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The UPSC Civil Services Preliminary Examination is the first and most crucial stage of the three-stage selection process conducted by the Union Public Service Commission to recruit officers for prestigious services such as the Indian Administrative Service (IAS), Indian Police Service (IPS), Indian Foreign Service (IFS), and approximately 24 other Group A and Group B Central Services. Every year, over 13 lakh candidates register for the exam, making it one of the most competitive examinations in the world. Understanding every dimension of this examination, from its structure and syllabus to its cutoff trends and preparation methodology, is the foundation of any serious preparation plan.
This guide consolidates all essential information about UPSC CSE Prelims under one page to help aspirants navigate the examination confidently without information gaps.
The UPSC CSE Prelims is a screening test and not a merit-determining stage. The marks secured in Prelims are not carried forward to the final merit list. Its sole purpose is to shortlist candidates for the UPSC Mains examination. The exam is conducted annually, typically in May or June, as a single-day, objective-type examination consisting of two papers held in two separate sessions.
| Feature Details | |
| Conducting Body | Union Public Service Commission (UPSC) |
| Exam Type | Objective (MCQ) |
| Number of Papers | 2 (GS Paper 1 and CSAT Paper 2) |
| Total Marks | 400 (200 per paper) |
| Duration | 2 hours per paper |
| Negative Marking | 1/3rd of marks for each wrong answer |
| Nature of GS Paper 1 | Merit-determining (for Prelims qualification) |
| Nature of CSAT (Paper 2) | Qualifying (minimum 33% required) |
| Mode | Offline (OMR-based pen and paper) |
| Language | Bilingual (Hindi and English) |
Candidates who secure marks equal to or above the official cutoff in GS Paper 1 and at least 66 out of 200 marks (33%) in CSAT are declared qualified for the UPSC Mains examination.
UPSC releases an annual examination calendar well in advance. The following schedule reflects the typical pattern and the 2026 cycle based on official information.
| Event Tentative Date | |
| Official Notification Release | February 2026 |
| Application Window Opens | February 2026 |
| Last Date to Apply | March 2026 |
| Admit Card Release | Approximately 3 weeks before exam |
| Prelims Examination | May / June 2026 |
| Prelims Result | July / August 2026 |
| Mains Examination | September 2026 |
Aspirants should always verify dates from the official UPSC website at upsc.gov.in, as dates are subject to change based on administrative requirements.
For official notifications and updates, check the UPSC CSE Notification page.
The Prelims syllabus covers two broad areas:
GS Paper 1 tests a candidate's awareness and analytical understanding across History, Geography, Polity, Economy, Environment, Science and Technology, and Current Affairs.
GS Paper 2 (CSAT) tests aptitude skills including Comprehension, Logical Reasoning, Analytical Ability, Decision-Making, General Mental Ability, and Basic Numeracy.
For the complete topic-wise breakdown including subject-wise weightage analysis, visit the dedicated UPSC CSE Prelims Syllabus page.
You can also track your syllabus coverage using the Syllabus Tracker for UPSC CSE available on Aspirant Mitraa.
| Subject Approximate Weightage (Historical Trend) | |
| History and Indian National Movement | 15-20 questions |
| Geography (India and World) | 12-18 questions |
| Indian Polity and Governance | 10-15 questions |
| Economy and Social Development | 10-15 questions |
| Environment and Ecology | 10-15 questions |
| Science and Technology | 8-12 questions |
| Current Affairs (National and International) | 15-25 questions |
Note: Weightage varies each year. The total GS Paper 1 has 100 questions worth 200 marks (2 marks per question).
| Topic Details | |
| Reading Comprehension | Unseen passages with analytical questions |
| Logical Reasoning | Syllogisms, analogies, series, coding-decoding |
| Analytical Ability | Data interpretation, logical deduction |
| Basic Numeracy | Class 10-level arithmetic, percentages, ratios |
| Decision-Making | Situation-based judgment questions |
| General Mental Ability | Spatial reasoning, mental models |
CSAT has 80 questions worth 200 marks (2.5 marks per question). The qualifying mark is 66 out of 200.
Before beginning preparation, every aspirant must verify they meet the eligibility conditions for UPSC CSE.
For IAS and IPS services, the candidate must be a citizen of India. For other services, candidates from Nepal, Bhutan, and certain other specified categories are also eligible under conditions specified in the official notification.
| Category Minimum Age Maximum Age | ||
| General / EWS | 21 years | 32 years |
| OBC | 21 years | 35 years |
| SC / ST | 21 years | 37 years |
| PwBD (General / EWS) | 21 years | 42 years |
| PwBD (OBC) | 21 years | 45 years |
| PwBD (SC / ST) | 21 years | 47 years |
| Ex-Servicemen (General) | 21 years | 37 years |
Age is calculated as on 1st August of the examination year.
A candidate must hold a Bachelor's degree from a recognised university. The degree can be in any discipline - Arts, Science, Commerce, Engineering, Law, or Medicine. There is no minimum percentage requirement. Candidates in the final year of their undergraduate program can also apply for Prelims, but must produce their degree certificate before the Mains application.
| Category Maximum Attempts | |
| General / EWS | 6 |
| OBC | 9 |
| SC / ST | Unlimited (within age limit) |
| PwBD (General / EWS) | 9 |
| PwBD (SC / ST) | Unlimited (within age limit) |
An attempt is counted the moment a candidate appears in at least one paper of the Preliminary Examination. Submitting the application form without appearing does not count as an attempt.
For detailed eligibility information including special provisions and nationality conditions, visit the UPSC CSE Eligibility Criteria page.
The UPSC Prelims application is entirely online through the official portal upsconline.nic.in. The process involves One-Time Registration (OTR) and a two-part application form. Application fees are Rs. 100 for General and OBC male candidates. Women candidates and SC/ST/PwBD candidates are exempt from fees.
For step-by-step instructions on filling the form, uploading documents, selecting exam centres, and completing payment, see the UPSC CSE Application Process page.
| Parameter Detail | |
| Total Questions | 100 |
| Total Marks | 200 |
| Marks per Question | 2 |
| Negative Marking | -0.66 (1/3 of 2 marks) |
| Duration | 2 hours (9:30 AM to 11:30 AM) |
| Nature | Merit-determining |
| Parameter Detail | |
| Total Questions | 80 |
| Total Marks | 200 |
| Marks per Question | 2.5 |
| Negative Marking | -0.83 (1/3 of 2.5 marks) |
| Duration | 2 hours (2:30 PM to 4:30 PM) |
| Nature | Qualifying (33% minimum) |
Both papers are conducted on the same day at designated examination centres across India. The question paper is bilingual (Hindi and English).
The UPSC Prelims cutoff is based exclusively on GS Paper 1 scores. The CSAT cutoff remains fixed at 33% (66 out of 200) for all categories. Official cutoff marks are released only after the final result of the examination cycle.
| Year General EWS OBC SC ST | |||||
| 2024 | 87.98 | 85.92 | 87.28 | 79.03 | 74.23 |
| 2023 | 75.41 | 72.89 | 74.75 | 63.08 | 57.63 |
| 2022 | 88.22 | 86.13 | 86.14 | 73.48 | 69.67 |
| 2021 | 87.54 | 84.57 | 84.74 | 74.15 | 65.75 |
| 2020 | 92.51 | 90.00 | 90.57 | 78.28 | 72.04 |
Source: Official UPSC cutoff PDFs released post final results.
The 2023 cutoff marked a historic low across all categories, primarily because of an unusually difficult GS Paper and a challenging CSAT paper. The 2024 cycle saw a sharp recovery with the General category cutoff jumping to 87.98. This volatility underlines the importance of scoring well above the expected cutoff to account for paper difficulty uncertainty.
For year-wise and category-wise cutoff trend analysis along with preparation benchmarks, visit the UPSC CSE Prelims Cutoff page.
Solving Previous Year Questions is the single most effective method for understanding the UPSC examination pattern. PYQs reveal the depth of questions asked, the preferred topics of the Commission, the level of application versus recall required, and the type of distractors used in options.
Aspirant Mitraa provides a comprehensive PYQ repository for UPSC CSE Prelims covering:
Subject-wise PYQs are also available for targeted practice:
| Subject Link | |
| Current Affairs | PYQs |
| Economy | PYQs |
| Environment and Ecology | PYQs |
| Geography | PYQs |
| History | PYQs |
| Indian Polity and Governance | PYQs |
| Quantitative Aptitude | PYQs |
| Reading Comprehension | PYQs |
| Reasoning and Logical Ability | PYQs |
| Science and Technology | PYQs |
Every question in the PYQ section on Aspirant Mitraa comes with the correct answer, a detailed explanation, reasoning for why other options are incorrect, and key concepts connected to that question.
Practice without analysis is preparation without direction. The UPSC CSE Prelims Test Series on Aspirant Mitraa is designed to simulate the actual examination environment while building conceptual depth.
| Feature Details | |
| Total Tests | 400 |
| Topic-wise Tests | Cover individual topics within each subject |
| Subject-wise Tests | Cover complete subjects at one go |
| Full-length Mock Tests | Simulate the actual Prelims with both GS Paper 1 and CSAT |
| Difficulty Progression | Starts with foundational questions, advances to UPSC-level difficulty |
| Answer Explanations | Detailed solution with concept notes for each question |
| Performance Analytics | Track accuracy, time management, and weak areas |
The 400-test package is among the most comprehensive available for UPSC Prelims preparation. With topic-wise tests, aspirants can strengthen individual areas before attempting subject-wise and full-length mock tests. This layered approach mirrors the preparation methodology followed by consistent qualifiers.
A structured, time-bound, and revision-heavy approach is the hallmark of every successful Prelims attempt. The following framework has been validated across multiple toppers' strategies.
The first phase involves building conceptual clarity across all GS subjects. The recommended standard texts are:
After completing the standard texts, every aspirant should solve at least 10 to 15 years of previous year questions subject-wise. This reveals which subtopics within each subject are repeatedly tested by the Commission. Use the subject-wise PYQ links on Aspirant Mitraa for focused practice.
Begin attempting full-length mock tests from the UPSC CSE Prelims Test Series. Aim for at least 2 to 3 full-length mocks per week alongside revision of standard sources. Maintain an error log for incorrect answers and revisit those concepts within 48 hours.
Current Affairs contribute 15 to 25 questions in GS Paper 1. A disciplined reading of one national newspaper (The Hindu or Indian Express), monthly PIB summaries, and government reports (Economic Survey, Union Budget, and key Ministry reports) should be maintained throughout the preparation period.
Many aspirants with strong GS knowledge are eliminated by underperforming in CSAT. While CSAT is only qualifying at 33%, candidates should not treat it as a guaranteed pass. A dedicated 30 to 45 minutes of daily CSAT practice focusing on Reading Comprehension and Mathematical Reasoning can comfortably ensure a score above 80 marks, providing a comfortable buffer.
Understanding exam-day protocols prevents last-minute confusion and helps maintain composure.
Key points aspirants must remember:
For a comprehensive exam-day checklist including centre-specific instructions and post-exam steps, visit the UPSC CSE Exam Day Guidance page.
Post-exam analysis of UPSC Prelims provides critical intelligence for candidates preparing for the next cycle. Each year, the subject-wise question distribution, difficulty level, and question type (static versus current affairs) shift slightly.
Key observations from recent cycles:
For a year-wise paper analysis with section-wise breakdowns, visit the UPSC CSE Prelims Exam Analysis page.
The UPSC Prelims result is typically declared 6 to 8 weeks after the examination. The result is published on the official UPSC website as a PDF containing roll numbers of qualified candidates. The Commission does not release individual scores at the Prelims stage. Official cutoff marks are released only after the final result of the entire examination cycle.
After the Prelims result, qualified candidates are required to fill in the Detailed Application Form (DAF-1) and register for the UPSC Mains examination.
For result-related details including how to check the result and what to do after qualification, visit the UPSC CSE Prelims Result page.
| Page Link | |
| Syllabus (GS Paper 1 and CSAT) | View Syllabus |
| Eligibility Criteria | Check Eligibility |
| Application Process | How to Apply |
| Cutoff Marks (All Years) | View Cutoffs |
| Previous Year Questions | Attempt PYQs |
| Test Series (400 Tests) | Start Practicing |
| Official Notification | Read Notification |
| Exam Analysis | Read Analysis |
| Exam Day Guidance | Preparation Checklist |
| FAQ | Common Questions |
| Result | Check Result |
| Syllabus Tracker | Track Progress |
Is CSAT qualifying or merit-based? CSAT (GS Paper 2) is qualifying in nature. Candidates must score a minimum of 33% (66 out of 200) to be eligible for Prelims qualification. Marks from CSAT are not included in the merit calculation.
Can final-year students apply? Yes. Candidates in the final year of their undergraduate degree can appear for the Prelims. However, they must submit proof of graduation before applying for the Mains examination.
How many candidates qualify for Mains from Prelims? UPSC typically shortlists approximately 12 to 13 times the total advertised vacancies for the Mains stage. Based on recent trends, around 14,000 to 15,000 candidates qualify from the Prelims stage.
Is there sectional cutoff in GS Paper 1? No. There is no sectional cutoff in GS Paper 1. The overall marks across all 100 questions determine whether a candidate clears the Prelims cutoff.
Is coaching mandatory for UPSC Prelims? Coaching is not mandatory. Thousands of candidates clear the Prelims annually through self-study using standard reference books, quality PYQs, and structured mock tests available on platforms like Aspirant Mitraa.
For more questions and official clarifications, visit the UPSC CSE Prelims FAQ page.
The UPSC Civil Services Preliminary Examination demands consistency, conceptual clarity, and a disciplined revision strategy. The gap between those who qualify and those who fall short is rarely about intelligence. It is almost always about structured practice, regular assessment through mock tests, and staying aligned with the evolving nature of the exam. Use the resources on Aspirant Mitraa to build that structured approach and track every step of your progress.