UPSC Civil Services Exam: Stages, Pattern, Syllabus & Eligibility

The Union Public Service Commission holds one combined examination that fills posts across a large group of central services. The best known are the Indian Administrative Service, the Indian Police Service and the Indian Foreign Service, but the same examination also recruits for the Indian Revenue Service, the Indian Audit and Accounts Service, the Indian Railway Management Service and many others, along with certain Group B posts in the central secretariat and the union territories.

Candidates fill a service preference order in the application. Allotment then happens by rank and preference together, which is why the service you finally get depends as much on your rank as on what you wanted. A candidate who lists IAS first but finishes outside the range for it moves down their own preference list, not somebody else's.

One point worth settling early: this is a single examination, not a family of separate ones. The Indian Forest Service shares the Prelims but has its own Mains, and candidates who want both must indicate that at the application stage. Everything else in this guide refers to the main civil services stream.

The exam runs on an annual cycle, with the notification usually appearing early in the calendar year and the final result arriving well over a year later. Plan for that length. Candidates who treat it as a six-month project almost always run out of preparation before the cycle runs out of stages.

The preliminary examination is held on a single day in two sessions. Both papers are objective, and both are compulsory, but they do very different jobs.

Read that last column again, because it is the most misunderstood part of this exam. CSAT does not add to your score. You need roughly 66 of its 200 marks to clear it, and beyond that a higher CSAT score buys you nothing. The merit list for Prelims is drawn purely from GS Paper 1.

GS Paper 1 covers current events of national and international importance, Indian history and the freedom movement, Indian and world geography, Indian polity and governance, economic and social development, environment and biodiversity, and general science. That spread is the reason a broad General Studies base matters more here than depth in any single subject.

CSAT tests comprehension, logical reasoning and analytical ability, decision making, general mental ability, basic numeracy and data interpretation at roughly Class 10 level. Candidates from a mathematics background often clear it without preparation. Those from a pure humanities background should not assume the same — the paper has been difficult enough in some years to eliminate otherwise strong candidates.

Negative marking of one-third of the marks applies for each wrong answer, and decision-making questions in CSAT have been exempted from it in past cycles. Confirm the current negative marking rules from the notification for your year, since the Commission has adjusted them before.

The main examination is entirely descriptive and is written over several days. There are nine papers, but two of them contribute nothing to your rank.

Seven papers of 250 marks each give the written total of 1750. The two language papers must simply be passed; if you fail them, the rest of your Mains scripts are not even evaluated, which is a harsh but frequently forgotten rule.

The four General Studies papers each have a defined character. GS 1 covers Indian heritage and culture, along with the history and geography of India and the world, and Indian society. GS 2 covers governance, the Constitution, polity, social justice and international relations. GS 3 covers the economy, science and technology, biodiversity and environment, internal security and disaster management. GS 4 covers ethics, integrity and aptitude, and includes case studies.

The optional subject is chosen by the candidate from the Commission's list and carries 500 marks across two papers. That is nearly a third of the written total resting on one subject, so the choice deserves real thought rather than a quick decision based on which optional currently looks fashionable.

Candidates who clear Mains are called for the Personality Test, worth 275 marks. It is conducted by a board at the Commission and is not a knowledge quiz. The board works from the Detailed Application Form — your graduation subject, home state, hobbies, service preferences and work experience are all fair territory, and so is your view on current national issues.

Adding the two stages gives the final total: 1750 from Mains plus 275 from the Personality Test equals 2025 marks. Nothing from Prelims enters this figure.

The educational qualification is a bachelor's degree in any discipline from a recognised university. The subject does not matter and there is no minimum percentage. Candidates in their final year may apply, subject to producing proof of passing before the Mains stage.

The age band for the general category is 21 to 32 years as on the cut-off date in the notification, with the usual relaxations: three years for OBC, five years for SC and ST, and further concessions for persons with benchmark disabilities and certain ex-servicemen categories.

The attempt limit is what makes this exam different from most others. General category candidates get six attempts, OBC candidates get nine, and SC and ST candidates may attempt until the upper age limit. Appearing in Prelims counts as an attempt even if you write only one paper. Because age limits, relaxations and attempt rules have been debated and revised over the years, verify them against the notification for your cycle rather than an older coaching handout.

Once you know where the marks sit, the sequence of preparation follows naturally. Prelims is a filter, Mains builds the rank, and the Personality Test adjusts it at the margin.

Start with the General Studies base, because it serves both Prelims and Mains. NCERT textbooks from Class 6 to 12 in history, geography, polity, economics and science are the standard foundation, and there is no shortcut around them. Read them once for understanding, then a second time making notes you will actually revise.

Move to standard reference books for polity, modern history, geography and economy only after the NCERT layer is solid. Adding advanced material on a weak base is the most common reason candidates feel they are reading endlessly without retaining anything.

Treat current affairs as a running thread rather than a subject. One newspaper daily plus one monthly compilation is enough; the trap is collecting material you never revise. Link each news item to the static topic behind it — a scheme to the polity chapter, a summit to international relations — and both halves become easier to recall.

Answer writing has to begin early. Mains is a writing examination, and knowing a topic is not the same as being able to structure 150 words on it in seven minutes. Start with one question a day from a topic you have just finished revising.

Choose the optional subject by three tests: genuine interest, availability of material, and overlap with the GS papers. Then stop reconsidering it. Changing an optional after a year of preparation costs more than any marginal advantage the new one might offer.

Candidates who are also writing other examinations should note where the effort transfers. The polity, history, geography and economy base overlaps heavily with SSC CGL and state services, while the banking-focused awareness in IBPS PO does not. For a structured General Studies foundation, see the Crazy GkTrick course catalogue.