ISC Class 12 Economics Important Topics 2027
Last updated:
Every topic ranked by how often and how recently it was asked in 4 board + 4 official sample papers (2023–2027). Teal tags = board papers, orange tags = official sample papers.
Top 10 most important topics
| # | Topic | Chapter | Asked in | Importance |
|---|---|---|---|---|
| 1 | Oligopoly: interdependence, indeterminate demand curve | Main Market Forms and Equilibrium of a Firm | Board 2023Board 2024Board 2025Board 2026Sample 2023Sample 2024Sample 2025Sample 2027 | ★★★★★ |
| 2 | Expenditure method and precautions | National Income | Board 2023Board 2024Board 2025Board 2026Sample 2023Sample 2024Sample 2025Sample 2027 | ★★★★☆ |
| 3 | Quantitative credit control: CRR, SLR, repo, reverse repo, bank rate, OMO | Money and Banking | Board 2023Board 2024Board 2025Board 2026Sample 2023Sample 2024Sample 2027 | ★★★★☆ |
| 4 | Total and marginal utility; Law of Diminishing Marginal Utility | Demand | Board 2023Board 2025Board 2026Sample 2023Sample 2024Sample 2025Sample 2027 | ★★★☆☆ |
| 5 | Income method and precautions | National Income | Board 2024Board 2026Sample 2023Sample 2024Sample 2025Sample 2027 | ★★★☆☆ |
| 6 | Indifference curve: meaning, properties, MRS and DMRS | Demand | Board 2024Board 2026Sample 2023Sample 2024Sample 2025Sample 2027 | ★★★☆☆ |
| 7 | Depreciation, appreciation, devaluation and revaluation | Balance of Payments and Exchange Rate | Board 2023Board 2024Board 2025Board 2026Sample 2024Sample 2025Sample 2027 | ★★★☆☆ |
| 8 | Perfect competition: features and price-taker firm | Main Market Forms and Equilibrium of a Firm | Board 2023Board 2024Board 2025Board 2026Sample 2023Sample 2025Sample 2027 | ★★★☆☆ |
| 9 | Monopolistic competition: product differentiation and selling costs | Main Market Forms and Equilibrium of a Firm | Board 2024Board 2025Board 2026Sample 2024Sample 2025Sample 2027 | ★★★☆☆ |
| 10 | Law of Variable Proportions: three stages | Concepts of Production | Board 2025Board 2026Sample 2023Sample 2024Sample 2025Sample 2027 | ★★★☆☆ |
Chapter-wise important topics
Demand · Microeconomics: Demand, Elasticity of Demand and Supply
| Total and marginal utility; Law of Diminishing Marginal Utility asked 9× | Board 2023Board 2025Board 2026Sample 2023Sample 2024Sample 2025Sample 2027 | ★★★☆☆ |
| Indifference curve: meaning, properties, MRS and DMRS asked 10× | Board 2024Board 2026Sample 2023Sample 2024Sample 2025Sample 2027 | ★★★☆☆ |
| Normal, inferior, substitute and complementary goods asked 8× | Board 2023Board 2024Board 2025Board 2026Sample 2024Sample 2025Sample 2027 | ★★★☆☆ |
| Consumer's equilibrium: one commodity and Law of Equimarginal Utility asked 7× | Board 2023Board 2025Board 2026Sample 2024Sample 2025 | ★★☆☆☆ |
| Budget line and consumer's equilibrium (ordinal approach) asked 7× | Board 2024Board 2025Board 2026Sample 2023Sample 2025 | ★★☆☆☆ |
| Law of Demand, demand schedule and reasons for downward slope asked 2× | Board 2026Sample 2025 | ★☆☆☆☆ |
| Exceptions to the Law of Demand (Giffen, Veblen goods) asked 2× | Board 2026Sample 2024 | ★☆☆☆☆ |
| Movement along vs shift of the demand curve asked 2× | Sample 2023 | ★☆☆☆☆ |
| Meaning, types and determinants of demand; demand function asked 1× | Board 2024 | ★☆☆☆☆ |
Elasticity of Demand · Microeconomics: Demand, Elasticity of Demand and Supply
| Percentage method numericals asked 7× | Board 2023Board 2024Board 2025Board 2026Sample 2023Sample 2024Sample 2025 | ★★☆☆☆ |
| Factors affecting price elasticity of demand asked 2× | Board 2023Sample 2027 | ★☆☆☆☆ |
| Meaning and degrees of price elasticity of demand asked 1× | Sample 2023 | ★☆☆☆☆ |
| Geometric (point) method asked 1× | Board 2024 | ★☆☆☆☆ |
| Total expenditure (outlay) method asked 1× | Board 2023 | ★☆☆☆☆ |
| Income and cross elasticity of demand asked 1× | Board 2023 | ★☆☆☆☆ |
Supply · Microeconomics: Demand, Elasticity of Demand and Supply
| Movement along vs shift of the supply curve asked 6× | Board 2024Board 2026Sample 2024Sample 2025Sample 2027 | ★★☆☆☆ |
| Elasticity of supply: degrees and measurement (percentage and geometric) asked 4× | Board 2023Board 2025Sample 2023Sample 2027 | ★☆☆☆☆ |
| Law of Supply, supply schedule and exceptions asked 4× | Board 2023Board 2025Sample 2027 | ★☆☆☆☆ |
| Determinants of supply and supply function asked 1× | Sample 2023 | ★☆☆☆☆ |
| Meaning of supply; stock vs supply asked 1× | Board 2024 | ★☆☆☆☆ |
Market Mechanism · Microeconomics: Market Mechanism, Production, Cost and Revenue
| Price ceiling (maximum price) and rationing asked 3× | Board 2023Board 2026Sample 2027 | ★☆☆☆☆ |
| Effect of shifts in demand and supply on equilibrium asked 3× | Board 2023Board 2024Sample 2027 | ★☆☆☆☆ |
| Simultaneous shifts in demand and supply asked 1× | Board 2025 | ★☆☆☆☆ |
| Price floor (minimum support price) asked 1× | Board 2024 | ★☆☆☆☆ |
Concepts of Production · Microeconomics: Market Mechanism, Production, Cost and Revenue
| Law of Variable Proportions: three stages asked 8× | Board 2025Board 2026Sample 2023Sample 2024Sample 2025Sample 2027 | ★★★☆☆ |
| Returns to scale vs returns to a factor asked 4× | Board 2023Sample 2025Sample 2027 | ★★☆☆☆ |
| Reasons for increasing and diminishing/negative returns to a factor asked 4× | Board 2025Board 2026Sample 2024Sample 2027 | ★☆☆☆☆ |
| Total, average and marginal physical product and their relationship asked 4× | Board 2023Board 2024Sample 2025 | ★☆☆☆☆ |
Cost and Revenue · Microeconomics: Market Mechanism, Production, Cost and Revenue
| Producer's equilibrium: MR-MC approach asked 5× | Board 2025Sample 2023Sample 2024Sample 2027 | ★★☆☆☆ |
| Average and marginal cost: relationship and U-shape asked 6× | Board 2023Board 2024Board 2025Sample 2023Sample 2024Sample 2025 | ★★☆☆☆ |
| Cost schedule numericals (TFC, TVC, AC, MC) asked 5× | Board 2023Board 2026Sample 2023Sample 2024Sample 2025 | ★★☆☆☆ |
| Revenue concepts: TR, AR, MR under perfect and imperfect competition asked 4× | Board 2024Board 2025Sample 2025Sample 2027 | ★☆☆☆☆ |
| Fixed, variable and total cost curves asked 3× | Board 2024Board 2025Sample 2027 | ★☆☆☆☆ |
| Opportunity cost and accounting cost asked 2× | Board 2023Board 2026 | ★☆☆☆☆ |
| Cost concepts: private, social, money, real, explicit, implicit, economic cost asked 1× | Board 2025 | ★☆☆☆☆ |
Main Market Forms and Equilibrium of a Firm · Microeconomics: Main Market Forms and Equilibrium of a Firm
| Oligopoly: interdependence, indeterminate demand curve asked 14× | Board 2023Board 2024Board 2025Board 2026Sample 2023Sample 2024Sample 2025Sample 2027 | ★★★★★ |
| Perfect competition: features and price-taker firm asked 9× | Board 2023Board 2024Board 2025Board 2026Sample 2023Sample 2025Sample 2027 | ★★★☆☆ |
| Monopolistic competition: product differentiation and selling costs asked 8× | Board 2024Board 2025Board 2026Sample 2024Sample 2025Sample 2027 | ★★★☆☆ |
| Short-run equilibrium of a competitive firm: supernormal profit, normal profit, loss asked 8× | Board 2023Board 2024Board 2026Sample 2023Sample 2024Sample 2027 | ★★☆☆☆ |
| Break-even point and shut-down point asked 7× | Board 2023Board 2025Board 2026Sample 2023Sample 2024Sample 2025Sample 2027 | ★★☆☆☆ |
| Demand (AR) curve under different market forms asked 7× | Board 2024Board 2025Board 2026Sample 2023Sample 2024Sample 2027 | ★★☆☆☆ |
| Monopoly: features and price discrimination asked 7× | Board 2023Board 2024Board 2026Sample 2023Sample 2024Sample 2027 | ★★☆☆☆ |
| Monopsony: meaning and features asked 4× | Board 2024Board 2025Board 2026Sample 2025 | ★☆☆☆☆ |
Theory of Income and Employment · Theory of Income and Employment
| Propensity to consume and save (APC, MPC, APS, MPS) asked 8× | Board 2023Board 2024Sample 2023Sample 2025Sample 2027 | ★★☆☆☆ |
| Investment multiplier: meaning, mechanism and numericals asked 7× | Board 2023Board 2024Board 2025Sample 2023Sample 2024Sample 2025Sample 2027 | ★★☆☆☆ |
| Deficient demand (deflationary gap) and its correction asked 6× | Board 2023Board 2025Sample 2024Sample 2025Sample 2027 | ★★☆☆☆ |
| Equilibrium level of income (AD = AS, S = I) asked 4× | Sample 2023Sample 2024Sample 2025Sample 2027 | ★★☆☆☆ |
| Excess demand (inflationary gap) and its correction asked 4× | Board 2024Board 2026Sample 2025 | ★☆☆☆☆ |
| Autonomous vs induced investment asked 4× | Board 2023Board 2024Board 2026Sample 2024 | ★☆☆☆☆ |
| Ex-ante and ex-post; aggregate demand and its components; aggregate supply asked 2× | Board 2023Board 2024 | ★☆☆☆☆ |
| Full employment and involuntary unemployment asked 1× | Sample 2024 | ★☆☆☆☆ |
Money and Banking · Money and Banking
| Quantitative credit control: CRR, SLR, repo, reverse repo, bank rate, OMO asked 11× | Board 2023Board 2024Board 2025Board 2026Sample 2023Sample 2024Sample 2027 | ★★★★☆ |
| Supply of money: M0, M1, M2, M3, M4 asked 6× | Board 2025Board 2026Sample 2025Sample 2027 | ★★☆☆☆ |
| Meaning, kinds and functions of money (primary, secondary, contingent) asked 7× | Board 2023Board 2026Sample 2024Sample 2027 | ★★☆☆☆ |
| Inflation: demand-pull and cost-push asked 5× | Board 2025Board 2026Sample 2023Sample 2025 | ★★☆☆☆ |
| Credit creation by commercial banks and its limitations asked 4× | Board 2025Sample 2023Sample 2024Sample 2027 | ★☆☆☆☆ |
| Qualitative (selective) credit control: margin requirement, moral suasion asked 3× | Board 2025Sample 2023Sample 2027 | ★☆☆☆☆ |
| Functions of the central bank asked 4× | Board 2023Board 2024Board 2026 | ★☆☆☆☆ |
| Functions of commercial banks asked 3× | Board 2023Board 2026Sample 2025 | ★☆☆☆☆ |
Balance of Payments and Exchange Rate · Balance of Payments and Exchange Rate
| Depreciation, appreciation, devaluation and revaluation asked 9× | Board 2023Board 2024Board 2025Board 2026Sample 2024Sample 2025Sample 2027 | ★★★☆☆ |
| Disequilibrium in BoP: causes and correction asked 9× | Board 2023Board 2024Board 2025Board 2026Sample 2023Sample 2024Sample 2025 | ★★★☆☆ |
| Balance of payments: meaning and components (current and capital account) asked 6× | Board 2024Board 2025Sample 2023Sample 2024Sample 2025 | ★★☆☆☆ |
| Foreign exchange rate: fixed and flexible asked 5× | Board 2023Board 2024Sample 2023Sample 2025Sample 2027 | ★★☆☆☆ |
| Classification of transactions in BoP accounts asked 4× | Board 2024Board 2025Board 2026Sample 2027 | ★☆☆☆☆ |
| Determination of exchange rate in a free market asked 3× | Board 2024Board 2025Sample 2023 | ★☆☆☆☆ |
Public Finance · Public Finance
| Revenue, fiscal and primary deficit: meaning and implications asked 7× | Board 2024Board 2025Sample 2024Sample 2025Sample 2027 | ★★★☆☆ |
| Taxes: direct and indirect, progressive and regressive asked 9× | Board 2023Board 2024Board 2025Board 2026Sample 2023Sample 2024Sample 2025 | ★★★☆☆ |
| Government budget: meaning, types and components (revenue and capital receipts) asked 5× | Board 2023Board 2024Board 2025Sample 2023Sample 2025 | ★☆☆☆☆ |
| Public debt: meaning and methods of redemption asked 4× | Board 2023Board 2026Sample 2023Sample 2027 | ★☆☆☆☆ |
| Public expenditure: revenue and capital; importance asked 3× | Board 2023Board 2026Sample 2027 | ★☆☆☆☆ |
| Fiscal policy: meaning and instruments asked 3× | Board 2024Sample 2024Sample 2025 | ★☆☆☆☆ |
| Deficit financing asked 1× | Sample 2027 | ★☆☆☆☆ |
National Income · National Income
| Expenditure method and precautions asked 13× | Board 2023Board 2024Board 2025Board 2026Sample 2023Sample 2024Sample 2025Sample 2027 | ★★★★☆ |
| Income method and precautions asked 9× | Board 2024Board 2026Sample 2023Sample 2024Sample 2025Sample 2027 | ★★★☆☆ |
| Items included/excluded in national income (transfer payments, intermediate goods) asked 8× | Board 2024Board 2025Board 2026Sample 2023Sample 2024Sample 2025Sample 2027 | ★★★☆☆ |
| Real vs nominal GDP; GDP and welfare asked 6× | Board 2023Board 2025Sample 2024Sample 2027 | ★★☆☆☆ |
| Circular flow of income: two, three and four sector models asked 5× | Board 2023Board 2024Board 2026Sample 2024 | ★☆☆☆☆ |
| Value-added (product) method and precautions asked 5× | Board 2023Board 2025Board 2026 | ★☆☆☆☆ |
| Private income, personal income, personal disposable income, NDI asked 3× | Board 2026Sample 2023Sample 2025 | ★☆☆☆☆ |
| National income aggregates: GDP, GNP, NDP, NNP at market price and factor cost asked 2× | Board 2025Sample 2023 | ★☆☆☆☆ |
Importance = how often a topic was asked × how recent, with extra weight for the latest official sample paper.