Board Exam Session 2026-27

Tamil Nadu Board Class 12 Commerce Chapter Weightage 2026-27

Complete Board Exam Mark Distribution for TNBSE Class 12 Commerce Subjects

Accountancy • Business Studies • Economics • Mathematics/Statistics • Chapter-wise Marks • 80 Theory + 20 Internal

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4 Core Subjects 80 Theory Marks 20 Internal Marks 35% Passing Criteria

Chapter-wise Weightage for Commerce Board Exams 2026-27

Detailed mark distribution for each subject to help you prioritize your board exam preparation. Use this to plan your study schedule effectively.

Accountancy - Chapter Weightage (80 Marks)

Unit	Topics Covered	Marks	Weightage
Partnership Accounts	Profit and Loss Appropriation Account Partners' Capital and Current Accounts Admission, Retirement, Death of a Partner Dissolution of Partnership Firm	25	31.25%
Company Accounts	Share Capital - Issue, Forfeiture Debentures - Issue, Redemption Financial Statements of a Company Cash Flow Statement - Preparation	25	31.25%
Financial Statement Analysis	Comparative and Common Size Statements Ratio Analysis - Liquidity, Solvency, Profitability Cash Flow Statement - Operating, Investing, Financing	20	25%
Computerised Accounting	Computerised Accounting - Meaning, Features Accounting Software - Tally, ERP Systems Data Processing and Reporting	10	12.5%
Total		80	100%

Internal Assessment: 20 marks (Periodic Tests - 10, Notebook - 5, Practical/Project - 5)

Business Studies - Chapter Weightage (80 Marks)

Unit	Topics Covered	Marks	Weightage
Strategic Management	Strategic Management - Meaning, Process SWOT Analysis - Internal and External Strategic Planning and Corporate Strategy	18	22.5%
Financial Management	Capital Structure - Theories Investment Decisions - Capital Budgeting Dividend Decisions and Working Capital Management	16	20%
Marketing Management	Marketing Mix - Product, Price, Place, Promotion Consumer Behavior and Market Segmentation Digital Marketing - Social Media, SEO	14	17.5%
Entrepreneurship	Entrepreneurial Process - Identification, Development Business Plan - Contents, Importance Startup Ecosystem - Incubators, Accelerators	12	15%
Consumer Protection	Consumer Rights and Responsibilities Consumer Protection Act - Features Consumer Forums and Redressal Mechanism	10	12.5%
Total		80	100%

Internal Assessment: 20 marks (Periodic Tests - 10, Notebook - 5, Project/Case Studies - 5)

Economics - Chapter Weightage (80 Marks)

Unit	Topics Covered	Marks	Weightage
Macroeconomics	National Income - Concepts, Measurement Employment, Inflation - Types, Causes Money and Banking - Functions, RBI Monetary and Fiscal Policies	25	31.25%
Indian Economy	Indian Economy - Overview, Sectors Agriculture, Industrial, Service Sectors Economic Reforms - LPG Poverty and Inequality - Causes, Measures	20	25%
Economic Development	Human Development Index - Components Sustainable Development - Goals Environment and Economic Development Economy of Tamil Nadu	20	25%
International Trade	International Trade - Meaning, Theories Balance of Payments - Concepts Foreign Exchange - Exchange Rate WTO - Objectives, Functions	15	18.75%
Total		80	100%

Internal Assessment: 20 marks (Periodic Tests - 10, Notebook - 5, Project/Analysis - 5)

Mathematics - Chapter Weightage (80 Marks)

Unit	Topics Covered	Marks	Weightage
Calculus	Continuity and Differentiability Application of Derivatives - Maxima/Minima Integrals - Indefinite and Definite Application of Integrals - Area under Curves Differential Equations	25	31.25%
Vectors and 3D Geometry	Vectors - Algebra, Dot and Cross Product 3D Geometry - Lines, Planes Linear Programming - Graphical Method	15	18.75%
Probability	Conditional Probability, Bayes' Theorem Random Variables and Probability Distributions Mean and Variance of Probability Distributions	15	18.75%
Relations and Functions	Relations and Functions - Types, Composition Inverse Trigonometric Functions - Properties Matrices and Determinants - Operations	15	18.75%
Statistics	Measures of Central Tendency, Dispersion Correlation and Regression Analysis Index Numbers and Time Series	10	12.5%
Total		80	100%

Internal Assessment: 20 marks (Periodic Tests - 10, Notebook - 5, Subject Enrichment - 5)

Statistics - Chapter Weightage (80 Marks)

Unit	Topics Covered	Marks	Weightage
Probability	Probability Concepts Conditional Probability, Bayes' Theorem Probability Distributions - Binomial, Poisson, Normal	18	22.5%
Statistical Inference	Estimation and Hypothesis Testing Confidence Intervals - Construction Chi-Square Test - Applications ANOVA - Analysis of Variance	18	22.5%
Business Statistics	Index Numbers - Construction and Uses Time Series Analysis - Components Correlation and Regression Analysis Linear Programming - Graphical Method	24	30%
Data Analysis	Data Analysis - Descriptive, Inferential Data Visualization - Charts, Dashboards Business Analytics - Applications	20	25%
Total		80	100%

Internal Assessment: 20 marks (Periodic Tests - 10, Notebook - 5, Project/Data Analysis - 5)

Smart Board Exam Preparation Tips Based on Weightage

Focus on High-Weightage Topics

Prioritize units with higher marks like Partnership Accounts in Accountancy (25 marks), Macroeconomics in Economics (25 marks), and Strategic Management in Business Studies (18 marks).

Balance Subjects Effectively

Allocate study time proportionally to the weightage of each subject. Accountancy and Economics need more practice time.

Internal Assessment Matters

Don't ignore the 20 internal marks. Submit notebooks on time, participate in periodic tests, and complete practical work diligently.

Practice Professional Exam Questions

Solve CA Foundation/CS Foundation level questions from high-weightage chapters. This helps in both board exams and professional exams.

Frequently Asked Questions About Chapter Weightage

How is the chapter weightage useful for board exam preparation?

Chapter weightage helps students prioritize their study time effectively for board exams. By knowing which chapters carry more marks, you can allocate more time to high-weightage topics while still covering all units. This strategic approach ensures better board exam results with efficient preparation.

Does the chapter weightage change every year?

The chapter weightage is generally consistent year to year, but it's advisable to check the official TNBSE website for any updates. Minor changes may occur based on curriculum revisions.

What is the passing criteria for Class 12 Commerce board exams?

Students must secure a minimum of 35% marks in each subject to pass the board examination. This applies to both theory and internal assessment components combined. Failure in any subject requires supplementary examination.

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