UPSC CSE Syllabus 2026 — Prelims + Mains + Interview Topic-wise Pattern

UPSC CSE Syllabus 2026 — Prelims + Mains + Interview Topic-wise Pattern — Highlights

Eligibility & Age Limit

Age Limit: 21–32 years as on 1 August of the cycle year (1 August 2026 for CSE 2026)

OBC: 3 (max 35) · SC/ST: 5 (max 37) · PwBD: 10 (max 42 UR, 45 OBC, 47 SC/ST) · Ex-Servicemen: 5 post-service · J&K domicile during 1980-89: 5 · Disabled defence officers: 3.

Educational Qualification:

• All services: Bachelor's degree in any discipline from a recognised university. Final-year students may apply provisionally; degree must be completed before the Mains stage. Equivalent foreign qualifications need certification.
• IFS forester / IES engineering posts: Specific science / engineering degrees as per the parent service rules — but the CSE itself accepts any graduate.

Nationality: IAS + IPS: Indian citizen only. Other services: Indian citizen OR subject of Nepal / Bhutan / Tibetan refugee pre-1962 / Indian-origin migrant from listed countries (Schedule II of CSE Rules).

How to Apply Online

1. Visit the official portal of UPSC (linked in Important Links below).
2. Register with a valid email and mobile number to generate login credentials.
3. Fill the application form with personal, educational, and contact details exactly as on official documents.
4. Upload a recent passport-size photograph and signature in the prescribed format and size.
5. Pay the application fee through the prescribed payment mode (see Application Fee table above).
6. Review all entries carefully, then submit the form.
7. Download and print a copy of the submitted application for your records.

Resultpedia is independent and not affiliated with Union Public Service Commission. The official application link is in the Important Links section at the bottom of this page — verify all details on the official portal before applying.

UPSC CSE Syllabus 2026 — Prelims + Mains + Interview Topic-wise Pattern — Analysis & Trends

The 3 stages at a glance

Final merit out of 2,025 marks (Mains 1,750 + Interview 275). Approximately 0.2% of applicants reach the final list (~933 selected from 8-10 lakh applicants annually).

Prelims — Exam pattern

Negative marking -1/3 per wrong answer in both papers. CSAT marks do not count toward Prelims merit ranking — only the 33% pass gate. Prelims is qualifying overall: marks here are not carried into the final merit. Approximately 13× the vacancies are shortlisted for Mains based on GS Paper 1 marks per category.

Prelims — Syllabus

Paper 1 — General Studies (200 marks)

Seven core areas:

• Current Affairs: National + international importance · last 12 months window
• History of India + Indian National Movement: Ancient · Medieval · Modern · Freedom Struggle
• Indian + World Geography: Physical · Social · Economic · Map-based questions
• Indian Polity + Governance: Constitution · Political System · Panchayati Raj · Public Policy · Rights
• Economic + Social Development: Sustainable Development · Poverty · Inclusion · Demographics · Social Sector
• Environment + Ecology + Biodiversity + Climate Change: General issues, no subject specialisation
• General Science: Basic concepts of physics, chemistry, biology applied to everyday life

Paper 2 — CSAT (Qualifying)

Five skill areas tested at Class 10 mathematical level:

• Comprehension — long passage-based questions
• Interpersonal + Communication Skills
• Logical Reasoning + Analytical Ability
• Decision Making + Problem Solving
• Basic Numeracy + Data Interpretation — Class 10 level math

Despite being "qualifying", CSAT has eliminated many serious aspirants who underprepared. 33% (66/200) is non-trivial when the paper is calibrated to test interpretation speed under pressure.

Mains — Exam pattern

Failing either Paper A or B disqualifies you regardless of how well you scored elsewhere. No negative marking on Mains — descriptive answers are scored 0 to full marks by trained examiners.

Mains Essay Paper (250 marks)

Two essays · ~1000-1200 words each · pick from 8-10 topics across two sections (philosophy + governance / society + economy / environment + technology / current affairs). Assessment criteria: clarity, coherence, originality, balanced argumentation, language quality. Top Essay scores are typically 130-145/250; sub-100 essays usually correlate with lower final rank.

Mains GS Paper 1 — Heritage + History + Geography + Society (250 marks)

Indian Culture + History

• Indian art forms, literature, architecture from ancient to modern times
• Modern Indian history mid-18th century onwards — significant events, personalities, issues
• Freedom Struggle — stages + contributors from different parts of the country
• Post-Independence consolidation + reorganization (states reorganisation, integration)

World History

• Industrial Revolution + 18th century onward
• World Wars and reshaping of national boundaries
• Political philosophies: communism, capitalism, socialism — their effects on society

Indian Society

• Diversity + salient features of Indian society
• Role of women + women's organisations
• Population issues + associated developmental challenges
• Urbanization, problems, remedies
• Globalization effects on Indian society
• Social empowerment · communalism · regionalism · secularism

Geography

• Salient features of world physical geography
• Distribution of key natural resources across South Asia + Indian sub-continent
• Factors for primary, secondary, tertiary sector industry location
• Geophysical phenomena — earthquakes, tsunamis, volcanic activity, cyclones
• Critical geographical changes — water bodies, ice caps, flora/fauna and the impact

Mains GS Paper 2 — Governance + Constitution + IR (250 marks)

• Constitutional framework: Historical underpinnings + evolution + features + amendments + basic structure doctrine + comparison with other countries
• Federal structure: Union + State + Local — devolution of powers + finances + tensions
• Separation of powers: Between organs + dispute redressal mechanisms + institutions
• Legislature: Parliament + State legislature structure, functioning, procedures, business privileges
• Executive + Judiciary: Structure, organisation, functioning, ministry + departments
• Representation of People's Act — provisions and issues
• Constitutional appointments + Statutory + Regulatory + Quasi-judicial bodies
• Government policies + interventions across sectors and design + implementation issues
• NGOs + SHGs + various groups + associations + donors + charities + institutional + other stakeholders
• Welfare schemes for vulnerable populations + performance of schemes + statutory bodies for protection
• Health + Education + HR management — issues + government schemes
• Governance: Transparency + accountability + e-governance + applications + models + successes + limitations
• Civil service role in a democracy
• International Relations: India + neighbours · Bilateral + Regional + Global groupings (G20, SAARC, BRICS, QUAD, ASEAN, SCO) involving and affecting India · International institutions (UN, WTO, IMF, WB, ICJ) + their structure + mandate · Effects of developed and developing country policies on Indian interests · Indian diaspora

Mains GS Paper 3 — Tech + Economy + Environment + Security (250 marks)

Indian Economy

• Planning + Mobilisation of resources + Growth + Development + Employment
• Inclusive growth + issues arising
• Government Budgeting

Agriculture

• Major crops + cropping patterns + irrigation systems + storage + transport + marketing
• Issues + remedies + farm subsidies + MSP + PDS
• Food security + buffer stocks
• Food processing + related industries
• Land reforms in India
• Animal husbandry economics

Industry + Infrastructure

• Liberalization effects + industrial policy changes + impact on growth
• Infrastructure: Energy + Ports + Roads + Airports + Railways
• Investment models — PPP, BOT, EPC

Science + Technology

• Developments + applications + effects on everyday life
• Achievements of Indians in S&T + indigenisation
• IT + Space + Computers + Robotics + Nanotechnology + Biotechnology
• Intellectual Property Rights

Environment

• Conservation + pollution + degradation + Environmental Impact Assessment
• Disaster + Disaster Management (DM Act 2005 + NDMA + State authorities)

Internal Security

• Extremism + development linkages + Naxalism + Left-wing extremism
• External state + non-state actor challenges
• Cyber security · Money laundering · Border security
• Organized crime + terrorism linkages
• Security forces + agencies + mandate

Mains GS Paper 4 — Ethics + Integrity + Aptitude (250 marks)

The differentiator paper. ~50% answers + ~50% case studies. Topics:

• Ethics + human values · essence, determinants, consequences of ethics in human actions
• Dimensions of ethics in private + public relationships
• Human values — lessons from leaders, reformers, administrators
• Role of family + society + educational institutions in inculcating values
• Attitudes — content, structure, function, influence + relation with thought + behaviour
• Moral + political attitudes · Social influence + persuasion
• Aptitude + foundational values for civil service — integrity, impartiality, non-partisanship, objectivity, dedication to public service, empathy, tolerance, compassion towards weaker sections
• Emotional intelligence — concepts, utilities + application in administration + governance
• Contributions of moral thinkers + philosophers from India + the world
• Public/Civil service values + ethics in Public administration: status + problems, ethical concerns + dilemmas, laws + rules + regulations + conscience as source of ethical guidance
• Accountability + ethical governance; strengthening ethical + moral values; ethical issues in international relations + funding; corporate governance
• Probity in governance — public service · philosophical basis of governance + probity
• Information sharing + transparency · Right to Information · Codes of Ethics + Conduct · Citizen's Charters · Work culture · Quality of service delivery · Utilization of public funds · Challenges of corruption
• Case studies on the above issues — answer how you would handle a real-world ethical dilemma as an officer

Optional Subject (Paper VI + VII — 500 marks total)

Pick ONE subject from 48. Two papers · 250 marks each · 3 hours each. This is the single biggest scoring lever — top rankers consistently score 280-340 in their Optional combined. The 48 subjects:

Humanities + social sciences (most popular): Political Science + International Relations (PSIR) · Sociology · Geography · History · Anthropology · Public Administration · Philosophy · Psychology · Law · Economics · Commerce + Accountancy · Management.

Sciences + engineering: Mathematics · Physics · Chemistry · Botany · Zoology · Statistics · Agriculture · Animal Husbandry + Veterinary Science · Geology · Civil Engineering · Mechanical Engineering · Electrical Engineering · Medical Science.

Literature (22 languages): Assamese, Bengali, Bodo, Dogri, Gujarati, Hindi, Kannada, Kashmiri, Konkani, Maithili, Malayalam, Manipuri, Marathi, Nepali, Odia, Punjabi, Sanskrit, Santhali, Sindhi, Tamil, Telugu, Urdu, English.

How to choose: Pick a subject where you have a real interest + decent past exposure (graduation background helps but isn't mandatory). Look at scoring patterns from past toppers + availability of quality coaching + study material. Avoid niche subjects where you can't find peer discussion + previous-year answer scripts.

Qualifying language papers

Paper A: Any one of the 22 Indian languages from Schedule VIII of the Constitution. Paper B: English. Both at matriculation level. 25% minimum to pass each — fail either and you're disqualified even with topper-level marks elsewhere. Don't ignore these; the failure rate is non-trivial.

Paper structure (both): Comprehension of given passages · Précis writing · Usage + vocabulary · Short essays · Translation (English ↔ Indian language) · script options where applicable.

Personality Test (Interview) — 275 marks

The final round. Board of 5 members (UPSC member + subject experts + observers). Duration ~30 minutes. NOT a knowledge test — the board has already seen your Mains marks; they're now testing whether you have the personality and judgement for civil service.

Typical question areas:

• DAF-based (Detailed Application Form you submitted)
• Hobbies + interests you wrote in the DAF
• Optional subject — basic knowledge + recent developments
• Home state — geography, history, current issues, governance
• Previous education + work experience
• Current affairs — last 6 months · ethical positions on contemporary issues
• Hypothetical scenarios — administrative dilemmas, ethical conflicts

Scoring range: typically 130-220. A ~180+ Interview score is considered excellent. Final rank can shift by 100-200 positions based on Interview alone.

Final merit + service allocation

Final Merit = Mains scoring marks (out of 1,750)
            + Interview marks (out of 275)
            = max 2,025 marks

UPSC publishes the final rank list typically 11-12 months after the Mains exam. Service allocation happens via:

1. Rank + category-wise merit position
2. Service preference filled in the DAF (rank order of services)
3. Cadre preference (state allocation, for IAS/IPS)
4. Medical fitness for the chosen service (e.g. IPS has higher physical standards)

Preparation strategy — 12-18 month framework

1. Month 1-3 — Foundation: NCERT class 6-12 for History, Geography, Polity, Economics, Science. Build the conceptual base. Read newspaper (The Hindu or Indian Express) daily from day 1.
2. Month 4-6 — Standard books: Laxmikanth (Polity), Spectrum/Bipan Chandra (Modern History), NCERT + GC Leong (Geography), Ramesh Singh (Economy). Begin Optional subject prep in parallel.
3. Month 7-9 — Current Affairs deep-dive + Optional consolidation: Monthly current affairs compilations (Vision IAS, Insights, ForumIAS). Solve Prelims previous-year papers (last 10 years) under timed conditions.
4. Month 10-12 — Mains answer writing + Mock tests: 30-40 mocks for Prelims. Daily 2-3 Mains answers in 7-min slot. Test series for Optional + GS. Essay practice: 1 essay per week, 1000 words.
5. Final 2 months before Mains: Revision + answer writing + paper-wise mocks at exam-day timing. NO new material — strengthen what you know.
6. Post-Mains, pre-Interview: DAF revision + mock interviews + current affairs. Read your home state + Optional + hobbies in depth.

Recommended books per section

• Polity: M. Laxmikanth — Indian Polity (the canonical text)
• Modern History: Spectrum (A Brief History of Modern India) OR Bipan Chandra (India's Struggle for Independence)
• Ancient + Medieval History: NCERT Class 11 + 12 (Themes in Indian History) + R.S. Sharma (Ancient India)
• Geography: NCERT Class 11 + 12 + G.C. Leong (Certificate Physical and Human Geography) + Oxford School Atlas
• Economy: Ramesh Singh (Indian Economy) + Economic Survey + NCERT Class 11 + 12 Economics
• Environment + Ecology: Shankar IAS Environment Module
• Science + Tech: NCERT Class 6-10 Science + The Hindu Sci+Tech section
• Current Affairs: The Hindu + Indian Express daily, Yojana + Kurukshetra monthly, Vision IAS monthly compilations, PIB.gov.in
• Ethics (GS-4): Lexicon (Chronicle Publications) + Subba Rao (G. Subba Rao) — Ethics, Integrity and Aptitude
• Essay: Past topper answer scripts + Insights essay writing + brainstorm 30 broad themes
• CSAT: R.S. Aggarwal Quant for the numeracy + previous-year CSAT papers

Related civil services + competitive pages

• UPSC CSE 2026 Notification + Application — full vacancy + dates + apply-online guide
• SSC CGL Syllabus 2026 — alternative central-government track for graduates
• State PSC Pages — UPPSC, BPSC, MPPSC, KPSC, TNPSC for state-level civil services