UPSC CSE Prelims 2026: Syllabus, Exam Pattern & Weightage Guide

The UPSC Syllabus 2026 marks the foundational step for aspirants aiming to join prestigious services like the IAS, IPS, IFS, and IRS through the Union Public Service Commission (UPSC) Civil Services Examination (CSE). The selection process comprises three rigorous stages: the Preliminary Examination, the Main Examination, and the Personality Test (Interview). Scheduled for May 2026, the UPSC CSE Prelims Exam 2026 serves as a crucial screening test. Aspirants can also review the UPSC Prelims Admit Card 2026 Released - Download Now to ensure their documentation is ready ahead of time.

UPSC Prelims Exam Pattern 2026

The preliminary examination consists of two objective-type papers conducted on the same day in separate shifts. General Studies (Paper I) is scheduled for the morning shift, while the Civil Services Aptitude Test (CSAT - Paper II) takes place in the afternoon session. Both papers are conducted in English and Hindi.

While the scores from the UPSC Prelims 2026 are not included in the final merit list, clearing this threshold is mandatory to qualify for the Main Examination. For a detailed breakdown, check out the UPSC Exam Pattern 2026 [Prelims + Mains] - View Details.

Marking Scheme and Penalty Rules

Understanding the marking scheme helps in strategizing attempts during the exam:

• General Studies (Paper I): Each correct answer carries 2 marks, with a negative marking of 0.66 marks deducted for every incorrect response.
• CSAT (Paper II): Each correct answer is awarded 2.5 marks, with a deduction of 0.833 marks for each incorrect answer.
• Unanswered Questions: Unanswered questions do not attract any penalty.
• Qualifying Nature: Paper II (CSAT) is strictly qualifying in nature, requiring a minimum score of 33% to pass.

UPSC Prelims Paper 1 (GS) Marks Distribution and Weightage

General Studies (GS) Paper I Core Subject Areas

• Current Affairs of national and international significance
• History of India and the Indian National Movement
• Indian and World Geography: Covering Physical, Social, and Economic aspects
• Indian Polity and Governance: The Constitution, Political System, Panchayati Raj, Public Policy, and Rights issues (including topics related to Fundamental Rights and Fundamental Duties)
• Economic and Social Development: Sustainable Development, Poverty, Inclusion, Demographics, and Social Sector Initiatives
• General issues on Environmental Ecology, Biodiversity, and Climate Change
• General Science

History Sub-topics

• Ancient History (Pre-Historic Times, Indus Valley Civilization, Rig Vedic Period, Later Vedic Period, Jainism, Buddhism, Mahajanpadas, Mauryan Period, Post-Mauryan Period, Gupta Period, Harshwardhana Period, Sangam Period)
• Medieval History (Major Dynasties of Early Medieval India, Cholas and South-Indian Kingdoms, Early Muslim Invasions, The Delhi Sultanate, Afghans, Rajputs & Mughals, Establishment of North-Indian Empire, The Mughal Empire, Marathas and the Other Indian States, The decline of the Mughal Empire, Vijaynagar Empire)
• Modern History (Advent of Europeans, British Expansion, Administration before 1857, Economic Policies of the British, Impact of British Administration, Revolt of 1857, Administrative Changes after 1857, Development of Civil Services, Development of Education, Development of Press, Socio-Religious Reforms, Peasant Movements, Revolutionary Nationalism, Indian National Movement I, II, III, Governors-General and Viceroys of India, Constitutional Development of Indian)

Geography Sub-topics

• General Geography (Universe, Earth Evolution)
• Geomorphology (Earth’s Interior, Geology and Rock System, Geomorphic Process, Earthquakes and Volcanism, Distribution of Continents and Oceans, Landforms and their evolution, Landforms across the world)
• Oceanography (Hydrosphere, Submarine Relief Features, Temperature and Salinity, Waves, Oceans, Currents, Tides, Marine Resources, Ocean, Deposits and Corals)
• Climatology (Atmosphere, Inversion of Temperature, Insolation and Heat Budget, Air Mass, Fronts, Cyclones and Jet Streams, Wind and Pressure Belts, Precipitation, Climate Zones of the World)
• Biogeography (Soil Characteristics, Vegetation Resources)
• Human and Economic Geography (Demography and Census, Human Development, Economic Activities, Transport and Communication, International Trade, Settlement)
• Indian Geography (Physiography of India, Drainage System, Climate, Soils in India, Natural Vegetation, Population, Settlements and Urbanization, Land Resource, Mineral Resource, Energy Resource, Agriculture and Basic Terminology, Recent development in agriculture, Productivity of Crops, Industry, Transport, Recent developments in Industry and Transport)
• World Regional Geography (Continents, Countries, and Cities, Location in News)
• Ecology & Environment (Origin of Life Forms, Basic Concepts of Ecology, Ecosystem Functions, Population Ecology, Adaptation of Species and Interactions, Terrestrial Ecosystem, Aquatic Ecosystem, Nutrient Cycling)
• Biodiversity (Basics of Bio-Diversity, Animal and Plant Diversity, Threats to Biodiversity, Biodiversity Conservation, Estuaries, Mangroves, Coral Reliefs, Wetlands, Resource Degradation and Management, Environmental Pollution, Climate Change, Environmental Governance)

Art & Culture Sub-topics

• Architecture
• Sculpture
• Paintings
• Pottery Tradition
• Numismatics
• Performing Arts
• Religion and Literature
• National and Regional Festivals

Polity Sub-topics

• Evolution of the Consitution
• Salient Features of Indian Constitution
• Union & Its Territory
• Citizenship
• Fundamental Rights
• Directive Principles of State Policy
• Fundamental Duties
• System of Governance
• Union Executive
• Union Legislature
• State Executive
• State Legislature
• Local Government
• UT and Special Areas
• Judiciary
• Constitutional & Non-Constitutional Bodies
• Political Dynamics (Political Parties, Election, Pressure Groups)
• Governance
• International Relations

Economy Sub-topics

• Basic Economic Concepts (Macroeconomic Concepts, Microeconomic Concepts)
• Economic Measurements (National Income & Its Calculation, Economic Growth and Development, Inflation)
• Money & Banking (Money Function & Classification, Financial Markets & Its Instruments, Banking Structure in India)
• Public Finance in India (Budgeting, Fiscal Policy, Centre-state Distribution, Tax Structure in India)
• Planning (Meaning, Objective & History, Planning Institutions, Five Year Plans in India, NITI Aayog)
• Open Economy (Foreign Trade Concepts, International Organizations, Trade Agreements, Recent Development)
• Economic Sectors (Poverty, Employment and Unemployment, Government Schemes and Programmes)

General Science Sub-topics

• Science & Technology in India
• Space
• IT and Communication
• Materials, Nano Technology and Robotics
• Defence
• Nuclear Technology
• Intellectual Property Rights and Other Miscellaneous Issues
• Biotechnology

CSAT Core Competencies

• Reading Comprehension
• Interpersonal and Communication Skills
• Logical Reasoning and Analytical Ability
• Decision-making and Problem-solving
• General Mental Ability
• Basic Numeracy (Class X level), including Data Interpretation, Graphs, Charts, and Data Sufficiency

Official Syllabus Reference

For further offline reference and detailed sub-headings, candidates can download the official document via the UPSC Prelims Syllabus 2026 PDF.