UPSC Syllabus 2026: Prelims, Mains, Optional Subjects + PDF Download

The UPSC syllabus for the Civil Services Examination (CSE) 2026 is spread across three stages — the Preliminary Examination (400 marks, objective and screening only), the Main Examination (1750 counted marks), and the Personality Test or Interview (275 marks). Prelims tests General Studies and the CSAT aptitude paper; Mains has nine descriptive papers — Essay, four General Studies papers, one optional subject (two papers), and two qualifying language papers. Prelims marks are not added to your final rank: only Mains (1750) plus Interview (275) — a grand total of 2025 marks — decides your merit position and service allotment.

This guide lays out the complete, official CSE 2026 syllabus in one place — the full exam pattern, subject-wise Prelims and Mains breakdown, the entire list of 48 optional subjects, a Prelims-to-Mains overlap map, a printable revision tracker, and bilingual (English + Hindi) PDF download details. The Union Public Service Commission (UPSC) notifies this syllabus each February, and the structure below reflects the pattern applicable to the IAS syllabus 2026 cycle. It is drawn directly from the official UPSC CSE notification, so you can study straight from the source lines UPSC actually examines.

UPSC syllabus 2026 — quick facts:

• Stages: 3 — Prelims → Mains → Interview (must clear each to advance).
• Prelims: 2 objective papers — GS Paper I (200) + CSAT Paper II (200, qualifying at 33%).
• Mains: 9 descriptive papers; 7 count for merit (1750 marks), 2 language papers are qualifying only.
• Interview: 275 marks. Final merit: 1750 + 275 = 2025 marks.
• Optional subjects: choose 1 out of 48 (two papers, 500 marks).
• PDF: download the full syllabus in English & Hindi from the CSE notification on upsc.gov.in.

UPSC Syllabus 2026 at a Glance: The 3-Stage CSE Structure

The Civil Services Examination is a single, integrated examination conducted in three successive stages. You must clear each stage to advance to the next; there are no shortcuts and no lateral entry between stages. Understanding this structure is the first step in decoding the UPSC syllabus.

• Stage 1 — Preliminary Examination (Prelims): A screening test of two objective papers (GS Paper I and CSAT Paper II). Marks here only decide whether you qualify for Mains; they are discarded thereafter.
• Stage 2 — Main Examination (Mains): Nine descriptive papers written over roughly five to seven days. Seven papers (1750 marks) count toward merit; two language papers are merely qualifying.
• Stage 3 — Personality Test (Interview): A 275-mark board interview assessing suitability for a career in public service.

Only candidates who clear the Prelims cut-off are called for Mains, and only those who clear the Mains written cut-off are called for the Interview. The final IAS/IPS/IFS allotment is based on the combined Mains + Interview score of 2025 marks.

UPSC Exam Pattern 2026: Papers, Marks & Duration

Before you internalise the topic list, fix the exam pattern in your head — it tells you how much each part of the UPSC syllabus is actually worth. The table below summarises every paper across the three stages.

Key numbers to remember: Prelims total = 400 marks (both papers), Mains merit total = 1750 marks (7 counted papers × 250), Interview = 275 marks, and the grand total that decides your rank = 2025 marks. In Prelims, GS Paper I has 100 questions and CSAT has 80 questions, both carrying negative marking of one-third of the marks allotted for each wrong answer. There is no negative marking on the CSAT decision-making questions.

UPSC Prelims Syllabus: GS Paper I (200 Marks)

The upsc prelims syllabus for General Studies Paper I is the widest-ranging paper in the entire examination. It spans seven broad areas, and questions increasingly blend static concepts with current affairs. Below is the official subject-wise breakdown with the sub-topics that typically dominate the paper.

Because the weightage shifts every year, your GS Paper I preparation must be anchored in standard, updated notes rather than scattered PDFs. Aspirants who want the entire static syllabus in one printed set often rely on the Vision IAS GS 2026–27 booklets with value-added material, while Hindi-medium candidates prefer the Drishti IAS GS Notes in Hindi. Layer these with a current affairs magazine to convert the syllabus into exam-ready answers.

UPSC CSAT Syllabus: Prelims Paper II (200 Marks, Qualifying)

The upsc csat syllabus (Civil Services Aptitude Test) is the second Prelims paper. It is qualifying only — you must score at least 33% (66.67 out of 200 marks) to have your GS Paper I evaluated. Score below 33% in CSAT and your Prelims attempt is void, no matter how well you did in GS Paper I. Since 2023, CSAT has become noticeably tougher, so it can no longer be treated as a formality.

Non-mathematics and non-English-medium aspirants should not underestimate this paper. A dedicated Vision IAS CSAT Test Series or the Vajiram CSAT complete booklet set helps you cross the 33% threshold comfortably and frees up your energy for GS.

UPSC Mains Syllabus: Paper-by-Paper Breakdown

The upsc mains syllabus is where selection is truly decided. Nine descriptive papers test not just knowledge but the ability to structure, analyse and present arguments under time pressure. Here is the full paper-wise coverage.

Qualifying Language Papers (Paper A & Paper B — 300 marks each)

Paper A is in one Indian language chosen from the Eighth Schedule of the Constitution, and Paper B is English. Both are qualifying (pass mark is 25%) and their marks do not count toward your final merit. They test basic comprehension, précis writing, usage, vocabulary and short essays. Candidates from Arunachal Pradesh, Manipur, Meghalaya, Mizoram, Nagaland and Sikkim are exempt from Paper A.

Paper I — Essay (250 marks)

You write two essays (one from each of two sections), roughly 1000–1200 words each. Topics are abstract or philosophical and reward clarity, structure and balanced argumentation rather than raw facts. Structured practice with model essays — such as the Vajiram Essay Notes — sharpens introductions, flow and conclusions.

General Studies Paper I — Heritage, History, Geography & Society (250 marks)

Covers Indian heritage and culture; modern Indian history and the freedom struggle; post-independence consolidation; world history; salient features of Indian society; role of women; population and social issues; urbanisation; and the physical geography of the world.

General Studies Paper II — Governance, Constitution, Polity, Social Justice & IR (250 marks)

Covers the Indian Constitution and its features; the Union and States; separation of powers; parliament and state legislatures; the executive and judiciary; governance, transparency and accountability; welfare schemes; social sector (health, education, poverty); and India’s international relations, diplomacy and bilateral/regional groupings.

General Studies Paper III — Economy, Technology, Environment & Security (250 marks)

Covers Indian economy and planning; inclusive growth; government budgeting; agriculture and food security; land reforms; infrastructure; science and technology; developments in IT, space, biotech and nanotech; environment, biodiversity and disaster management; and internal security, cyber security and money laundering.

General Studies Paper IV — Ethics, Integrity & Aptitude (250 marks)

Tests ethics and human interface; attitude; aptitude and foundational values for civil service; emotional intelligence; contributions of moral thinkers; public/civil service values; probity in governance; and case studies. Focused material like the Drishti IAS Ethics Notes helps you master case-study framing, which is where most aspirants lose marks.

UPSC Optional Subjects List 2026: All 48 Choices

Every candidate must pick one optional subject with two papers of 250 marks each — 500 marks that frequently make or break the final rank. The upsc optional subjects list contains 48 options: 25 core subjects plus the literature of 23 languages. You may choose any subject regardless of your graduation background.

How Many Optional Subjects Are There in UPSC?

There are 48 optional subjects in total, but you select only one (two papers). The most popular high-overlap picks are Sociology, PSIR, Geography, Public Administration and Anthropology, largely because they share content with the GS papers.

Which Optional Should You Pick? A Data-Driven Comparison

Instead of chasing “scoring” trends, match the optional to your background and its overlap with GS — that overlap is free revision time. The table below is a decision aid, not a ranking.

Hindi-medium aspirants can find parallel resources such as the Rajesh Mishra PSIR Notes (Hindi), so language is rarely a barrier to a strong optional.

Prelims-to-Mains Overlap Map: One Topic, Multiple Papers

A gap most syllabus pages miss: the CSE syllabus is deliberately integrated, so a single topic feeds several papers. Studying with this map in mind saves months of duplicated effort.

This is why continuous current affairs preparation — through a monthly source like the Vision IAS Current Affairs Magazine — pays off across every stage rather than for Prelims alone.

Subject-Wise Syllabus → PYQ → Material: A Printable Tracker

Reading the syllabus is not the same as covering it. Use this tick-box tracker to convert each subject into three actions: study the concept, solve previous-year questions (PYQs), and revise. Print it and mark each box as you finish a round.

The middle column — PYQs — is where the syllabus meets the exam. A topic-wise question bank such as the Forum IAS Prelims Toolkit (PYQ 1992–2025) shows exactly how UPSC has framed each syllabus line historically, and a full-length Vision IAS Prelims Test Series turns that awareness into exam temperament.

Has the UPSC Syllabus Ever Changed?

Aspirants often ask whether the “2026” or “2027” syllabus is materially different from earlier years. The honest answer: the core UPSC syllabus has been remarkably stable. The current structure of GS papers and the optional-with-two-papers format was introduced in the 2013 reform, when the Commission reduced optionals from two to one and added the four-GS-paper Mains format. Since then, only the emphasis has shifted — not the syllabus text itself.

So when a page relabels the syllabus “2026” or “2027,” the topic list is essentially the same one notified over a decade ago. What changes annually is the exam calendar, current-affairs load and the analytical depth of questions — which is why up-to-date notes and test series matter more than a “new” syllabus.

How Long Does It Take to Complete the UPSC Syllabus?

For a first-time aspirant starting from scratch, covering the full UPSC syllabus for Prelims and Mains once typically takes 12 to 15 months of focused, consistent study (roughly 8–10 hours a day), followed by multiple revision cycles. Working professionals usually plan for 18–24 months. The timeline below is a realistic template.

A complete printed GS set such as the Vision IAS complete GS notes (Prelims + Mains) compresses the foundation phase by giving you syllabus-mapped material instead of assembling it from dozens of sources.

Download UPSC Syllabus PDF (English & Hindi)

The official upsc syllabus pdf download is available inside the UPSC Civil Services Examination notification released on upsc.gov.in every February. The notification carries the complete Prelims and Mains syllabus, including every optional subject, and remains valid for that year’s cycle. Aspirants can download the syllabus PDF in both English and Hindi directly from the notification.

If you prefer a compact, exam-ready printed syllabus booklet rather than a raw PDF, the GS Score Latest Syllabus Booklet 2026–27 presents the entire CSE syllabus in a clean, revision-friendly format you can annotate. Hindi-medium aspirants can pair it with the Hindi-medium current affairs magazine to keep the dynamic portion updated.

Common Mistakes While Reading the UPSC Syllabus

Even serious aspirants misread the syllabus in predictable ways. Avoid these:

• Treating Prelims and Mains separately: The syllabi overlap heavily — study once, apply to both stages.
• Ignoring CSAT: A sub-33% CSAT score cancels an excellent GS score. Practise it from day one.
• Choosing the optional late: The optional is 500 marks — decide early so it grows alongside GS.
• Reading the syllabus once: Keep the syllabus open beside you; every topic you study should map to a specific line.
• Skipping PYQ mapping: Without previous-year questions, you cannot judge the depth UPSC expects for each topic.

Frequently Asked Questions

What is the syllabus of UPSC?

The UPSC syllabus for the Civil Services Examination has three stages: Prelims (GS Paper I of 200 marks and CSAT Paper II of 200 marks), Mains (Essay, four General Studies papers, one optional subject with two papers, and two qualifying language papers — 1750 counted marks), and a 275-mark Personality Test. It spans history, polity, geography, economy, environment, science, ethics and current affairs.

Is the UPSC syllabus the same for Prelims and Mains?

No, but they overlap heavily. Prelims is objective and tests broad factual awareness across GS and aptitude, while Mains is descriptive and demands analytical, structured answers on largely the same subjects plus ethics and an optional. Many topics — polity, economy, environment, current affairs — appear in both stages, so integrated study is efficient.

How many optional subjects are there in UPSC?

There are 48 optional subjects in the UPSC optional subjects list — 25 core subjects plus the literature of 23 languages. You choose only one optional, which has two papers of 250 marks each (500 marks total). You can pick any subject regardless of your graduation background.

What is the CSAT qualifying mark in UPSC Prelims?

You must score at least 33% in CSAT Paper II — that is 66.67 marks out of 200. CSAT is qualifying only; if you score below 33%, your GS Paper I is not evaluated and you do not clear Prelims, regardless of your GS score.

Are Prelims marks counted in the final UPSC merit list?

No. Prelims is purely a screening stage. Its marks are used only to decide who qualifies for Mains and are then discarded. The final merit is based solely on the Mains written examination (1750 marks) plus the Personality Test (275 marks), a total of 2025 marks.

How many papers are there in UPSC Mains?

UPSC Mains has nine papers: two qualifying language papers (Paper A and Paper B), the Essay, four General Studies papers (GS-I to GS-IV), and two optional-subject papers. Seven of these — Essay, four GS papers and two optional papers — count toward merit, totalling 1750 marks.

Can I download the UPSC syllabus PDF in Hindi?

Yes. The official UPSC Civil Services notification on upsc.gov.in is bilingual, so the complete Prelims and Mains syllabus, including all optional subjects, is available as a PDF in both English and Hindi. For a printed, annotate-ready version, aspirants also use compact syllabus booklets available on Competer.

How long does it take to complete the UPSC syllabus?

A first-time aspirant starting from scratch usually needs about 12 to 15 months of focused study (roughly 8–10 hours a day) to cover the full Prelims and Mains syllabus once, plus repeated revision cycles. Working professionals typically plan for 18–24 months, using a foundation → integration → Prelims → Mains phased schedule.

Is there negative marking in the UPSC Prelims syllabus papers?

Yes. Both Prelims papers carry negative marking of one-third of the marks for each wrong answer. In GS Paper I (100 questions) and CSAT Paper II (80 questions), a wrong MCQ deducts one-third of that question’s marks. The exception is the CSAT decision-making questions, which carry no negative marking.

Which optional subject is best for the UPSC Mains syllabus?

There is no single “best” optional — the right choice depends on your background, interest and comfort with the syllabus. High-overlap optionals such as PSIR, Sociology, Public Administration, Geography and Anthropology are popular because they share content with the GS papers, reducing duplicate effort. Match the optional to your strengths and available study material rather than to a scoring trend.

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