31.Why it matters: the shift from deficit targets to a debt anchor.Source: Budget 2026-27 speech, 1 February 2026
- The FRBM Act, 2003 (rules effective July 2004) set deficit targets and barred routine borrowing from the RBI; it was later amended to add debt targets.Why it matters: the legal basis of fiscal consolidation.Source: NCERT Introductory Macroeconomics; Union Budget documents
- The 16th Finance Commission submitted its report on 17 November 2025; the government kept the states' share of divisible taxes at 41%.Why it matters: Centre–state fiscal relations (Article 280).Source: Budget 2026-27 speech; Finance Commission of India
- The Goods and Services Tax began on 1 July 2017; the GST Council is set up under Article 279A.Why it matters: the biggest change in indirect taxes.Source: GST Council
- Union Budget 2026-27 proposed public capital expenditure of ₹12.2 lakh crore, up from ₹2 lakh crore in FY2014-15.Why it matters: capital spending is the most productive use of a deficit.Source: Budget 2026-27 speech, 1 February 2026
- A gender budget statement has been part of the Union Budget since 2005-06.Why it matters: a recurring prelims fact.Source: NCERT Introductory Macroeconomics
- Effective revenue deficit excludes from the revenue deficit grants given for creating capital assets.Why it matters: a refined measure used in Indian budget documents.Source: Union Budget documents
- India stopped showing the old “budget deficit” from 1997-98; the fiscal deficit is now the main measure.Why it matters: explains why textbooks centre the fiscal deficit.Source: NCERT Introductory Macroeconomics
These are revision notes, not official predictions of exam content.
Quick Revision
- Functions: allocation, distribution, stabilisation.
- Public goods: non-rival, non-excludable, free riders.
- Revenue account: no asset or liability created.
- Capital receipts: borrowings, loan recovery, disinvestment.
- RD = RE − RR; FD = TE − (RR + non-debt CR); PD = FD − interest.
- ΔY/ΔG = 1/(1 − c); ΔY/ΔT = −c/(1 − c).
- Balanced budget multiplier = 1; transfers = c/(1 − c).
- Proportional tax: multiplier 1/[1 − c(1 − t)]; FRBM Act 2003.
Related Glossary Terms and Chapters
Glossary:
Fiscal deficit Multiplier Revenue deficit Public goods
Related chapters: Income Determination, the base model; Money and Banking, for borrowing from the RBI and SLR. From Class 11: Liberalisation, Privatisation and Globalisation, Poverty.
Sources
- NCERT textbooks: Introductory Macroeconomics, Class 12, National Council of Educational Research and Training. Syllabus reference. Accessed 23 October 2026.
- Budget 2026-2027: Speech of the Minister of Finance (PDF), Ministry of Finance, 1 February 2026. Accessed 23 October 2026.
- Union Budget documents, Ministry of Finance, Government of India. Accessed 23 October 2026.
- Finance Commission of India. Accessed 23 October 2026.
- GST Council, Government of India. Accessed 23 October 2026.
- India Code: Fiscal Responsibility and Budget Management Act, 2003, Legislative Department. Accessed 23 October 2026.
About this page
Drafted with AI assistance from the NCERT chapter structure, in original words. Content is checked and approved by Dr. Anamika Shrivastava, PhD Economics, before publication. Read how this site works or send a correction.
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