The UPSC Civil Services Examination selects officers for services such as the IAS, IPS and IFS, along with many other central services. It is a three-stage exam: Prelims, Mains and the personality test (interview). The syllabus is wide, and the best way to handle it is paper by paper. This page maps the syllabus clearly, so you know what to study and in what order.
Exam stages in brief
The Prelims has two objective papers of two hours each: General Studies Paper I (100 questions, 200 marks) and the Civil Services Aptitude Test (CSAT) Paper II (80 questions, 200 marks). CSAT is qualifying, which means you only need to reach the minimum score of 33%, and only Paper I is counted for the cutoff. There is negative marking of one-third for wrong answers.
The Mains is a written, descriptive exam of nine papers. Two language papers (an Indian language and English) are qualifying. The scoring papers are an essay, four General Studies papers and two optional subject papers, and these add up to 1,750 marks. The personality test carries 275 marks, for a total of 2,025. Always confirm the latest rules, eligibility, age limits and number of attempts in the UPSC notification.
Prelims: General Studies Paper I
- Current events of national and international importance.
- History of India and the Indian national movement.
- Indian and world geography: physical, social and economic geography.
- Indian polity and governance: Constitution, political system, panchayati raj, public policy and rights issues.
- Economic and social development: sustainable development, poverty, inclusion, demographics and social sector initiatives.
- Environment: ecology, biodiversity and climate change.
- General science.
Paper I questions are often conceptual and statement-based, so understand topics deeply instead of memorising lists. NCERT books for Classes 6 to 12 are the standard starting point.
Prelims: CSAT Paper II
- Comprehension and English language comprehension (Class X level).
- Logical reasoning and analytical ability.
- Decision making and problem solving.
- General mental ability, basic numeracy and data interpretation (Class X level).
- Interpersonal skills including communication.
Even though it is qualifying, many candidates have lost their attempt here. Practise a few passages and maths questions regularly, so it does not become a risk.
Mains: Essay and General Studies
Essay: two essays on varied topics, which test clarity, structure and balanced thinking.
GS Paper I: Indian heritage and culture, history and geography of the world, and Indian society.
GS Paper II: governance, the Constitution, polity, social justice and international relations.
GS Paper III: technology, economic development, biodiversity, environment, security and disaster management.
GS Paper IV: ethics, integrity and aptitude, including case studies.
Mains answers must be structured, with an introduction, a body with examples and data, and a balanced conclusion. Practice writing within the word and time limits is as important as reading.
Mains: Optional subject
You choose one optional subject from a list published by UPSC, and it has two papers. Choose a subject based on your interest, your background, the availability of study material and how much overlap it has with General Studies. Many toppers change their choice only once, early on, so decide before you invest months.
Personality test
The interview checks your mental alertness, clarity of expression, balanced judgement and awareness of your own background and the world. Prepare your detailed application form, your hobbies and your optional subject, and stay updated on current issues.
How to approach preparation
- Know the syllabus first. Print it and map every topic to a book or source.
- Build the base: NCERTs and one standard book per subject.
- Current affairs daily: a newspaper and a monthly compilation. See our current affairs page.
- Practise tests: try our mock tests and previous-year-style questions, then move to full-length tests.
- Write answers early: begin answer writing well before Mains.
- Revise in cycles, at least three times before Prelims.
The overall effort is long, often a year or more, so plan a realistic daily routine. Our 3-month strategy article also shows how to split study time across subjects, even though it is for SSC.
Common mistakes to avoid
- Collecting too many books and revising none of them. Choose a few sources and revise them again and again.
- Treating current affairs as a separate subject. Link every news item to a syllabus topic.
- Delaying answer writing until after Prelims. Mains is a writing exam, and writing speed takes months to build.
- Choosing an optional subject because others did, without checking your own interest and available material.
- Ignoring CSAT because it is qualifying, and then falling short of the minimum mark.
Making a daily routine
A workable day for a full-time aspirant has four parts: a few hours on a static subject, an hour for the newspaper and notes, an hour for revision, and a block for test practice or answer writing. Working aspirants can follow the same structure over a longer period, with fewer hours each day and a more patient timeline. Keep one rest day each week, because steady effort over many months matters far more than intense bursts followed by burnout.
Previous-year papers
Solve the previous-year Prelims papers published by UPSC to learn the style of questions, the level of detail and how the statements are framed. For Mains, study the question papers topic by topic to see which areas repeat, and use them to decide what to read in depth.
Frequently asked questions
Is graduation required?
Yes, a degree from a recognised university is needed, but check the notification for details and age limits.
Is CSAT counted for ranking?
No, it is qualifying only, but you must clear the minimum mark.
How many optional papers are there?
Two papers of one optional subject, each carrying 250 marks.
GovAspirant is a private education portal and is not affiliated with any government body. Exam rules change, so always confirm dates, pattern and eligibility in the official notification.