UPSC CSE Syllabus — Mapped to Notes

The complete UPSC Civil Services Examination syllabus and pattern — Prelims GS Paper I, CSAT and Mains GS Papers I–IV — with every syllabus area linked to its notes.

By 3 min read Updated Oct 2026

Every page on UPSC Notes starts from a line of the official syllabus. This page is the map: the exam’s structure, then each paper’s syllabus with links to the notes that cover it. Always confirm against the latest official notification on upsc.gov.in.

Exam Structure

The Civil Services Examination has three stages.

StagePapersMarksCounted for merit?
Preliminary (objective)GS Paper I200Screening only
GS Paper II (CSAT)200Qualifying at 33%
Main (descriptive)Paper A — Indian language300Qualifying (25%)
Paper B — English300Qualifying (25%)
Essay250Yes
GS Papers I–IV250 eachYes
Optional Papers I–II250 eachYes
Personality Test (interview)—275Yes

The final merit list is out of 2,025 marks (1,750 written + 275 interview). Prelims marks only decide who goes on to Mains. Both Prelims papers are two hours long and carry negative marking of one-third of the marks for a question.

Prelims — GS Paper I

Syllabus areaNotes
Current events of national and international importanceCurrent Affairs
History of India and the Indian National MovementHistory & Culture
Indian and World Geography — physical, social, economic geography of India and the worldGeography
Indian Polity and Governance — Constitution, political system, Panchayati Raj, public policy, rights issuesPolity & Governance
Economic and Social Development — sustainable development, poverty, inclusion, demographics, social-sector initiativesIndian Economy, Indian Society
General issues on environmental ecology, biodiversity and climate changeEnvironment & Ecology
General ScienceScience & Technology

Prelims — GS Paper II (CSAT)

Comprehension; interpersonal skills including communication skills; logical reasoning and analytical ability; decision making and problem solving; general mental ability; basic numeracy and data interpretation (Class X level). All of it lives in CSAT.

Mains — GS Paper I

Indian Heritage and Culture, History and Geography of the World and Society.

  • Indian culture, art forms, literature and architecture; modern Indian history; the freedom struggle; post-independence consolidation; world history → History & Culture
  • Salient features of Indian society; women; population; poverty; urbanisation; globalisation; social empowerment; communalism, regionalism and secularism → Indian Society
  • World physical geography; distribution of natural resources; location of industries; geophysical phenomena → Geography

Mains — GS Paper II

Governance, Constitution, Polity, Social Justice and International Relations.

  • Constitution, federalism, separation of powers, Parliament, executive, judiciary, constitutional and statutory bodies, governance, welfare schemes and social justice → Polity & Governance
  • India and its neighbourhood, groupings and agreements, diaspora, international institutions → International Relations

Mains — GS Paper III

Technology, Economic Development, Bio-diversity, Environment, Security and Disaster Management.

Mains — GS Paper IV

Ethics, Integrity and Aptitude — ethics and human interface, attitude, aptitude, emotional intelligence, moral thinkers, public service values, probity in governance, and case studies → Ethics, Integrity & Aptitude

Where to Start

Follow the week-by-week study plan, take the Daily Challenge every day, and test yourself with mock tests.

Advertisement