The Union Public Service Commission (UPSC) conducts the civil services examination (CSE). This UPSC exam is organised yearly to recruit candidates for Group A posts such as the Indian Administrative Service (IAS), Indian Police Service (IPS), and Indian Foreign Service (IFS). This exam is conducted in 3 stages: Prelims, Mains, and Interview. UPSC has released its annual calendar for 2027.
Stages of UPSC CSE Exam
The UPSC Civil Services Examination is conducted in three stages. Each stage tests candidates on different skills and plays an important role in the final selection.
1. Civil Services Preliminary Examination (UPSC Prelims)
UPSC Prelims is the first stage of the UPSC CSE. It consists of two objective-type papers: General Studies Paper I and CSAT (General Studies Paper II). GS Paper I is used for determining the Prelims cut-off, while CSAT is qualifying in nature.
2. Civil Services Main Examination (UPSC Mains)
Candidates who qualify for UPSC Prelims appear for the Mains examination. It is a descriptive written examination that tests a candidate’s understanding, analytical ability, knowledge, and answer-writing skills. The Mains stage includes nine papers, of which two are qualifying.
3. Personality Test (UPSC Interview)
Candidates who qualify for the UPSC Mains written examination are called for the UPSC Personality Test. It assesses qualities such as personality, judgement, communication skills, awareness and suitability for a career in public service. The final merit list is prepared based on the marks obtained in Mains and the Personality Test.
UPSC CSE Annual Calendar 2027
| Examination Event |
Scheduled Date |
| UPSC Notification Release |
13 January 2027 |
| Online Application Deadline |
2 February 2027 |
| UPSC Prelims Exam |
23 May 2027 (Sunday) |
| UPSC Mains Exam |
From 20 August 2027, for five days |
| Personality Test |
Expected in early 2028 |
UPSC Prelims Exam Pattern
The UPSC Prelims Exam Pattern consists of two compulsory objective-type papers conducted on the same day. Each paper carries 200 marks and has a duration of two hours, with questions available in both Hindi and English. The Civil Services Aptitude Test (CSAT) is a qualifying paper, for which candidates must secure at least 33% marks. The UPSC also applies negative marking for incorrect answers, making accuracy and time management important aspects of the UPSC Prelims preparation strategy.
| Paper |
Subject |
Marks |
Duration |
Nature |
| Paper 1 |
General Studies |
200 |
2 Hours |
Merit for Prelims cutoff |
| Paper 2 |
CSAT |
200 |
2 Hours |
Qualifying, 33% minimum |
The marks obtained in the Preliminary Examination are not counted in the final merit list. The examination is used to shortlist candidates for the Mains examination. There is negative marking for wrong answers. One-third of the marks assigned to a question is deducted for an incorrect answer. There is no penalty for leaving a question unanswered.
UPSC Prelims Syllabus
The UPSC Prelims Syllabus covers two compulsory papers: General Studies Paper I and General Studies Paper II (CSAT). Both papers carry 200 marks each and are designed to assess a candidate’s general awareness, understanding of key subjects, aptitude and reasoning abilities. Understanding the Prelims Syllabus and the weightage of each area can help aspirants plan their preparation and prioritise important topics effectively.
General Studies Paper I
The UPSC Civil Services Preliminary Examination General Studies Paper 1 covers the following major areas:
1. Current Events of National and International Importance
- National and international current affairs
- Government schemes and policies
- Important national and international events
- International organisations and institutions
- Important summits and conferences
- Awards and important appointments
- Science and technology developments
- Environmental developments
- Major economic developments
2. History of India and Indian National Movement
- Ancient Indian history
- Indus Valley Civilisation
- Vedic Age
- Buddhism and Jainism
- Mauryan and Gupta periods
- Medieval Indian history
- Delhi Sultanate and Mughal Empire
- Bhakti and Sufi movements
- Indian art, culture and architecture
- Arrival of Europeans in India
- British expansion and administration
- Revolt of 1857
- Social and religious reform movements
- Indian National Movement
- Gandhian era and major national movements
- Important personalities and events of the freedom struggle
3. Indian and World Geography
- Physical geography of India and the world
- Earth structure and geological features
- Mountains, plateaus, plains and rivers
- Climate, weather and monsoon
- Ocean currents and major geographical phenomena
- Indian soils and natural vegetation
- Agriculture and irrigation
- Minerals and energy resources
- Industries and transport
- Population and settlements
- Distribution of natural resources
- Major industries and economic activities
4. Indian Polity and Governance
- Indian Constitution and its features
- Preamble, Fundamental Rights and Fundamental Duties
- Directive Principles of State Policy
- Constitutional amendments
- Parliament and State Legislatures
- President, Prime Minister and Council of Ministers
- Governor and Chief Minister
- Supreme Court and High Courts
- Constitutional and statutory bodies
- Centre-State relations
- Panchayati Raj and local government
- Elections and electoral system
- Public policy and governance
- Transparency, accountability and e-governance
- Rights issues and welfare schemes
5. Economic and Social Development
- Basic concepts of the Indian economy
- Economic growth and development
- GDP, inflation and unemployment
- Fiscal and monetary policy
- Banking and financial system
- Government budget and taxation
- Balance of payments and foreign trade
- Poverty and inequality
- Inclusive and sustainable growth
- Financial inclusion
- Demographic changes
- Health and education
- Women and child development
- Social welfare and vulnerable sections
6. Environment, Ecology and Biodiversity
- Basic concepts of ecology
- Ecosystems and food chains
- Biodiversity and its conservation
- Endangered species
- National parks and wildlife sanctuaries
- Protected areas and conservation programmes
- Environmental pollution
- Climate change and global warming
- Greenhouse gases and ozone layer
- Renewable energy
- Sustainable development
- Environmental laws and policies
- Important international environmental conventions
7. General Science
- Basic concepts of Physics
- Basic concepts of Chemistry
- Basic concepts of Biology
- Human body and diseases
- Genetics and biotechnology
- Space technology
- Nuclear technology
- Defence technology
- Artificial intelligence and digital technology
- Nanotechnology
- Communication technology
- Important scientific developments and discoveries
General Studies Paper II: CSAT
-
Comprehension
-
Interpersonal and Communication Skills
-
Logical Reasoning and Analytical Ability
-
Decision-Making and Problem-Solving
-
General Mental Ability
-
Basic Numeracy & Data Interpretation
CSAT is a qualifying paper with 200 marks. Candidates need to score at least 33% marks to appear in the next stage of the examination.
UPSC Prelims Syllabus Subject-wise Summary
| Subject |
Important Areas |
| History |
Ancient, Medieval, Modern India, National Movement |
| Art & Culture |
Architecture, dance, music, literature, painting |
| Geography |
Physical, Indian and World Geography |
| Polity |
Constitution, Parliament, Judiciary, Executive, Bodies |
| Economy |
Banking, inflation, taxation, fiscal policy, external sector |
| Environment |
Ecology, biodiversity, climate change, conservation |
| Science & Technology |
Biology, space, biotechnology, AI, defence technology |
| Current Affairs |
National, international, economic, environmental and scientific developments |
| CSAT |
Comprehension, reasoning, numeracy, data interpretation |
UPSC Mains Syllabus 2027
The UPSC Civil Services Main Examination has 9 written papers. Two papers are in Indian Language and English; these are qualifying in nature. The remaining 7 papers are Essay, 4 General Studies papers, and 2 optional subjects papers; these are counted for merit. The written examination carries 1750 marks. The interview carries 275 marks; including these marks, the total is 2025, which is considered for final ranking. The UPSC Mains Syllabus covers a broad range of subjects and topics. Aspirants need to be focused while making their study plan. They have to identify which topic carries more weightage according to their importance; there are many sources available that guide candidates about the study plan.
The UPSC Mains exam is descriptive in nature, and it tests the candidate's knowledge, understanding, and creative thinking about the concept and how they can connect it with current affairs. The most important principles for Mains preparation are clarity of concepts, linking them with current affairs, analysing previous year questions, and preparing repeated themes from multiple aspects.
UPSC Mains Examination Marks
| Paper |
Subject |
Marks |
Nature |
| Paper A |
Indian Language |
300 |
Qualifying |
| Paper B |
English |
300 |
Qualifying |
| Paper I |
Essay |
250 |
Merit |
| Paper II |
General Studies I |
250 |
Merit |
| Paper III |
General Studies II |
250 |
Merit |
| Paper IV |
General Studies III |
250 |
Merit |
| Paper V |
General Studies IV |
250 |
Merit |
| Paper VI |
Optional Subject Paper I |
250 |
Merit |
| Paper VII |
Optional Subject Paper II |
250 |
Merit |
| Written Total |
1750 |
| UPSC Personality Test |
275 |
| Final Total |
2025 |
UPSC Mains Exam Pattern 2027
Under the UPSC Mains Exam Pattern 2027, the qualifying language papers assess a candidate’s basic comprehension, reading ability, and written expression. The marks obtained in these papers are not counted towards the final merit score, but candidates must secure the prescribed minimum qualifying marks to remain eligible for evaluation of the merit papers. The seven merit papers are Essay, General Studies Paper 1, General Studies Paper 2, General Studies Paper 3, General Studies Paper 4, Optional Paper 1, and Optional Paper 2.
UPSC Mains Subject Details
Indian Language and English Papers
Paper A and Paper B are qualifying papers. Their marks are not included in the final merit list. These papers contain:
- Comprehension
- Precis writing
- Short essays
- Language usage
Essay Paper
The Essay paper carries 250 marks. Candidates have to write essays on the topics given in the question paper. This paper tests how you think about a topic and present your ideas in a clear and organised manner. It checks your understanding and ability to connect different aspects of a topic.
UPSC Optional Subject
Candidates have to choose one UPSC Optional Subject from the list provided by UPSC. It has two papers of 250 marks each, making a total of 500 marks.
General Studies Paper I
This paper covers Indian heritage and culture, history, geography, and society. The paper carries 250 marks. It tests how well you understand important events, social changes and geographical features of India and the world. GS Paper I covers:
- Indian culture
- Indian history
- Indian freedom struggle
- World history
- Indian society
- Geography of India and the world
General Studies Paper II
This General Studies Paper II mainly deals with Indian polity, governance, social justice, and international relations. The paper carries 250 marks. It focuses on how the Indian political and administrative system works, how government policies affect people, and how India deals with other countries. GS Paper II covers:
- Indian Constitution
- Polity and governance
- Parliament and judiciary
- Government policies and schemes
- Social justice
- International relations
General Studies Paper III
This General Studies Paper III covers Economy, agriculture, disaster management, and internal security. The paper carries 250 marks. It focuses on India’s economic growth, development, use of science and technology, and environmental issues. This paper also looks at how these areas affect development and public life. GS Paper III covers:
- Indian economy
- Agriculture
- Science and technology
- Environment
- Disaster management
- Internal security
General Studies Paper IV
This General Studies Paper IV covers Ethics, integrity, and aptitude. The paper carries 250 marks and focuses on the values and qualities needed in public service. It tests how you understand ethical issues and how you respond to difficult situations. GS Paper IV is the Ethics paper. It covers:
- Ethics and human values
- Attitude
- Emotional intelligence
- Public service values
- Probity in governance
- Case studies
UPSC Personality Test
The UPSC Personality Test, also called the UPSC Interview, is the final and third stage of the Civil Services Examination. It is conducted after the Mains Examination and aims to assess the candidate’s overall personality, suitability for a career in public service, and ability to handle different situations.
Key Details of the UPSC Personality Test
-
Total Marks: 275 marks.
-
Duration: Usually around 20–30 minutes, although it can vary.
-
Interview Board: The interview is conducted by a board appointed by the UPSC.
-
Location: The Personality Test is conducted at the UPSC office in New Delhi.
-
No Fixed Syllabus: There is no fixed set of questions for the interview.
-
Questions: Questions can be based on the candidate’s Detailed Application Form (DAF), education, work experience, hobbies, interests, current affairs, home state, and important national and international issues.
-
Assessment: The board looks at qualities such as confidence, clarity of thought, communication skills, balanced judgement, awareness, honesty, and suitability for public service.
-
Final Merit: The marks obtained in the Mains written examination and Personality Test are added to determine the final rank. The qualifying language papers are not counted for merit.
What Does UPSC Assess in the Interview?
The UPSC Personality Test is not simply a test of factual knowledge. It assesses how a candidate thinks and responds to different situations. The board may look at:
Mental alertness
Critical thinking
Logical reasoning
Clear and concise communication
Balance of judgement
Leadership ability
Social awareness
Interest in current affairs
Integrity and honesty
Ability to handle pressure
Suitability for public service
Way forward
A regular and well-planned approach is important for UPSC CSE preparation. Aspirants should understand the syllabus and build a clear understanding of basic concepts. They should connect current affairs with static subjects for better understanding. Regular practice of previous year questions, answer writing, and mock tests is also important. Aspirants should give proper time to Prelims, Mains, Essay, Optional and CSAT. A simple study plan, regular revision, and continuous practice can help improve accuracy, time management, and answer-writing skills.
Frequently Asked Questions (FAQs)
1. What is the UPSC Syllabus 2027?
The UPSC Syllabus 2027 covers the subjects and topics for the Civil Services Preliminary and Main Examinations. It includes General Studies, CSAT, Essay, Optional Subject, qualifying language papers, and other prescribed areas.
2. What is included in the UPSC Prelims Syllabus 2027?
The UPSC Prelims Syllabus includes General Studies Paper I and General Studies Paper II (CSAT). GS Paper I covers areas such as History, Geography, Polity, Economy, Environment, Science and Technology, and Current Affairs, while CSAT tests aptitude, comprehension, reasoning, and basic numeracy.
3. What is included in the UPSC Mains Syllabus 2027?
The UPSC Mains Syllabus includes Essay, General Studies Papers I–IV, two qualifying language papers, and two Optional Subject papers. The General Studies papers cover areas including Indian heritage and culture, governance, polity, economy, technology, environment, ethics, and international relations.
4. Is the UPSC Prelims syllabus different from the Mains syllabus?
Yes. UPSC Prelims primarily tests objective knowledge and aptitude through multiple-choice questions, while UPSC Mains evaluates analytical understanding, critical thinking and answer-writing ability through descriptive papers.
5. How many General Studies papers are there in UPSC Mains 2027?
There are four General Studies papers in UPSC Mains: GS Paper 1, GS Paper 2, GS Paper 3, and GS Paper 4. Each paper covers different areas of the UPSC Mains syllabus and carries 250 marks.
6. Does the UPSC Mains syllabus include an Essay paper?
Yes. The UPSC Mains Essay paper is part of the merit papers and carries 250 marks. Candidates are required to write essays on selected topics while demonstrating relevance, clarity, logical organisation, and effective expression.
7. Is an Optional Subject included in the UPSC Mains Syllabus 2027?
Yes. Candidates have to select one Optional Subject, for which there are two papers. Each Optional Subject paper carries 250 marks, making the Optional Subject an important component of the Mains merit score.
8. Are the language papers included in the UPSC Mains syllabus?
Yes. UPSC Mains includes two qualifying language papers: one Indian language selected from the prescribed list and English. These papers test basic comprehension and written expression, and their marks are not counted towards the final merit ranking.
9. Where can I download the UPSC Syllabus 2027 PDF?
Candidates should download the latest UPSC Syllabus 2027 PDF from the official Union Public Service Commission (UPSC) website. The official notification and syllabus should be treated as the primary source for understanding the examination requirements.
10. How should I prepare according to the UPSC Syllabus 2027?
Start by dividing the syllabus into individual subjects and topics. Cover basic concepts, use standard study material, follow current affairs, solve previous year questions, and practise answer writing. Regular revision and linking preparation directly to the UPSC Syllabus 2027 can help maintain a focused and structured preparation strategy.